diff --git a/.gitignore b/.gitignore
index e1ca220d..2b85245d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,3 +38,4 @@
 /doc
 /.yardoc
 
+.DS_Store
diff --git a/Gemfile.lock b/Gemfile.lock
index 8a4f1758..83aba0ed 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -125,7 +125,7 @@ GEM
     parliament-grom-decorators (0.31.1)
     parliament-ntriple (0.4.0)
       grom (~> 1.0)
-    parliament-opensearch (0.6.0)
+    parliament-opensearch (0.7.0)
       activesupport (>= 5.0.0.1)
       feedjira (~> 2.1, >= 2.1.2)
     parliament-routes (0.6.13)
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 7798f7a3..b0fb58e0 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -9,7 +9,7 @@ class ApplicationController < ActionController::API
 
   attr_reader :app_insights_request_id
 
-  before_action :populate_request_id, :reset_alternates
+  before_action :reset_alternates
 
   # Prevent CSRF attacks by raising an exception.
   # For APIs, you may want to use :null_session instead.
@@ -35,7 +35,7 @@ def render_page(serializer, response_parameter = response)
     render json: serializer.to_h
   end
 
-  def populate_request_id
-    @app_insights_request_id = request.env['ApplicationInsights.request.id']
+  def default_url_options
+    { port: nil, protocol: 'https' }
   end
 end
diff --git a/app/controllers/concerns/application_helper.rb b/app/controllers/concerns/application_helper.rb
index 5b20a4ce..f81b019f 100644
--- a/app/controllers/concerns/application_helper.rb
+++ b/app/controllers/concerns/application_helper.rb
@@ -78,11 +78,11 @@ def data_url
     self.class::ROUTE_MAP[params[:action].to_sym] || raise(StandardError, "You must provide a ROUTE_MAP proc for #{params[:controller]}##{params[:action]}")
   end
 
-  # Populates @request with a data url which can be used within controllers.
+  # Populates @api_request with a data url which can be used within controllers.
   def build_request
-    @request = data_url.call(params)
+    @api_request = data_url.call(params)
 
-    populate_alternates(@request.query_url)
+    populate_alternates(@api_request.query_url)
   end
 
   # Populates @alternates with a list of data formats and corresponding urls
diff --git a/app/controllers/groups_controller.rb b/app/controllers/groups_controller.rb
index bde48961..bb245d7e 100644
--- a/app/controllers/groups_controller.rb
+++ b/app/controllers/groups_controller.rb
@@ -8,7 +8,7 @@ class GroupsController < ApplicationController
   }.freeze
 
   def index
-    @groups = FilterHelper.filter(@request, 'Group')
+    @groups = FilterHelper.filter(@api_request, 'Group')
 
     list_components = @groups.map do |group|
       paragraph_content = [].tap do |content|
@@ -22,16 +22,16 @@ def index
       ).build_card
     end
 
-    serializer = PageSerializer::ListPageSerializer.new(page_title: 'groups.index.title', list_components: list_components, request_id: app_insights_request_id, data_alternates: @alternates, request_original_url: request.original_url)
+    serializer = PageSerializer::ListPageSerializer.new(request: request, page_title: 'groups.index.title', list_components: list_components, data_alternates: @alternates)
 
     render_page(serializer)
   end
 
   def show
-    @group = FilterHelper.filter(@request, 'Group')
+    @group = FilterHelper.filter(@api_request, 'Group')
     @group = @group.first
 
-    serializer = PageSerializer::GroupsShowPageSerializer.new(group: @group, request_id: app_insights_request_id, data_alternates: @alternates, request_original_url: request.original_url)
+    serializer = PageSerializer::GroupsShowPageSerializer.new(request: request, group: @group, data_alternates: @alternates)
 
     render_page(serializer)
   end
diff --git a/app/controllers/home_controller.rb b/app/controllers/home_controller.rb
index d29b7bc5..37cd019a 100644
--- a/app/controllers/home_controller.rb
+++ b/app/controllers/home_controller.rb
@@ -1,6 +1,6 @@
 class HomeController < ApplicationController
   # This controller renders the home page serializer. It does not currently query the data base.
   def index
-    render_page(PageSerializer::HomePageSerializer.new(request_id: app_insights_request_id, request_original_url: request.original_url))
+    render_page(PageSerializer::HomePageSerializer.new(request: request))
   end
 end
diff --git a/app/controllers/proposed_negative_statutory_instruments_controller.rb b/app/controllers/proposed_negative_statutory_instruments_controller.rb
index 6ff51f6e..74c1e689 100644
--- a/app/controllers/proposed_negative_statutory_instruments_controller.rb
+++ b/app/controllers/proposed_negative_statutory_instruments_controller.rb
@@ -8,7 +8,7 @@ class ProposedNegativeStatutoryInstrumentsController < ApplicationController
   }.freeze
 
   def index
-    @proposed_negative_statutory_instruments = FilterHelper.filter(@request, 'ProposedNegativeStatutoryInstrumentPaper')
+    @proposed_negative_statutory_instruments = FilterHelper.filter(@api_request, 'ProposedNegativeStatutoryInstrumentPaper')
 
     list_components = @proposed_negative_statutory_instruments.map do |proposed_negative_statutory_instrument|
       CardFactory.new(
@@ -17,16 +17,16 @@ def index
       ).build_card
     end
 
-    serializer = PageSerializer::ListPageSerializer.new(page_title: 'proposed-negative-statutory-instruments.index.title', list_components: list_components, request_id: app_insights_request_id, data_alternates: @alternates, request_original_url: request.original_url)
+    serializer = PageSerializer::ListPageSerializer.new(request: request, page_title: 'proposed-negative-statutory-instruments.index.title', list_components: list_components, data_alternates: @alternates)
 
     render_page(serializer)
   end
 
   def show
-    @proposed_negative_statutory_instrument = FilterHelper.filter(@request, 'ProposedNegativeStatutoryInstrumentPaper')
+    @proposed_negative_statutory_instrument = FilterHelper.filter(@api_request, 'ProposedNegativeStatutoryInstrumentPaper')
     @proposed_negative_statutory_instrument = @proposed_negative_statutory_instrument.first
 
-    serializer = PageSerializer::ProposedNegativeStatutoryInstrumentsShowPageSerializer.new(proposed_negative_statutory_instrument: @proposed_negative_statutory_instrument, request_id: app_insights_request_id, data_alternates: @alternates, request_original_url: request.original_url)
+    serializer = PageSerializer::ProposedNegativeStatutoryInstrumentsShowPageSerializer.new(request: request, proposed_negative_statutory_instrument: @proposed_negative_statutory_instrument, data_alternates: @alternates)
 
     render_page(serializer)
   end
diff --git a/app/controllers/search_controller.rb b/app/controllers/search_controller.rb
index 80759066..ac460fe3 100644
--- a/app/controllers/search_controller.rb
+++ b/app/controllers/search_controller.rb
@@ -1,17 +1,17 @@
 class SearchController < ApplicationController
   def index
     # Show the index page if there is no query or an empty string is passed
-    return render_page(PageSerializer::SearchPage::LandingPageSerializer.new(opensearch_description_url: opensearch_description_url, flash_message: search_service.flash_message, request_id: app_insights_request_id, request_original_url: request.original_url)) unless search_service.sanitised_query.present?
+    return render_page(PageSerializer::SearchPage::LandingPageSerializer.new(request: request, flash_message: search_service.flash_message)) unless search_service.sanitised_query.present?
 
     search_service.fetch_description
 
     begin
-      serialiser = PageSerializer::SearchPage::ResultsPageSerializer.new(opensearch_description_url: opensearch_description_url, query: search_service.sanitised_query, results: search_service.results, pagination_hash: search_service.pagination_hash, request_id: app_insights_request_id, request_original_url: request.original_url)
+      serialiser = PageSerializer::SearchPage::ResultsPageSerializer.new(request: request, query: search_service.sanitised_query, results: search_service.results, pagination_hash: search_service.pagination_hash)
 
       return render_page(serialiser)
     rescue Parliament::ServerError => e
       logger.warn "Server error caught from search request: #{e.message}"
-      serialiser = PageSerializer::SearchPage::ResultsPageSerializer.new(opensearch_description_url: opensearch_description_url, query: search_service.sanitised_query, request_id: app_insights_request_id, request_original_url: request.original_url)
+      serialiser = PageSerializer::SearchPage::ResultsPageSerializer.new(request: request, query: search_service.sanitised_query)
 
       return render_page(serialiser)
     end
@@ -34,6 +34,6 @@ def opensearch
   private
 
   def search_service
-    @search_service ||= SearchService.new(app_insights_request_id, search_path, params)
+    @search_service ||= SearchService.new(request.env['ApplicationInsights.request.id'], search_path, params)
   end
 end
diff --git a/app/controllers/statutory_instruments_controller.rb b/app/controllers/statutory_instruments_controller.rb
index e6cca83d..5df1ee42 100644
--- a/app/controllers/statutory_instruments_controller.rb
+++ b/app/controllers/statutory_instruments_controller.rb
@@ -8,7 +8,7 @@ class StatutoryInstrumentsController < ApplicationController
   }.freeze
 
   def index
-    @statutory_instruments = FilterHelper.filter(@request, 'StatutoryInstrumentPaper')
+    @statutory_instruments = FilterHelper.filter(@api_request, 'StatutoryInstrumentPaper')
 
     list_components = @statutory_instruments.map do |statutory_instrument|
       CardFactory.new(
@@ -17,16 +17,16 @@ def index
       ).build_card
     end
 
-    serializer = PageSerializer::ListPageSerializer.new(page_title: 'statutory-instruments.index.title', list_components: list_components, request_id: app_insights_request_id, data_alternates: @alternates, request_original_url: request.original_url)
+    serializer = PageSerializer::ListPageSerializer.new(request: request, page_title: 'statutory-instruments.index.title', list_components: list_components, data_alternates: @alternates)
 
     render_page(serializer)
   end
 
   def show
-    @statutory_instrument = FilterHelper.filter(@request, 'StatutoryInstrumentPaper')
+    @statutory_instrument = FilterHelper.filter(@api_request, 'StatutoryInstrumentPaper')
     @statutory_instrument = @statutory_instrument.first
 
-    serializer = PageSerializer::StatutoryInstrumentsShowPageSerializer.new(statutory_instrument: @statutory_instrument, request_id: app_insights_request_id, data_alternates: @alternates, request_original_url: request.original_url)
+    serializer = PageSerializer::StatutoryInstrumentsShowPageSerializer.new(request: request, statutory_instrument: @statutory_instrument, data_alternates: @alternates)
 
     render_page(serializer)
   end
diff --git a/app/serializers/page_serializer/base_page_serializer.rb b/app/serializers/page_serializer/base_page_serializer.rb
index a289170d..310c92e1 100644
--- a/app/serializers/page_serializer/base_page_serializer.rb
+++ b/app/serializers/page_serializer/base_page_serializer.rb
@@ -1,12 +1,16 @@
 module PageSerializer
   class BasePageSerializer < BaseSerializer
     include OpenGraphHelper
-    attr_reader :request_id, :data_alternates
+    attr_reader :request, :request_id, :data_alternates, :request_original_url
+    include ActionDispatch::Routing::UrlFor
 
-    def initialize(request_id: nil, data_alternates: nil, request_original_url: nil)
-      @request_id           = request_id if request_id
+    # @param [ActionDispatch::Request] request the current request object.
+    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls.
+    def initialize(request: nil, data_alternates: nil)
+      @request              = request
+      @request_id           = request.try(:env)&.fetch('ApplicationInsights.request.id', nil) if request
       @data_alternates      = data_alternates
-      @request_original_url = request_original_url
+      @request_original_url = generate_original_url
     end
 
     # Creates a hash of the serializer's content
@@ -54,19 +58,31 @@ def footer_section(hash)
       end
     end
 
-    def opensearch_description_url
-      raise 'You must implement #opensearch_description_url'
-    end
-
     def meta(title: nil, image_id: nil)
       {}.tap do |meta|
         meta[:title]           = title
-        meta[:request_id]      = @request_id if @request_id
-        meta[:data_alternates] = @data_alternates
-        meta[:open_graph]      = OpenGraphHelper.information(page_title: title, request_original_url: @request_original_url, image_id: image_id)
+        meta[:request_id]      = request_id if request_id
+        meta[:data_alternates] = data_alternates if data_alternates
+
+        meta[:open_graph]      = OpenGraphHelper.information(page_title: title, request_original_url: request_original_url, image_id: image_id)
+
+        meta[:opensearch_description_url] = url_for(host: request.try(:host), protocol: 'https', port: nil, controller: 'search', action: 'opensearch') if request.try(:host)
       end
     end
 
+    def generate_original_url
+      begin
+        uri_object = URI.parse(request.try(:original_url))
+      rescue URI::InvalidURIError
+        return nil
+      end
+
+      uri_object.port = nil
+      uri_object.scheme = 'https'
+
+      uri_object.to_s
+    end
+
     # Sets the default for including global search in the header to true.
     def include_global_search
       true
diff --git a/app/serializers/page_serializer/groups_show_page_serializer.rb b/app/serializers/page_serializer/groups_show_page_serializer.rb
index bafe9c0d..6227d83a 100644
--- a/app/serializers/page_serializer/groups_show_page_serializer.rb
+++ b/app/serializers/page_serializer/groups_show_page_serializer.rb
@@ -2,14 +2,13 @@ module PageSerializer
   class GroupsShowPageSerializer < PageSerializer::BasePageSerializer
     # Initialise a Groups show page serializer.
     #
+    # @param [ActionDispatch::Request] request the current request object.
     # @param [<Grom::Node>] group a Grom::Node object of type StatutoryInstrumentPaper.
-    # @param [String] request_id AppInsights request id
-    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls
-    # @param [String] request_original_url original url of the request
-    def initialize(group: nil, request_id: nil, data_alternates: nil, request_original_url: nil)
+    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls.
+    def initialize(request: nil, group: nil, data_alternates: nil)
       @group = group
 
-      super(request_id: request_id, data_alternates: data_alternates, request_original_url: request_original_url)
+      super(request: request, data_alternates: data_alternates)
     end
 
     private
diff --git a/app/serializers/page_serializer/home_page_serializer.rb b/app/serializers/page_serializer/home_page_serializer.rb
index a6025116..9603ae51 100644
--- a/app/serializers/page_serializer/home_page_serializer.rb
+++ b/app/serializers/page_serializer/home_page_serializer.rb
@@ -1,19 +1,7 @@
 module PageSerializer
   class HomePageSerializer < PageSerializer::BasePageSerializer
-    # This serializer includes HousesHelper
-    # Initialise a Home index page serializer.
-    #
-    # @param [String] opensearch_description_url a description url for the search.
-    def initialize(opensearch_description_url: nil, request_id: nil, request_original_url: nil)
-      @opensearch_description_url = opensearch_description_url
-
-      super(request_id: request_id, request_original_url: request_original_url)
-    end
-
     private
 
-    attr_reader :opensearch_description_url
-
     def meta
       super(title: 'beta.parliament.uk')
     end
diff --git a/app/serializers/page_serializer/laid_thing_show_page_serializer.rb b/app/serializers/page_serializer/laid_thing_show_page_serializer.rb
index 1a0c16bf..33136804 100644
--- a/app/serializers/page_serializer/laid_thing_show_page_serializer.rb
+++ b/app/serializers/page_serializer/laid_thing_show_page_serializer.rb
@@ -2,18 +2,17 @@ module PageSerializer
   class LaidThingShowPageSerializer < PageSerializer::BasePageSerializer
     # Initialise a Laid Thing show page serializer.
     #
+    # @param [ActionDispatch::Request] request the current request object.
     # @param [<Grom::Node>] laid_thing a Grom::Node object of type LaidThing.
-    # @param [String] request_id AppInsights request id
-    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls
-    # @param [String] request_original_url original url of the request
-    def initialize(laid_thing:, request_id: nil, data_alternates: nil, request_original_url: nil)
+    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls.
+    def initialize(request: nil, laid_thing:, data_alternates: nil)
       @laid_thing    = laid_thing
       @work_package  = @laid_thing.work_package
       @laying_body   = @laid_thing&.laying&.body
       @laying_person = @laid_thing&.laying&.person
       @procedure     = @work_package&.procedure
 
-      super(request_id: request_id, data_alternates: data_alternates, request_original_url: request_original_url)
+      super(request: request, data_alternates: data_alternates)
     end
 
     private
diff --git a/app/serializers/page_serializer/list_page_serializer.rb b/app/serializers/page_serializer/list_page_serializer.rb
index 0e25dc48..6087da00 100644
--- a/app/serializers/page_serializer/list_page_serializer.rb
+++ b/app/serializers/page_serializer/list_page_serializer.rb
@@ -2,17 +2,16 @@ module PageSerializer
   class ListPageSerializer < PageSerializer::BasePageSerializer
     # Initialise a list page serializer.
     #
+    # @param [ActionDispatch::Request] request the current request object
     # @param [String] page_title title of the page
     # @param [Array<Hash>] list_components an array of components to be passed into the list
-    # @param [String] request_id AppInsights request id
-    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls
-    # @param [String] request_original_url original url of the request
-    def initialize(page_title: nil, list_components: nil, request_id: nil, data_alternates: nil, request_original_url: nil)
+    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data url
+    def initialize(request: nil, page_title: nil, list_components: nil, data_alternates: nil)
       @page_title = page_title
       @list_components = list_components
       @data_alternates = data_alternates
 
-      super(request_id: request_id, data_alternates: data_alternates, request_original_url: request_original_url)
+      super(request: request, data_alternates: data_alternates)
     end
 
     private
diff --git a/app/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer.rb b/app/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer.rb
index f2d216e4..f11874fc 100644
--- a/app/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer.rb
+++ b/app/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer.rb
@@ -2,15 +2,14 @@ module PageSerializer
   class ProposedNegativeStatutoryInstrumentsShowPageSerializer < LaidThingShowPageSerializer
     # Initialise a Proposed Negative Statutory Instruments show page serializer.
     #
+    # @param [ActionDispatch::Request] request the current request object.
     # @param [<Grom::Node>] proposed_negative_statutory_instrument a Grom::Node object of type ProposedNegativeStatutoryInstrumentPaper.
-    # @param [String] request_id AppInsights request id
     # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls
-    # @param [String] request_original_url original url of the request
-    def initialize(proposed_negative_statutory_instrument:, request_id: nil, data_alternates: nil, request_original_url: nil)
+    def initialize(request: nil, proposed_negative_statutory_instrument:, data_alternates: nil)
       @proposed_negative_statutory_instrument = proposed_negative_statutory_instrument
       @following_statutory_instruments        = @proposed_negative_statutory_instrument.statutory_instrument_papers
 
-      super(laid_thing: @proposed_negative_statutory_instrument, request_id: request_id, data_alternates: data_alternates, request_original_url: request_original_url)
+      super(request: request, laid_thing: @proposed_negative_statutory_instrument, data_alternates: data_alternates)
     end
 
     private
diff --git a/app/serializers/page_serializer/search_page.rb b/app/serializers/page_serializer/search_page.rb
index 8740a1c3..bf859b0c 100644
--- a/app/serializers/page_serializer/search_page.rb
+++ b/app/serializers/page_serializer/search_page.rb
@@ -2,21 +2,20 @@ module PageSerializer
   class SearchPage < PageSerializer::BasePageSerializer
     # Initialise a Search index page serializer.
     #
+    # @param [ActionDispatch::Request] request the current request object.
     # @param [String] opensearch_description_url a description url for the search.
     # @param [String] query a query string used for the search.
     # @param [Array<Object>] results an array of objects used for displaying results.
     # @param [Hash] pagination_hash a hash containing data used for pagination.
     # @param [String] flash_message a translation block that is evaluated into a flash message.
-    # @param [String] request_id AppInsights request id
-    # @param [String] request_original_url original url of the request
-    def initialize(opensearch_description_url: nil, query: nil, results: nil, pagination_hash: nil, flash_message: nil, request_id: nil, request_original_url: nil)
+    def initialize(request: nil, opensearch_description_url: nil, query: nil, results: nil, pagination_hash: nil, flash_message: nil)
       @opensearch_description_url = opensearch_description_url
       @query = query
       @results = results
       @pagination_helper = PaginationHelper.new(pagination_hash) if pagination_hash
       @flash_message = flash_message
 
-      super(request_id: request_id, data_alternates: nil, request_original_url: request_original_url)
+      super(request: request, data_alternates: nil)
     end
 
     private
diff --git a/app/serializers/page_serializer/search_page/landing_page_serializer.rb b/app/serializers/page_serializer/search_page/landing_page_serializer.rb
index 5c23e78a..cdb68940 100644
--- a/app/serializers/page_serializer/search_page/landing_page_serializer.rb
+++ b/app/serializers/page_serializer/search_page/landing_page_serializer.rb
@@ -6,9 +6,7 @@ class LandingPageSerializer < PageSerializer::SearchPage
       private
 
       def meta
-        super(title: title).tap do |meta|
-          meta[:opensearch_description_url] = opensearch_description_url if opensearch_description_url
-        end
+        super(title: title)
       end
 
       def title
diff --git a/app/serializers/page_serializer/statutory_instruments_show_page_serializer.rb b/app/serializers/page_serializer/statutory_instruments_show_page_serializer.rb
index 11e285a8..a8fdc746 100644
--- a/app/serializers/page_serializer/statutory_instruments_show_page_serializer.rb
+++ b/app/serializers/page_serializer/statutory_instruments_show_page_serializer.rb
@@ -2,15 +2,14 @@ module PageSerializer
   class StatutoryInstrumentsShowPageSerializer < LaidThingShowPageSerializer
     # Initialise a Statutory Instruments show page serializer.
     #
+    # @param [ActionDispatch::Request] request the current request object.
     # @param [<Grom::Node>] statutory_instrument a Grom::Node object of type StatutoryInstrumentPaper.
-    # @param [String] request_id AppInsights request id
-    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls
-    # @param [String] request_original_url original url of the request
-    def initialize(statutory_instrument:, request_id: nil, data_alternates: nil, request_original_url: nil)
+    # @param [Array<Hash>] data_alternates array containing the href and type of the alternative data urls.
+    def initialize(request: nil, statutory_instrument:, data_alternates: nil)
       @statutory_instrument                              = statutory_instrument
       @preceding_proposed_negative_statutory_instruments = @statutory_instrument.proposed_negative_statutory_instrument_papers
 
-      super(laid_thing: @statutory_instrument, request_id: request_id, data_alternates: data_alternates, request_original_url: request_original_url)
+      super(request: request, laid_thing: @statutory_instrument, data_alternates: data_alternates)
     end
 
     private
diff --git a/app/services/search_service.rb b/app/services/search_service.rb
index e73fe2fb..29714381 100644
--- a/app/services/search_service.rb
+++ b/app/services/search_service.rb
@@ -51,8 +51,6 @@ def pagination_hash
 
   def build_request
     headers = {}.tap do |hash|
-      hash['Accept']                     = 'application/atom+xml'
-      hash['Ocp-Apim-Subscription-Key']  = ENV['OPENSEARCH_AUTH_TOKEN']
       hash['Request-Id']                 = "#{app_insights_request_id}1" if app_insights_request_id
     end
 
diff --git a/config/initializers/timeout.rb b/config/initializers/timeout.rb
index f7cb2603..26f55845 100644
--- a/config/initializers/timeout.rb
+++ b/config/initializers/timeout.rb
@@ -1,4 +1,4 @@
-if ENV['DISABLE_TIMEOUT']
+if ENV['DISABLE_TIMEOUT'] || Rails.env.test?
   Rails.application.config.middleware.delete Rack::Timeout
 else
   Rails.application.config.middleware.insert_before Rack::Runtime, Rack::Timeout, service_timeout: 5
diff --git a/spec/controllers/group_controller_spec.rb b/spec/controllers/group_controller_spec.rb
index f6348d6a..071bc2d5 100644
--- a/spec/controllers/group_controller_spec.rb
+++ b/spec/controllers/group_controller_spec.rb
@@ -40,7 +40,7 @@
 
     it 'calls the serializer correctly' do
       list_components = [{"data"=> {"heading"=> {"data"=> {"content"=>"groupName - 1", "link"=>"/groups/tz34m7Vt", "size"=>2}, "name"=>"heading"}, "paragraph"=> {"data"=> [{"content"=>"28 July 1997 to 12 September 2017"}],"name"=>"paragraph"}}, "name"=>"card__generic"}]
-      expect(PageSerializer::ListPageSerializer).to have_received(:new).with(page_title: "groups.index.title", list_components: list_components, request_id: '|1234abcd.', data_alternates: data_alternates, request_original_url: request.original_url)
+      expect(PageSerializer::ListPageSerializer).to have_received(:new).with(request: request, page_title: "groups.index.title", list_components: list_components, data_alternates: data_alternates)
     end
   end
 
@@ -82,7 +82,7 @@
     it 'calls the serializer correctly' do
       group = assigns(:group)
 
-      expect(PageSerializer::GroupsShowPageSerializer).to have_received(:new).with(group: group, request_id: '|1234abcd.', data_alternates: data_alternates, request_original_url: request.original_url)
+      expect(PageSerializer::GroupsShowPageSerializer).to have_received(:new).with(request: request, group: group, data_alternates: data_alternates)
     end
   end
 end
diff --git a/spec/controllers/proposed_negative_statutory_instruments_controller_spec.rb b/spec/controllers/proposed_negative_statutory_instruments_controller_spec.rb
index 112046bf..1191ac32 100644
--- a/spec/controllers/proposed_negative_statutory_instruments_controller_spec.rb
+++ b/spec/controllers/proposed_negative_statutory_instruments_controller_spec.rb
@@ -41,7 +41,7 @@
 
     it 'calls the serializer correctly' do
       list_components = [{"data"=> {"heading"=> {"data"=> {"content"=>"proposedNegativeStatutoryInstrumentPaperName - 1", "link"=>"/proposed-negative-statutory-instruments/Tn1xqHc0", "size"=>2}, "name"=>"heading"}}, "name"=>"card__generic"}]
-      expect(PageSerializer::ListPageSerializer).to have_received(:new).with(page_title: "proposed-negative-statutory-instruments.index.title", list_components: list_components, request_id: '|1234abcd.', data_alternates: data_alternates, request_original_url: request.original_url)
+      expect(PageSerializer::ListPageSerializer).to have_received(:new).with(request: request, page_title: "proposed-negative-statutory-instruments.index.title", list_components: list_components, data_alternates: data_alternates)
     end
   end
 
@@ -83,7 +83,7 @@
     it 'calls the serializer correctly' do
       statutory_instrument = assigns(:proposed_negative_statutory_instrument)
 
-      expect(PageSerializer::ProposedNegativeStatutoryInstrumentsShowPageSerializer).to have_received(:new).with(proposed_negative_statutory_instrument: statutory_instrument, request_id: '|1234abcd.', data_alternates: data_alternates, request_original_url: request.original_url)
+      expect(PageSerializer::ProposedNegativeStatutoryInstrumentsShowPageSerializer).to have_received(:new).with(request: request, proposed_negative_statutory_instrument: statutory_instrument, data_alternates: data_alternates)
     end
   end
 end
diff --git a/spec/controllers/search_controller_spec.rb b/spec/controllers/search_controller_spec.rb
index cdec7470..8da0cb60 100644
--- a/spec/controllers/search_controller_spec.rb
+++ b/spec/controllers/search_controller_spec.rb
@@ -22,12 +22,10 @@
     context 'with a query' do
       context 'with a valid search' do
         before(:each) do
-          allow(controller.request).to receive(:env).and_return({'ApplicationInsights.request.id' => '|1234abcd.'})
+          allow_any_instance_of(ActionController::TestRequest).to receive(:env).and_return({'ApplicationInsights.request.id' => '|1234abcd.'})
 
           allow(PageSerializer::SearchPage::ResultsPageSerializer).to receive(:new)
-        end
 
-        before(:each) do
           search_service_instance = double(
               'search_service_instance',
               query_nil_or_empty?: false,
@@ -55,7 +53,7 @@
         end
 
         it 'calls the serializer with the correct arguments' do
-          expect(PageSerializer::SearchPage::ResultsPageSerializer).to have_received(:new).with(opensearch_description_url: 'http://:/search/opensearch', query: 'banana', results: [1, 2, 3], pagination_hash: 'pagination_hash', request_id: '|1234abcd.', request_original_url: request.original_url)
+          expect(PageSerializer::SearchPage::ResultsPageSerializer).to have_received(:new).with(request: request, query: 'banana', results: [1, 2, 3], pagination_hash: 'pagination_hash')
         end
       end
 
@@ -81,7 +79,7 @@
               query: 'fdsfsd'
           }
 
-          expect(PageSerializer::SearchPage::ResultsPageSerializer).to have_received(:new).with(opensearch_description_url: 'http://test.host/search/opensearch', query: 'fdsfsd', results: an_instance_of(Feedjira::Parser::Atom), pagination_hash: pagination_hash, request_id: '|1234abcd.', request_original_url: request.original_url)
+          expect(PageSerializer::SearchPage::ResultsPageSerializer).to have_received(:new).with(request: request, query: 'fdsfsd', results: an_instance_of(Feedjira::Parser::Atom), pagination_hash: pagination_hash)
         end
       end
 
@@ -98,7 +96,7 @@
         end
 
         it 'calls the serializer with the correct arguments' do
-          expect(PageSerializer::SearchPage::LandingPageSerializer).to have_received(:new).with(opensearch_description_url: 'http://test.host/search/opensearch', flash_message: I18n.t('search_controller.index.flash'), request_id: '|1234abcd.', request_original_url: request.original_url)
+          expect(PageSerializer::SearchPage::LandingPageSerializer).to have_received(:new).with(request: request, flash_message: I18n.t('search_controller.index.flash'))
         end
       end
 
@@ -161,7 +159,7 @@
 
           get :index, params: { q: 'Allan Wazacz' }
 
-          expect(PageSerializer::SearchPage::ResultsPageSerializer).to have_received(:new).with(opensearch_description_url: 'http://test.host/search/opensearch', query: 'Allan Wazacz', request_id: '|1234abcd.', request_original_url: request.original_url)
+          expect(PageSerializer::SearchPage::ResultsPageSerializer).to have_received(:new).with(request: request, query: 'Allan Wazacz')
         end
       end
     end
@@ -182,8 +180,8 @@
         <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
           <ShortName>UK Parliament</ShortName>
           <Description>Search UK Parliament online content</Description>
-          <Image height="16" width="16" type="image/x-icon">http://test.host/favicon.ico</Image>
-          <Url type="text/html" template="http://test.host/search?q={searchTerms}&amp;start_index={startIndex?}&amp;count={count?}" />
+          <Image height="16" width="16" type="image/x-icon">https://test.host/favicon.ico</Image>
+          <Url type="text/html" template="https://test.host/search?q={searchTerms}&amp;start_index={startIndex?}&amp;count={count?}" />
         </OpenSearchDescription>
       XML
 
diff --git a/spec/controllers/statutory_instruments_controller_spec.rb b/spec/controllers/statutory_instruments_controller_spec.rb
index 6660c8ad..a9d170f7 100644
--- a/spec/controllers/statutory_instruments_controller_spec.rb
+++ b/spec/controllers/statutory_instruments_controller_spec.rb
@@ -41,7 +41,7 @@
 
     it 'calls the serializer correctly' do
       list_components = [{"data"=> {"heading"=> {"data"=> {"content"=>"statutoryInstrumentPaperName - 1", "link"=>"/statutory-instruments/5trFJNih", "size"=>2}, "name"=>"heading"}}, "name"=>"card__generic"}]
-      expect(PageSerializer::ListPageSerializer).to have_received(:new).with(page_title: "statutory-instruments.index.title", list_components: list_components, request_id: '|1234abcd.', data_alternates: data_alternates, request_original_url: request.original_url)
+      expect(PageSerializer::ListPageSerializer).to have_received(:new).with(request: request, page_title: "statutory-instruments.index.title", list_components: list_components, data_alternates: data_alternates)
     end
   end
 
@@ -83,7 +83,7 @@
     it 'calls the serializer correctly' do
       statutory_instrument = assigns(:statutory_instrument)
 
-      expect(PageSerializer::StatutoryInstrumentsShowPageSerializer).to have_received(:new).with(statutory_instrument: statutory_instrument, request_id: '|1234abcd.', data_alternates: data_alternates, request_original_url: request.original_url)
+      expect(PageSerializer::StatutoryInstrumentsShowPageSerializer).to have_received(:new).with(request: request, statutory_instrument: statutory_instrument, data_alternates: data_alternates)
     end
   end
 end
diff --git a/spec/fixtures/controllers/groups_controller/index/fixture.yml b/spec/fixtures/controllers/groups_controller/index/fixture.yml
index 00d41afe..2c6773be 100644
--- a/spec/fixtures/controllers/groups_controller/index/fixture.yml
+++ b/spec/fixtures/controllers/groups_controller/index/fixture.yml
@@ -21,11 +21,12 @@ meta:
     href: http://localhost:3030/group_index.xml
   open-graph:
     title: groups.index.title
-    original-url: http://www.example.com/groups
+    original-url: https://www.example.com/groups
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/groups_controller/show/fixture.yml b/spec/fixtures/controllers/groups_controller/show/fixture.yml
index c1d4368a..d36eac13 100644
--- a/spec/fixtures/controllers/groups_controller/show/fixture.yml
+++ b/spec/fixtures/controllers/groups_controller/show/fixture.yml
@@ -21,11 +21,12 @@ meta:
     href: http://localhost:3030/group_by_id.xml?group_id=0RNgrC4q
   open-graph:
     title: groupName - 1
-    original-url: http://www.example.com/groups/0RNgrC4q
+    original-url: https://www.example.com/groups/0RNgrC4q
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/home_controller/index/fixture.yml b/spec/fixtures/controllers/home_controller/index/fixture.yml
index 1098503c..1379d2f8 100644
--- a/spec/fixtures/controllers/home_controller/index/fixture.yml
+++ b/spec/fixtures/controllers/home_controller/index/fixture.yml
@@ -4,14 +4,14 @@ layout:
 meta:
   title: beta.parliament.uk
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: beta.parliament.uk
-    original-url: http://www.example.com/
+    original-url: https://www.example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/index/fixture.yml b/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/index/fixture.yml
index 93ca33dc..08e8ccaf 100644
--- a/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/index/fixture.yml
+++ b/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/index/fixture.yml
@@ -21,11 +21,12 @@ meta:
     href: http://localhost:3030/proposed_negative_statutory_instrument_index.xml
   open-graph:
     title: proposed-negative-statutory-instruments.index.title
-    original-url: http://www.example.com/proposed-negative-statutory-instruments
+    original-url: https://www.example.com/proposed-negative-statutory-instruments
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/show/fixture.yml b/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/show/fixture.yml
index bbb79d12..2310b873 100644
--- a/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/show/fixture.yml
+++ b/spec/fixtures/controllers/proposed_negative_statutory_instruments_controller/show/fixture.yml
@@ -21,11 +21,12 @@ meta:
     href: http://localhost:3030/proposed_negative_statutory_instrument_by_id.xml?proposed_negative_statutory_instrument_id=12345678
   open-graph:
     title: proposedNegativeStatutoryInstrumentPaperName - 1
-    original-url: http://www.example.com/proposed-negative-statutory-instruments/12345678
+    original-url: https://www.example.com/proposed-negative-statutory-instruments/12345678
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/edgecase.yml b/spec/fixtures/controllers/search_controller/index/edgecase.yml
index 74c3cfbf..6e8cb246 100644
--- a/spec/fixtures/controllers/search_controller/index/edgecase.yml
+++ b/spec/fixtures/controllers/search_controller/index/edgecase.yml
@@ -4,17 +4,16 @@ layout:
 meta:
   title: test - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: test - Search - UK Parliament
-    original-url: http://www.example.com/search?count=100&q=test&start_index=70100
+    original-url: https://www.example.com/search?count=100&q=test&start_index=70100
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
   components:
   - name: head__search-result-tracking
-  opensearch-description-url: http://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/empty_query.yml b/spec/fixtures/controllers/search_controller/index/empty_query.yml
index 506b0391..8ed34c72 100644
--- a/spec/fixtures/controllers/search_controller/index/empty_query.yml
+++ b/spec/fixtures/controllers/search_controller/index/empty_query.yml
@@ -4,15 +4,14 @@ layout:
 meta:
   title: No Results - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: No Results - Search - UK Parliament
-    original-url: http://www.example.com/search?q=
+    original-url: https://www.example.com/search?q=
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
-  opensearch-description-url: http://www.example.com/search/opensearch
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/last_page.yml b/spec/fixtures/controllers/search_controller/index/last_page.yml
index c7ff5fcd..27b46181 100644
--- a/spec/fixtures/controllers/search_controller/index/last_page.yml
+++ b/spec/fixtures/controllers/search_controller/index/last_page.yml
@@ -4,17 +4,16 @@ layout:
 meta:
   title: diane abbott - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: diane abbott - Search - UK Parliament
-    original-url: http://www.example.com/search?count=10&q=diane+abbott&start_index=7471
+    original-url: https://www.example.com/search?count=10&q=diane+abbott&start_index=7471
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
   components:
   - name: head__search-result-tracking
-  opensearch-description-url: http://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/linux_first_page.yml b/spec/fixtures/controllers/search_controller/index/linux_first_page.yml
index 7801eb9a..9d7a0be5 100644
--- a/spec/fixtures/controllers/search_controller/index/linux_first_page.yml
+++ b/spec/fixtures/controllers/search_controller/index/linux_first_page.yml
@@ -4,17 +4,16 @@ layout:
 meta:
   title: linux - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: linux - Search - UK Parliament
-    original-url: http://www.example.com/search?q=linux
+    original-url: https://www.example.com/search?q=linux
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
   components:
   - name: head__search-result-tracking
-  opensearch-description-url: http://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/linux_last_page.yml b/spec/fixtures/controllers/search_controller/index/linux_last_page.yml
index 7d8fd275..149dab61 100644
--- a/spec/fixtures/controllers/search_controller/index/linux_last_page.yml
+++ b/spec/fixtures/controllers/search_controller/index/linux_last_page.yml
@@ -4,17 +4,16 @@ layout:
 meta:
   title: linux - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: linux - Search - UK Parliament
-    original-url: http://www.example.com/search?count=10&q=linux&start_index=31
+    original-url: https://www.example.com/search?count=10&q=linux&start_index=31
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
   components:
   - name: head__search-result-tracking
-  opensearch-description-url: http://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/no_results.yml b/spec/fixtures/controllers/search_controller/index/no_results.yml
index 9ecb411d..7ee996c7 100644
--- a/spec/fixtures/controllers/search_controller/index/no_results.yml
+++ b/spec/fixtures/controllers/search_controller/index/no_results.yml
@@ -4,15 +4,14 @@ layout:
 meta:
   title: dfgdfh89rhosiubreoweh - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: dfgdfh89rhosiubreoweh - Search - UK Parliament
-    original-url: http://www.example.com/search?q=dfgdfh89rhosiubreoweh
+    original-url: https://www.example.com/search?q=dfgdfh89rhosiubreoweh
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
-  opensearch-description-url: http://www.example.com/search/opensearch
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/search.yml b/spec/fixtures/controllers/search_controller/index/search.yml
index 46221dce..191213ac 100644
--- a/spec/fixtures/controllers/search_controller/index/search.yml
+++ b/spec/fixtures/controllers/search_controller/index/search.yml
@@ -4,15 +4,14 @@ layout:
 meta:
   title: Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: Search - UK Parliament
-    original-url: http://www.example.com/search
+    original-url: https://www.example.com/search
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
-  opensearch-description-url: http://www.example.com/search/opensearch
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/second_page.yml b/spec/fixtures/controllers/search_controller/index/second_page.yml
index 98d769eb..25665ef5 100644
--- a/spec/fixtures/controllers/search_controller/index/second_page.yml
+++ b/spec/fixtures/controllers/search_controller/index/second_page.yml
@@ -4,17 +4,16 @@ layout:
 meta:
   title: diane abbott - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: diane abbott - Search - UK Parliament
-    original-url: http://www.example.com/search?count=10&q=diane+abbott&start_index=11
+    original-url: https://www.example.com/search?count=10&q=diane+abbott&start_index=11
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
   components:
   - name: head__search-result-tracking
-  opensearch-description-url: http://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/search_controller/index/with_a_query.yml b/spec/fixtures/controllers/search_controller/index/with_a_query.yml
index 2e32ebc5..547562b7 100644
--- a/spec/fixtures/controllers/search_controller/index/with_a_query.yml
+++ b/spec/fixtures/controllers/search_controller/index/with_a_query.yml
@@ -4,17 +4,16 @@ layout:
 meta:
   title: hello - Search - UK Parliament
   request-id: 123456
-  data-alternates: 
   open-graph:
     title: hello - Search - UK Parliament
-    original-url: http://www.example.com/search?q=hello
+    original-url: https://www.example.com/search?q=hello
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
   components:
   - name: head__search-result-tracking
-  opensearch-description-url: http://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/statutory_instruments_controller/index/fixture.yml b/spec/fixtures/controllers/statutory_instruments_controller/index/fixture.yml
index e6da0ec7..0bf01eaf 100644
--- a/spec/fixtures/controllers/statutory_instruments_controller/index/fixture.yml
+++ b/spec/fixtures/controllers/statutory_instruments_controller/index/fixture.yml
@@ -21,11 +21,12 @@ meta:
     href: http://localhost:3030/statutory_instrument_index.xml
   open-graph:
     title: statutory-instruments.index.title
-    original-url: http://www.example.com/statutory-instruments
+    original-url: https://www.example.com/statutory-instruments
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/controllers/statutory_instruments_controller/show/fixture.yml b/spec/fixtures/controllers/statutory_instruments_controller/show/fixture.yml
index f107aa7d..3b0f29ff 100644
--- a/spec/fixtures/controllers/statutory_instruments_controller/show/fixture.yml
+++ b/spec/fixtures/controllers/statutory_instruments_controller/show/fixture.yml
@@ -21,11 +21,12 @@ meta:
     href: http://localhost:3030/statutory_instrument_by_id.xml?statutory_instrument_id=1234567
   open-graph:
     title: statutoryInstrumentPaperName - 1
-    original-url: http://www.example.com/statutory-instruments/1234567
+    original-url: https://www.example.com/statutory-instruments/1234567
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://www.example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/fixture.yml b/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/fixture.yml
index 6dacd06a..882ae500 100644
--- a/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/fixture.yml
+++ b/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/fixture.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: Group Test
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: Group Test
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/group_missing_data.yml b/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/group_missing_data.yml
index 49b67a44..4ecc19ce 100644
--- a/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/group_missing_data.yml
+++ b/spec/fixtures/serializers/page_serializer/groups_show_page_serializer/group_missing_data.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: Group Test
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: Group Test
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/home_page_serializer/fixture.yml b/spec/fixtures/serializers/page_serializer/home_page_serializer/fixture.yml
index 1dfc940a..7c5a5afb 100644
--- a/spec/fixtures/serializers/page_serializer/home_page_serializer/fixture.yml
+++ b/spec/fixtures/serializers/page_serializer/home_page_serializer/fixture.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: beta.parliament.uk
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: beta.parliament.uk
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/fixture.yml b/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/fixture.yml
index 02a9a81d..a77d03f9 100644
--- a/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/fixture.yml
+++ b/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/fixture.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: 
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: 
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/laid_thing_missing_data.yml b/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/laid_thing_missing_data.yml
index 02a9a81d..a77d03f9 100644
--- a/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/laid_thing_missing_data.yml
+++ b/spec/fixtures/serializers/page_serializer/laid_thing_show_page_serializer/laid_thing_missing_data.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: 
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: 
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/list_page_serializer/fixture.yml b/spec/fixtures/serializers/page_serializer/list_page_serializer/fixture.yml
index c583725d..9156c77c 100644
--- a/spec/fixtures/serializers/page_serializer/list_page_serializer/fixture.yml
+++ b/spec/fixtures/serializers/page_serializer/list_page_serializer/fixture.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: Test page
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: Test page
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/fixture.yml b/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/fixture.yml
index c90fa363..1b433ab5 100644
--- a/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/fixture.yml
+++ b/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/fixture.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: Proposed Negative SI Paper Test
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: Proposed Negative SI Paper Test
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/si_missing_data.yml b/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/si_missing_data.yml
index dcee11af..3e299f06 100644
--- a/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/si_missing_data.yml
+++ b/spec/fixtures/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer/si_missing_data.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: SI Paper Test
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: SI Paper Test
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/with_flash_message.yml b/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/with_flash_message.yml
index 1719f62a..1b2e1201 100644
--- a/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/with_flash_message.yml
+++ b/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/with_flash_message.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: No Results - Search - UK Parliament
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: No Results - Search - UK Parliament
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/without_query.yml b/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/without_query.yml
index de5cc215..5b0d9e33 100644
--- a/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/without_query.yml
+++ b/spec/fixtures/serializers/page_serializer/search_page/landing_page_serializer/without_query.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: Search - UK Parliament
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: Search - UK Parliament
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/no_results.yml b/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/no_results.yml
index 83a1cc9c..ac718b62 100644
--- a/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/no_results.yml
+++ b/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/no_results.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: hello - Search - UK Parliament
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: hello - Search - UK Parliament
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/with_a_query.yml b/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/with_a_query.yml
index e31403ee..0d44ebf5 100644
--- a/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/with_a_query.yml
+++ b/spec/fixtures/serializers/page_serializer/search_page/results_page_serializer/with_a_query.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: hello - Search - UK Parliament
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: hello - Search - UK Parliament
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
   components:
   - name: head__search-result-tracking
 header-components:
diff --git a/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/fixture.yml b/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/fixture.yml
index e143e544..18b9d3e2 100644
--- a/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/fixture.yml
+++ b/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/fixture.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: SI Paper Test
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: SI Paper Test
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/si_missing_data.yml b/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/si_missing_data.yml
index 412577ce..154f6b4e 100644
--- a/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/si_missing_data.yml
+++ b/spec/fixtures/serializers/page_serializer/statutory_instruments_show_page_serializer/si_missing_data.yml
@@ -3,14 +3,15 @@ layout:
   template: layout
 meta:
   title: SI Paper Test
-  data-alternates: 
+  request-id: 123456
   open-graph:
     title: SI Paper Test
-    original-url: 
+    original-url: https://example.com/
     image-url: https://static.parliament.uk/assets-public/opengraph-oblong.png
     image-width: '1200'
     image-height: '630'
     twitter-card: summary_large_image
+  opensearch-description-url: https://example.com/search/opensearch
 header-components:
 - name: link
   data:
diff --git a/spec/integration/controllers/groups_controller_spec.rb b/spec/integration/controllers/groups_controller_spec.rb
index 3d334be8..9a4e7127 100644
--- a/spec/integration/controllers/groups_controller_spec.rb
+++ b/spec/integration/controllers/groups_controller_spec.rb
@@ -3,7 +3,7 @@
 RSpec.describe GroupsController, vcr: true do
   describe 'GET index' do
     before(:each) do
-      allow_any_instance_of(GroupsController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::ListPageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the index page' do
@@ -20,7 +20,7 @@
 
   describe 'GET show' do
     before(:each) do
-      allow_any_instance_of(GroupsController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::GroupsShowPageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the show page' do
@@ -30,7 +30,7 @@
 
         expected_json = get_fixture('show', 'fixture')
 
-        expect(JSON.parse(response.body).to_yaml).to eq(expected_json)
+        expect(JSON.parse(filtered_response_body).to_yaml).to eq(expected_json)
       end
     end
   end
diff --git a/spec/integration/controllers/home_controller_spec.rb b/spec/integration/controllers/home_controller_spec.rb
index c02e0019..4893349b 100644
--- a/spec/integration/controllers/home_controller_spec.rb
+++ b/spec/integration/controllers/home_controller_spec.rb
@@ -3,7 +3,7 @@
 RSpec.describe HomeController, vcr: true do
   describe 'GET index' do
     before(:each) do
-      allow_any_instance_of(HomeController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::HomePageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the index page' do
diff --git a/spec/integration/controllers/proposed_negative_statutory_instruments_controller_spec.rb b/spec/integration/controllers/proposed_negative_statutory_instruments_controller_spec.rb
index 465823d3..efd8c02a 100644
--- a/spec/integration/controllers/proposed_negative_statutory_instruments_controller_spec.rb
+++ b/spec/integration/controllers/proposed_negative_statutory_instruments_controller_spec.rb
@@ -3,7 +3,7 @@
 RSpec.describe ProposedNegativeStatutoryInstrumentsController, vcr: true do
   describe 'GET index' do
     before(:each) do
-      allow_any_instance_of(ProposedNegativeStatutoryInstrumentsController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::ListPageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the index page' do
@@ -20,7 +20,7 @@
 
   describe 'GET show' do
     before(:each) do
-      allow_any_instance_of(ProposedNegativeStatutoryInstrumentsController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::ProposedNegativeStatutoryInstrumentsShowPageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the show page' do
diff --git a/spec/integration/controllers/search_controller_spec.rb b/spec/integration/controllers/search_controller_spec.rb
index 1049b301..50d6be6a 100644
--- a/spec/integration/controllers/search_controller_spec.rb
+++ b/spec/integration/controllers/search_controller_spec.rb
@@ -3,7 +3,8 @@
 RSpec.describe SearchController, vcr: true do
   describe 'GET index' do
     before(:each) do
-      allow_any_instance_of(SearchController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::SearchPage::LandingPageSerializer).to receive(:request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::SearchPage::ResultsPageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the search page' do
diff --git a/spec/integration/controllers/statutory_instruments_controller_spec.rb b/spec/integration/controllers/statutory_instruments_controller_spec.rb
index 24704f3f..f4682279 100644
--- a/spec/integration/controllers/statutory_instruments_controller_spec.rb
+++ b/spec/integration/controllers/statutory_instruments_controller_spec.rb
@@ -3,7 +3,7 @@
 RSpec.describe StatutoryInstrumentsController, vcr: true do
   describe 'GET index' do
     before(:each) do
-      allow_any_instance_of(StatutoryInstrumentsController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::ListPageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the index page' do
@@ -20,7 +20,7 @@
 
   describe 'GET show' do
     before(:each) do
-      allow_any_instance_of(StatutoryInstrumentsController).to receive(:app_insights_request_id) { 123456 }
+      allow_any_instance_of(PageSerializer::StatutoryInstrumentsShowPageSerializer).to receive(:request_id) { 123456 }
     end
 
     context 'navigating to the show page' do
diff --git a/spec/serializers/component_serializer/link_button_component_serializer_spec.rb b/spec/serializers/component_serializer/link_button_component_serializer_spec.rb
index 46913a1d..d85290b3 100644
--- a/spec/serializers/component_serializer/link_button_component_serializer_spec.rb
+++ b/spec/serializers/component_serializer/link_button_component_serializer_spec.rb
@@ -20,7 +20,7 @@
 
     it 'when given a display_data argument returns a hash containing the name and data' do
       serializer = described_class.new(link: '/mps', text: 'MPs', download: true, display_data: 'display_data')
-create_fixture(serializer, 'with_display_data')
+
       expected = get_fixture('with_display_data')
 
       expect(serializer.to_yaml).to eq expected
diff --git a/spec/serializers/page_serializer/base_page_serializer_spec.rb b/spec/serializers/page_serializer/base_page_serializer_spec.rb
index 6539f801..1ec3e41d 100644
--- a/spec/serializers/page_serializer/base_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/base_page_serializer_spec.rb
@@ -1,13 +1,9 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::BasePageSerializer do
-  let(:base_page_serializer) { described_class.new }
+  include_context "sample request", include_shared: true
 
-  context '#opensearch_description_url' do
-    it 'raises an error' do
-      expect { base_page_serializer.send(:opensearch_description_url) }.to raise_error('You must implement #opensearch_description_url')
-    end
-  end
+  let(:base_page_serializer) { described_class.new(request: request) }
 
   context '#main_components' do
     it 'raises an error' do
@@ -30,4 +26,10 @@
       expect(PartialSerializer::FooterComponentsPartialSerializer).to have_received(:new)
     end
   end
+
+  context 'with no original url, or a unexpected request' do
+    it 'has a nil original_url' do
+      expect(described_class.new(request: nil).request_original_url).to be_nil
+    end
+  end
 end
diff --git a/spec/serializers/page_serializer/groups_show_page_serializer_spec.rb b/spec/serializers/page_serializer/groups_show_page_serializer_spec.rb
index adec6b7f..9f42576d 100644
--- a/spec/serializers/page_serializer/groups_show_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/groups_show_page_serializer_spec.rb
@@ -1,6 +1,7 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::GroupsShowPageSerializer do
+  include_context "sample request", include_shared: true
 
   let(:group) do
     double('group',
@@ -10,7 +11,7 @@
     )
   end
 
-  let(:subject) { described_class.new(group: group) }
+  let(:subject) { described_class.new(request: request, group: group) }
 
   context '#to_h' do
     it 'produces the expected JSON hash' do
@@ -30,7 +31,7 @@
     end
 
     it 'produces the expected JSON hash with missing data' do
-      serializer = described_class.new(group: group_missing_data)
+      serializer = described_class.new(request: request, group: group_missing_data)
 
       expected = get_fixture('group_missing_data')
 
diff --git a/spec/serializers/page_serializer/home_page_serializer_spec.rb b/spec/serializers/page_serializer/home_page_serializer_spec.rb
index 82739848..51fc2f26 100644
--- a/spec/serializers/page_serializer/home_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/home_page_serializer_spec.rb
@@ -1,6 +1,7 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::HomePageSerializer, vcr: true do
+  include_context "sample request", include_shared: true
 
   context '#to_h' do
     it 'produces a JSON hash' do
diff --git a/spec/serializers/page_serializer/laid_thing_show_page_serializer_spec.rb b/spec/serializers/page_serializer/laid_thing_show_page_serializer_spec.rb
index 6516b9bf..d37d6c66 100644
--- a/spec/serializers/page_serializer/laid_thing_show_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/laid_thing_show_page_serializer_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::LaidThingShowPageSerializer do
+  include_context "sample request", include_shared: true
+
   let(:laying_body) { double('laying_body', name: 'LayingBodyTest', graph_id: 'E1234567') }
   let(:laying_person) { double('laying_person', display_name: 'LayingPersonTest', graph_id: 'F1234567') }
   let(:laying) { double('laying', body: laying_body, person: laying_person, date: DateTime.new(2018, 8, 10, 0, 0), graph_id: 'G1234567') }
@@ -15,11 +17,10 @@
     )
   end
 
-  let(:subject) { described_class.new(laid_thing: laid_thing) }
+  subject { described_class.new(request: request, laid_thing: laid_thing) }
 
   context '#to_h' do
     it 'produces the expected JSON hash' do
-create_fixture(subject, 'fixture')
       expected = get_fixture('fixture')
 
       expect(subject.to_yaml).to eq expected
@@ -36,7 +37,7 @@
     end
 
     it 'produces the expected JSON hash with missing data' do
-      serializer = described_class.new(laid_thing: laid_thing_missing_data)
+      serializer = described_class.new(request: request, laid_thing: laid_thing_missing_data)
 
       expected = get_fixture('laid_thing_missing_data')
 
diff --git a/spec/serializers/page_serializer/list_page_serializer_spec.rb b/spec/serializers/page_serializer/list_page_serializer_spec.rb
index b49f49a2..b787bd7e 100644
--- a/spec/serializers/page_serializer/list_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/list_page_serializer_spec.rb
@@ -1,7 +1,9 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::ListPageSerializer do
-  let(:subject) { described_class.new(page_title: 'Test page', list_components: [{ list_component: 'list component' }]) }
+  include_context "sample request", include_shared: true
+
+  subject { described_class.new(request: request, page_title: 'Test page', list_components: [{ list_component: 'list component' }]) }
 
   context 'the serializers are correctly called' do
     context '#content' do
diff --git a/spec/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer_spec.rb b/spec/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer_spec.rb
index 6b6b5d38..a886eede 100644
--- a/spec/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/proposed_negative_statutory_instruments_show_page_serializer_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::ProposedNegativeStatutoryInstrumentsShowPageSerializer do
+  include_context "sample request", include_shared: true
+
   let(:laying_body) { double('laying_body', name: 'LayingBodyTest', graph_id: 'E1234567') }
   let(:laying_person) { double('laying_person', display_name: 'LayingPersonTest', graph_id: 'F1234567') }
   let(:laying) { double('laying', body: laying_body, person: laying_person, date: DateTime.new(2018, 8, 10, 0, 0), graph_id: 'G1234567') }
@@ -19,7 +21,7 @@
     )
   end
 
-  let(:subject) { described_class.new(proposed_negative_statutory_instrument: proposed_negative_statutory_instrument) }
+  subject { described_class.new(request: request, proposed_negative_statutory_instrument: proposed_negative_statutory_instrument) }
 
   context '#to_h' do
     it 'produces the expected JSON hash' do
@@ -42,7 +44,7 @@
     end
 
     it 'produces the expected JSON hash with missing data' do
-      serializer = described_class.new(proposed_negative_statutory_instrument: si_missing_data)
+      serializer = described_class.new(request: request, proposed_negative_statutory_instrument: si_missing_data)
 
       expected = get_fixture('si_missing_data')
 
diff --git a/spec/serializers/page_serializer/search_page/landing_page_serializer_spec.rb b/spec/serializers/page_serializer/search_page/landing_page_serializer_spec.rb
index cbe83e59..daf32919 100644
--- a/spec/serializers/page_serializer/search_page/landing_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/search_page/landing_page_serializer_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../../rails_helper'
 
 RSpec.describe PageSerializer::SearchPage::LandingPageSerializer do
+  include_context "sample request", include_shared: true
+
   context '#to_h' do
     context 'without a query' do
       it 'produces the correct hash' do
@@ -13,7 +15,7 @@
 
     context 'with a flash message' do
       it 'produces the correct hash' do
-        serializer = described_class.new(flash_message: 'some flash message')
+        serializer = described_class.new(request: request, flash_message: 'some flash message')
 
         expected = get_fixture('with_flash_message')
 
@@ -37,7 +39,7 @@
 
     context 'with a flash message' do
       it '#content' do
-        serializer = described_class.new(flash_message: 'some flash message')
+        serializer = described_class.new(request: request, flash_message: 'some flash message')
 
         allow(ComponentSerializer::SectionComponentSerializer).to receive(:new)
 
diff --git a/spec/serializers/page_serializer/search_page/results_page_serializer_spec.rb b/spec/serializers/page_serializer/search_page/results_page_serializer_spec.rb
index 666a5f62..19969f9f 100644
--- a/spec/serializers/page_serializer/search_page/results_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/search_page/results_page_serializer_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../../rails_helper'
 
 RSpec.describe PageSerializer::SearchPage::ResultsPageSerializer do
+  include_context "sample request", include_shared: true
+
   let(:pagination_hash) { { start_index: 11, count: 100, results_total: 345, query: 'hello' } }
   let(:result_one) {
     double(
@@ -36,7 +38,7 @@
   }
 
   let(:results) { double('results', totalResults: 658, entries: [result_one, result_two, result_three]) }
-  let(:subject) { described_class.new(query: 'hello', results: results, pagination_hash: pagination_hash) }
+  subject { described_class.new(request: request, query: 'hello', results: results, pagination_hash: pagination_hash) }
 
   context '#to_h' do
     context 'with a query' do
diff --git a/spec/serializers/page_serializer/search_page_spec.rb b/spec/serializers/page_serializer/search_page_spec.rb
index 8d3a54e2..892fa98f 100644
--- a/spec/serializers/page_serializer/search_page_spec.rb
+++ b/spec/serializers/page_serializer/search_page_spec.rb
@@ -1,8 +1,11 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::SearchPage do
+  include_context "sample request", include_shared: true
+
   let(:results) { double('results', totalResults: 658) }
-  let(:subject) { described_class.new(query: 'banana', results: results) }
+
+  subject { described_class.new(request: request, query: 'banana', results: results) }
 
   context 'raising errors' do
     it '#content' do
diff --git a/spec/serializers/page_serializer/statutory_instruments_show_page_serializer_spec.rb b/spec/serializers/page_serializer/statutory_instruments_show_page_serializer_spec.rb
index 9a0a3a38..5c94115c 100644
--- a/spec/serializers/page_serializer/statutory_instruments_show_page_serializer_spec.rb
+++ b/spec/serializers/page_serializer/statutory_instruments_show_page_serializer_spec.rb
@@ -1,6 +1,8 @@
 require_relative '../../rails_helper'
 
 RSpec.describe PageSerializer::StatutoryInstrumentsShowPageSerializer do
+  include_context "sample request", include_shared: true
+
   let(:laying_body) { double('laying_body', name: 'LayingBodyTest', graph_id: 'E1234567') }
   let(:laying_person) { double('laying_person', display_name: 'LayingPersonTest', graph_id: 'F1234567') }
   let(:laying) { double('laying', body: laying_body, person: laying_person, date: DateTime.new(2018, 8, 10, 0, 0), graph_id: 'G1234567') }
@@ -25,7 +27,7 @@
     )
   end
 
-  let(:subject) { described_class.new(statutory_instrument: statutory_instrument) }
+  subject { described_class.new(request: request, statutory_instrument: statutory_instrument) }
 
   context '#to_h' do
     it 'produces the expected JSON hash' do
@@ -54,7 +56,7 @@
     end
 
     it 'produces the expected JSON hash with missing data' do
-      serializer = described_class.new(statutory_instrument: si_missing_data)
+      serializer = described_class.new(request: request, statutory_instrument: si_missing_data)
 
       expected = get_fixture('si_missing_data')
 
diff --git a/spec/support/shared_contexts/sample_request.rb b/spec/support/shared_contexts/sample_request.rb
new file mode 100644
index 00000000..4a8e54af
--- /dev/null
+++ b/spec/support/shared_contexts/sample_request.rb
@@ -0,0 +1,10 @@
+RSpec.shared_context "sample request", :shared_context => :metadata do
+  let(:request) do
+    request = ActionDispatch::TestRequest.create({ 'ApplicationInsights.request.id' => 123456 })
+    request.host = 'example.com'
+
+    request
+  end
+
+  subject { described_class.new(request: request) }
+end
\ No newline at end of file