diff --git a/app/assets/stylesheets/responsive/_global_style.scss b/app/assets/stylesheets/responsive/_global_style.scss
index 119065eead..304a078b78 100644
--- a/app/assets/stylesheets/responsive/_global_style.scss
+++ b/app/assets/stylesheets/responsive/_global_style.scss
@@ -191,7 +191,7 @@ form button {
   padding: 2px 6px 3px;
   transition: none;
   &:hover, &:focus {
-    background: none;
+    background-color: inherit;
     color: inherit;
   }
 }
diff --git a/app/assets/stylesheets/responsive/alaveteli_pro/_projects_layout.scss b/app/assets/stylesheets/responsive/alaveteli_pro/_projects_layout.scss
index 3bd4c4cb65..72946d8ce1 100644
--- a/app/assets/stylesheets/responsive/alaveteli_pro/_projects_layout.scss
+++ b/app/assets/stylesheets/responsive/alaveteli_pro/_projects_layout.scss
@@ -294,41 +294,57 @@
 }
 
 #project-key-set {
-  .project-key-set__key {
-    &.project-key-set__key--removed {
-      display: none;
-    }
+  padding-bottom: 1em;
 
-    width: 75%;
+  .project-key-set__key {
+    padding: 1em;
+    margin-bottom: 1em;
 
     display: flex;
     flex-flow: row nowrap;
     justify-content: space-between;
 
+    border-radius: 5px;
+    box-shadow: rgba(0, 0, 0, 0.05) 0px 6px 24px 0px, rgba(0, 0, 0, 0.08) 0px 0px 0px 1px;
+
+    &.project-key-set__key--removed {
+      display: none;
+    }
+
     .project-key-set__key__drag-handle {
       text-indent: -9999px;
       background-image: image-url("drag.svg");
       background-repeat: no-repeat;
-      background-position: center center;
+      background-position: center 2em;
       cursor: grab;
       width: 24px;
     }
 
-    .project-key-set__key__title,
-    .project-key-set__key__format {
-      width: 35%;
-      input,
-      select {
-        width: 100%;
-      }
+    .project-key-set__key__attributes {
+      width: 100%;
+      margin: 0 1em;
+
+      display: flex;
+      flex-flow: row wrap;
+      justify-content: space-between;
+
+      .project-key-set__key__value {
+        width: 50%;
+        padding-right: 1em;
+
+        input[type='text'], select {
+          width: 100%;
+        }
 
-      .fieldWithErrors {
-        padding: 0;
+        .fieldWithErrors {
+          padding: 0;
+        }
       }
     }
 
     .project-key-set__key__remove-question {
       padding-top: 1.2em;
+      button { width: max-content; }
     }
   }
 }
diff --git a/app/controllers/alaveteli_pro/projects_controller.rb b/app/controllers/alaveteli_pro/projects_controller.rb
index d4c589aede..93cdbbfbe7 100644
--- a/app/controllers/alaveteli_pro/projects_controller.rb
+++ b/app/controllers/alaveteli_pro/projects_controller.rb
@@ -141,7 +141,11 @@ def project_params
     when 'edit_key_set', 'update_key_set'
       params.fetch(:project, {}).permit(
         key_set_attributes: [
-          :id, keys_attributes: %i[id title format order _destroy]
+          :id, keys_attributes: [
+            :id, :title, :format, :order, :_destroy, options: [
+              :select_allow_blank, :select_allow_muliple, { select_options: [] }
+            ]
+          ]
         ]
       )
     when 'edit_contributors', 'update_contributors'
diff --git a/app/controllers/projects/extracts_controller.rb b/app/controllers/projects/extracts_controller.rb
index 9cc041ab24..1014ebb90e 100644
--- a/app/controllers/projects/extracts_controller.rb
+++ b/app/controllers/projects/extracts_controller.rb
@@ -71,7 +71,7 @@ def find_info_request
 
   def extract_params
     params.require(:extract).permit(
-      :dataset_key_set_id, values_attributes: [:dataset_key_id, :value]
+      :dataset_key_set_id, values_attributes: [:dataset_key_id, :value, value: []]
     )
   end
 
diff --git a/app/javascript/controllers/projects/key_set/select_controller.js b/app/javascript/controllers/projects/key_set/select_controller.js
new file mode 100644
index 0000000000..11b02b356a
--- /dev/null
+++ b/app/javascript/controllers/projects/key_set/select_controller.js
@@ -0,0 +1,24 @@
+import { Controller } from "@hotwired/stimulus";
+import { streamUpdate } from "helpers/stream_update";
+
+export default class extends Controller {
+  static targets = ["newInput"];
+  static values = { name: String };
+
+  addOption(event) {
+    event.preventDefault();
+
+    const newValue = this.newInputTarget.value;
+    if (!newValue) return;
+
+    const form = this.element.closest("form");
+    streamUpdate(form, { [this.nameValue]: newValue });
+  }
+
+  removeOption(event) {
+    event.preventDefault();
+
+    const li = event.target.closest("li");
+    if (li) li.remove();
+  }
+}
diff --git a/app/javascript/controllers/projects/key_set_controller.js b/app/javascript/controllers/projects/key_set_controller.js
index 483161623e..cd63b811de 100644
--- a/app/javascript/controllers/projects/key_set_controller.js
+++ b/app/javascript/controllers/projects/key_set_controller.js
@@ -26,6 +26,10 @@ export default class extends Controller {
     streamUpdate(this.element);
   }
 
+  updateKey(event) {
+    streamUpdate(this.element);
+  }
+
   updateOrder() {
     this.element
       .querySelectorAll('[name*="[order]"]')
diff --git a/app/models/dataset/key.rb b/app/models/dataset/key.rb
index f48db23ce0..2d4aef091f 100644
--- a/app/models/dataset/key.rb
+++ b/app/models/dataset/key.rb
@@ -1,5 +1,5 @@
 # == Schema Information
-# Schema version: 20210114161442
+# Schema version: 20240926164308
 #
 # Table name: dataset_keys
 #
@@ -10,6 +10,7 @@
 #  order              :integer
 #  created_at         :datetime         not null
 #  updated_at         :datetime         not null
+#  options            :jsonb
 #
 
 ##
@@ -24,6 +25,7 @@ class Dataset::Key < ApplicationRecord
 
   FORMATS = {
     text: { title: _('Text'), regexp: /\A.*\z/m },
+    select: { title: _('Select'), regexp: /\A.*\z/m },
     numeric: { title: _('Numeric'), regexp: /\A[0-9,%\+\-\s]*\z/ },
     boolean: { title: _('Yes/No'), regexp: /\A(0|1)\z/ }
   }.freeze
@@ -40,4 +42,16 @@ def self.format_options
   def format_regexp
     FORMATS[format.to_sym][:regexp]
   end
+
+  def select_options
+    options.fetch('select_options', [])
+  end
+
+  def select_allow_blank?
+    options.fetch('select_allow_blank', '0').to_i == 1
+  end
+
+  def select_allow_muliple?
+    options.fetch('select_allow_muliple', '0').to_i == 1
+  end
 end
diff --git a/app/models/dataset/value.rb b/app/models/dataset/value.rb
index 735b99a3b0..c1488009cb 100644
--- a/app/models/dataset/value.rb
+++ b/app/models/dataset/value.rb
@@ -29,6 +29,15 @@ def title
     key.title
   end
 
+  def value=(new_value)
+    case key.format
+    when 'select'
+      super(Array(new_value).reject(&:blank?).join(', '))
+    else
+      super
+    end
+  end
+
   def mapped_value
     case key.format
     when 'boolean'
diff --git a/app/views/alaveteli_pro/projects/_key_set.html.erb b/app/views/alaveteli_pro/projects/_key_set.html.erb
index 71a242ca1d..aa8184285f 100644
--- a/app/views/alaveteli_pro/projects/_key_set.html.erb
+++ b/app/views/alaveteli_pro/projects/_key_set.html.erb
@@ -1,29 +1,39 @@
-<%= f.fields_for :key_set, @key_set do |key_set_fields| %>
-  <%= key_set_fields.fields_for :keys, @keys do |key_fields| %>
-    <div class="row project-key-set__key<% if key_fields.object.marked_for_destruction? %> project-key-set__key--removed<% end %>">
+<%= form.fields_for :key_set, @key_set do |key_set_fields| %>
+  <%= key_set_fields.fields_for :keys, @keys do |f| %>
+    <% key = f.object %>
+    <div class="row project-key-set__key<% if key.marked_for_destruction? %> project-key-set__key--removed<% end %>">
       <div class="project-key-set__key__drag-handle">
-        <%= key_fields.hidden_field :order %>
+        <%= f.hidden_field :order %>
         Drag to reorder
       </div>
 
-      <div class="project-key-set__key__title">
-        <%= key_fields.label :title %>
-        <%= key_fields.text_field :title, autocomplete: false %>
-      </div>
+      <div class="project-key-set__key__attributes">
+        <div class="project-key-set__key__value">
+          <%= f.label :title %>
+          <%= f.text_field :title, autocomplete: 'off' %>
+        </div>
+
+        <div class="project-key-set__key__value">
+          <%= f.label :format %>
+          <%= f.select :format,
+            options_for_select(
+              Dataset::Key.format_options,
+              key.format
+            ),
+            {},
+            data: { action: 'change->projects--key-set#updateKey' },
+            autocomplete: 'off' %>
+        </div>
 
-      <div class="project-key-set__key__format">
-        <%= key_fields.label :format %>
-        <%= key_fields.select :format,
-          options_for_select(
-            Dataset::Key.format_options,
-            key_fields.object.format
-          ), {}, autocomplete: false %>
+        <% if lookup_context.exists?("alaveteli_pro/projects/_#{key.format}_key") %>
+          <%= render partial: "alaveteli_pro/projects/#{key.format}_key",
+                    locals: { form: f, key: key } %>
+        <% end %>
       </div>
 
       <div class="project-key-set__key__remove-question">
-        <%= key_fields.hidden_field :_destroy %>
-        <%= link_to _('Remove question'), nil, class: 'button-tertiary',
-          data: { action: 'click->projects--key-set#removeKey' } %>
+        <%= f.hidden_field :_destroy %>
+        <%= button_tag _('Remove question'), class: 'button-tertiary', data: { action: 'click->projects--key-set#removeKey' } %>
       </div>
     </div>
   <% end %>
diff --git a/app/views/alaveteli_pro/projects/_select_key.html.erb b/app/views/alaveteli_pro/projects/_select_key.html.erb
new file mode 100644
index 0000000000..a60b9947fe
--- /dev/null
+++ b/app/views/alaveteli_pro/projects/_select_key.html.erb
@@ -0,0 +1,41 @@
+<%= form.fields_for :options, key.options do |f| %>
+  <div class="project-key-set__key__value">
+    <%= f.label :select_allow_blank do %>
+      <%= f.check_box :select_allow_blank, checked: key.select_allow_blank?, autocomplete: 'off' %>
+      <%= _('Allow blank') %>
+    <% end %>
+  </div>
+
+  <div class="project-key-set__key__value">
+    <%= f.label :select_allow_muliple do %>
+      <%= f.check_box :select_allow_muliple, checked: key.select_allow_muliple?, autocomplete: 'off' %>
+      <%= _('Allow muliple') %>
+    <% end %>
+  </div>
+
+  <%= content_tag(:div, class: "project-key-set__key__value", data: {
+    controller: "projects--key-set--select",
+    projects__key_set__select_name_value: "#{f.object_name}[select_options][]"
+  }) do %>
+    <%= f.label :select_options, _('Options') %>
+    <ul>
+      <% key.select_options.each_with_index do |option, index| %>
+        <li>
+          <%= option %>
+          <%= hidden_field_tag "#{f.object_name}[select_options][]", option %>
+          <%= button_tag class: 'button-unstyled', data: { action: 'click->projects--key-set--select#removeOption' } do %>
+            <%= _('Remove') %>
+          <% end %>
+        </li>
+      <% end %>
+    </ul>
+    <div class="row collapse postfix-radius">
+      <div class="small-10 columns">
+        <%= text_field_tag "select_option", nil, data: { projects__key_set__select_target: 'newInput' } %>
+      </div>
+      <div class="small-2 columns">
+        <%= button_tag _('Add'), class: 'button-tertiary postfix', data: { action: 'click->projects--key-set--select#addOption' } %>
+      </div>
+    </div>
+  <% end %>
+<% end %>
diff --git a/app/views/alaveteli_pro/projects/edit_key_set.html.erb b/app/views/alaveteli_pro/projects/edit_key_set.html.erb
index 2c92547c7f..8b9d8da037 100644
--- a/app/views/alaveteli_pro/projects/edit_key_set.html.erb
+++ b/app/views/alaveteli_pro/projects/edit_key_set.html.erb
@@ -20,13 +20,11 @@
         <%= hidden_field_tag :step, current_step %>
 
         <div id="project-key-set" data-projects--key-set-target="keySet">
-          <%= render partial: 'key_set', locals: { f: f } %>
+          <%= render partial: 'key_set', locals: { form: f } %>
         </div>
 
         <div>
-          <%= link_to _('Add question'), nil, class: 'button-tertiary', data: {
-            action: 'click->projects--key-set#addKey'
-          } %>
+          <%= button_tag _('Add question'), class: 'button-tertiary', data: { action: 'click->projects--key-set#addKey' } %>
         </div>
 
         <div class="form_button">
diff --git a/app/views/alaveteli_pro/projects/update_key_set.turbo_stream.erb b/app/views/alaveteli_pro/projects/update_key_set.turbo_stream.erb
index b915ba316c..ecbffe8880 100644
--- a/app/views/alaveteli_pro/projects/update_key_set.turbo_stream.erb
+++ b/app/views/alaveteli_pro/projects/update_key_set.turbo_stream.erb
@@ -1,6 +1,6 @@
 <%= form_for @project, html: { id: 'temp' } do |f| %>
   <div id="project-key-set">
-    <%= turbo_stream.update 'project-key-set', partial: 'key_set', locals: { f: f } %>
+    <%= turbo_stream.update 'project-key-set', partial: 'key_set', locals: { form: f } %>
   </div>
 <% end %>
 
diff --git a/app/views/projects/dataset/keys/_select_key.html.erb b/app/views/projects/dataset/keys/_select_key.html.erb
new file mode 100644
index 0000000000..cfebb4a910
--- /dev/null
+++ b/app/views/projects/dataset/keys/_select_key.html.erb
@@ -0,0 +1,4 @@
+<div class="dataset-key">
+  <%= f.label :value, key.title %>
+  <%= f.select :value, key.select_options, { include_blank: key.select_allow_blank? }, multiple: key.select_allow_muliple? %>
+</div>
diff --git a/db/migrate/20240926164308_add_options_to_dataset_key.rb b/db/migrate/20240926164308_add_options_to_dataset_key.rb
new file mode 100644
index 0000000000..2ef98b5b0d
--- /dev/null
+++ b/db/migrate/20240926164308_add_options_to_dataset_key.rb
@@ -0,0 +1,5 @@
+class AddOptionsToDatasetKey < ActiveRecord::Migration[7.0]
+  def change
+    add_column :dataset_keys, :options, :jsonb, default: {}
+  end
+end
diff --git a/doc/CHANGES.md b/doc/CHANGES.md
index 116e1ab02d..d23e713bb7 100644
--- a/doc/CHANGES.md
+++ b/doc/CHANGES.md
@@ -2,6 +2,7 @@
 
 ## Highlighted Features
 
+* Add project dataset question "select" format (Graeme Porteous)
 * Fix script/mailin when multiple EXCEPTION_NOTIFICATIONS_TO addresses are
   specified (Graeme Porteous)
 * Add example logrotate configuration (Graeme Porteous)
diff --git a/spec/factories/dataset_keys.rb b/spec/factories/dataset_keys.rb
index 8af52b242f..3a39856d12 100644
--- a/spec/factories/dataset_keys.rb
+++ b/spec/factories/dataset_keys.rb
@@ -1,5 +1,5 @@
 # == Schema Information
-# Schema version: 20210114161442
+# Schema version: 20240926164308
 #
 # Table name: dataset_keys
 #
@@ -10,6 +10,7 @@
 #  order              :integer
 #  created_at         :datetime         not null
 #  updated_at         :datetime         not null
+#  options            :jsonb
 #
 
 FactoryBot.define do
@@ -24,6 +25,10 @@
       format { 'text' }
     end
 
+    trait :select do
+      format { 'select' }
+    end
+
     trait :numeric do
       format { 'numeric' }
     end
diff --git a/spec/models/dataset/key_spec.rb b/spec/models/dataset/key_spec.rb
index e266abadb4..8352caf8b4 100644
--- a/spec/models/dataset/key_spec.rb
+++ b/spec/models/dataset/key_spec.rb
@@ -1,5 +1,5 @@
 # == Schema Information
-# Schema version: 20210114161442
+# Schema version: 20240926164308
 #
 # Table name: dataset_keys
 #
@@ -10,6 +10,7 @@
 #  order              :integer
 #  created_at         :datetime         not null
 #  updated_at         :datetime         not null
+#  options            :jsonb
 #
 
 require 'spec_helper'
@@ -63,6 +64,8 @@
       is_expected.not_to be_valid
       key.format = 'text'
       is_expected.to be_valid
+      key.format = 'select'
+      is_expected.to be_valid
       key.format = 'numeric'
       is_expected.to be_valid
       key.format = 'boolean'
@@ -75,7 +78,8 @@
 
     it 'returns title/format key hash' do
       is_expected.to eq(
-        { 'Text' => :text, 'Numeric' => :numeric, 'Yes/No' => :boolean }
+        { 'Text' => :text, 'Select' => :select, 'Numeric' => :numeric,
+          'Yes/No' => :boolean }
       )
     end
   end
@@ -88,6 +92,11 @@
       it { is_expected.to eq described_class::FORMATS[:text][:regexp] }
     end
 
+    context 'select format' do
+      let(:key) { FactoryBot.build(:dataset_key, :select) }
+      it { is_expected.to eq described_class::FORMATS[:select][:regexp] }
+    end
+
     context 'numeric format' do
       let(:key) { FactoryBot.build(:dataset_key, :numeric) }
       it { is_expected.to eq described_class::FORMATS[:numeric][:regexp] }
diff --git a/spec/models/dataset/value_spec.rb b/spec/models/dataset/value_spec.rb
index 938a056309..a33c42758f 100644
--- a/spec/models/dataset/value_spec.rb
+++ b/spec/models/dataset/value_spec.rb
@@ -81,4 +81,45 @@ def invalid(value_to_test)
       end
     end
   end
+
+  describe 'value=' do
+    context 'when format is a select' do
+      before do
+        value.key = FactoryBot.build(:dataset_key, :select)
+      end
+
+      it 'accept an array' do
+        value.value = %w[a b]
+        expect(value.value).to eq('a, b')
+      end
+
+      it 'ignores empty array values' do
+        value.value = %w[a] + [nil] + %w[c]
+        expect(value.value).to eq('a, c')
+      end
+
+      it 'accepts as string' do
+        value.value = 'a'
+        expect(value.value).to eq('a')
+      end
+    end
+  end
+
+  describe 'mapped_value' do
+    context 'when format is a boolean' do
+      before do
+        value.key = FactoryBot.build(:dataset_key, :boolean)
+      end
+
+      it 'returns No for value 0' do
+        value.value = 0
+        expect(value.mapped_value).to eq('No')
+      end
+
+      it 'returns Yes for value 1' do
+        value.value = 1
+        expect(value.mapped_value).to eq('Yes')
+      end
+    end
+  end
 end