diff --git a/tests/astrium.py b/tests/astrium.py
deleted file mode 100644
index a3618a23..00000000
--- a/tests/astrium.py
+++ /dev/null
@@ -1,106 +0,0 @@
-import unittest
-from parameterized import parameterized
-
-from utils.test_modes import TestModes
-from utils.channel_access import ChannelAccess
-from utils.ioc_launcher import get_default_ioc_dir
-from utils.testing import skip_if_recsim, skip_if_devsim, parameterized_list
-
-# Device prefix
-DEVICE_PREFIX = "ASTRIUM_01"
-
-IOCS = [
-    {
-        "name": DEVICE_PREFIX,
-        "directory": get_default_ioc_dir("ASTRIUM")
-    },
-]
-
-
-# Can only be set in multiples of 10
-VALID_FREQUENCIES = [20, 140, 280, 0]
-
-VALID_PHASE_DELAYS = [0.0, 0.01, 123.45, 999.99]
-
-
-# Devsim for this device is not a usual lewis emulator but puts the actual IOC into a sort of simulation mode.
-TEST_MODES = [TestModes.RECSIM, TestModes.DEVSIM]
-
-
-class AstriumTests(unittest.TestCase):
-    """
-    Tests for the Astrium Chopper.
-    """
-
-    def setUp(self):
-        self.ca = ChannelAccess(device_prefix=DEVICE_PREFIX, default_timeout=30)
-
-    @parameterized.expand(parameterized_list(VALID_FREQUENCIES))
-    def test_that_WHEN_setting_the_frequency_setpoint_THEN_it_is_set(self, _, value):
-        self.ca.set_pv_value("CH1:FREQ:SP", value)
-        self.ca.assert_that_pv_is("CH1:FREQ", value)
-
-    @parameterized.expand(parameterized_list(VALID_PHASE_DELAYS))
-    def test_that_WHEN_setting_the_phase_setpoint_THEN_it_is_set(self, _, value):
-        self.ca.set_pv_value("CH1:PHASE:SP", value)
-        self.ca.assert_that_pv_is("CH1:PHASE", value)
-
-    @parameterized.expand(parameterized_list(VALID_PHASE_DELAYS))
-    @skip_if_recsim("Behaviour of phase readback not implemented in recsim")
-    def test_that_WHEN_setting_the_phase_setpoint_and_then_speed_THEN_phases_to_the_correct_place(self, _, value):
-        """
-        This test simulates the bug in https://github.com/ISISComputingGroup/IBEX/issues/4123
-        """
-
-        # Arrange - set initial speed and phase
-        old_speed = 10
-        self.ca.set_pv_value("CH1:FREQ:SP", old_speed)
-        self.ca.assert_that_pv_is_number("CH1:FREQ", old_speed)  # Wait for it to get there
-        self.ca.set_pv_value("CH1:PHASE:SP", value)
-        self.ca.assert_that_pv_is_number("CH1:PHASE", value)
-        self.ca.assert_that_pv_is_number("CH1:PHASE:SP:RBV", value)
-
-        # Act - set frequency
-        new_speed = 20
-        self.ca.set_pv_value("CH1:FREQ:SP", new_speed)
-        self.ca.assert_that_pv_is_number("CH1:FREQ", new_speed)  # Wait for it to get there
-
-        # Assert - both the actual phase and the setpoint readback should be correct after setting speed.
-        self.ca.assert_that_pv_is_number("CH1:PHASE", value)
-        self.ca.assert_that_pv_value_is_unchanged("CH1:PHASE", wait=10)
-        self.ca.assert_that_pv_is_number("CH1:PHASE:SP:RBV", value)
-        self.ca.assert_that_pv_value_is_unchanged("CH1:PHASE:SP:RBV", wait=10)
-
-    def test_WHEN_frequency_set_to_180_THEN_actual_setpoint_not_updated(self):
-        sent_frequency = 180
-        self.ca.set_pv_value("CH1:FREQ:SP", sent_frequency)
-        self.ca.assert_that_pv_is_not("CH1:FREQ:SP_ACTUAL", sent_frequency)
-        self.ca.assert_that_pv_is_not("CH1:FREQ", sent_frequency)
-
-    @skip_if_recsim("No state changes in recsim")
-    def test_WHEN_brake_called_THEN_state_is_BRAKE(self):
-        self.ca.set_pv_value("CH1:BRAKE", 1)
-        self.ca.assert_that_pv_is("CH1:STATE", "BRAKE")
-
-    @skip_if_recsim("No state changes in recsim")
-    def test_WHEN_speed_set_THEN_state_is_POSITION(self):
-        self.ca.set_pv_value("CH1:FREQ:SP", 10)
-        self.ca.assert_that_pv_is("CH1:STATE", "POSITION")
-
-    @skip_if_devsim("No backdoor to state in devsim")
-    def test_WHEN_one_channel_state_not_ESTOP_THEN_calibration_disabled(self):
-        self.ca.set_pv_value("CH1:SIM:STATE", "NOT_ESTOP")
-        self.ca.set_pv_value("CH2:SIM:STATE", "E_STOP")
-        # Need to process to update disabled status.
-        # We don't want the db to process when disabled changes as this will write to the device.
-        self.ca.process_pv("CALIB")
-        self.ca.assert_that_pv_is("CALIB.STAT", self.ca.Alarms.DISABLE, timeout=1)
-
-    @skip_if_devsim("No backdoor to state in devsim")
-    def test_WHEN_both_channels_state_ESTOP_THEN_calibration_enabled(self):
-        self.ca.set_pv_value("CH1:SIM:STATE", "E_STOP")
-        self.ca.set_pv_value("CH2:SIM:STATE", "E_STOP")
-        # Need to process to update disabled status.
-        # We don't want the db to process when disabled changes as this will write to the device.
-        self.ca.process_pv("CALIB")
-        self.ca.assert_that_pv_is_not("CALIB.STAT", self.ca.Alarms.DISABLE, timeout=1)