diff --git a/app/notify_client/organisations_api_client.py b/app/notify_client/organisations_api_client.py
index 13e3b774a..467ab6791 100644
--- a/app/notify_client/organisations_api_client.py
+++ b/app/notify_client/organisations_api_client.py
@@ -81,12 +81,6 @@ class OrganisationsClient(NotifyAdminAPIClient):
         data = _attach_current_user({})
         return self.delete(endpoint, data)
 
-    def is_organisation_name_unique(self, org_id, name):
-        return self.get(
-            url="/organisations/unique",
-            params={"org_id": org_id, "name": name}
-        )["result"]
-
     def get_services_and_usage(self, org_id, year):
         return self.get(
             url=f"/organisations/{org_id}/services-with-usage",
diff --git a/app/notify_client/service_api_client.py b/app/notify_client/service_api_client.py
index f610700a9..9dde58ffd 100644
--- a/app/notify_client/service_api_client.py
+++ b/app/notify_client/service_api_client.py
@@ -319,14 +319,6 @@ class ServiceAPIClient(NotifyAdminAPIClient):
         self._delete_template_cache_for_service(service_id)
         return self.post(endpoint, data=data)
 
-    def is_service_name_unique(self, service_id, name, email_from):
-        """
-        Check that the service name or email from are unique across all services.
-        """
-        endpoint = "/service/unique"
-        params = {"service_id": service_id, "name": name, "email_from": email_from}
-        return self.get(url=endpoint, params=params)["result"]
-
     # Temp access of service history data. Includes service and api key history
     def get_service_history(self, service_id):
         return self.get('/service/{0}/history'.format(service_id))['data']
diff --git a/tests/app/main/views/test_service_settings.py b/tests/app/main/views/test_service_settings.py
index 6b565743d..11cf90c28 100644
--- a/tests/app/main/views/test_service_settings.py
+++ b/tests/app/main/views/test_service_settings.py
@@ -539,7 +539,6 @@ def test_should_show_service_name_with_no_prefixing(
 def test_should_not_hit_api_if_service_name_hasnt_changed(
     client_request,
     mock_update_service,
-    mock_service_name_is_unique,
 ):
     client_request.post(
         'main.service_name_change',
diff --git a/tests/conftest.py b/tests/conftest.py
index fda7e4779..69bb391a5 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -549,16 +549,6 @@ def mock_get_detailed_services(mocker, fake_uuid):
     return mocker.patch('app.service_api_client.get_services', return_value=services)
 
 
-@pytest.fixture(scope='function')
-def mock_service_name_is_not_unique(mocker):
-    return mocker.patch('app.service_api_client.is_service_name_unique', return_value=False)
-
-
-@pytest.fixture(scope='function')
-def mock_service_name_is_unique(mocker):
-    return mocker.patch('app.service_api_client.is_service_name_unique', return_value=True)
-
-
 @pytest.fixture(scope='function')
 def mock_get_live_service(mocker, api_user_active):
     def _get(service_id):
@@ -3348,16 +3338,6 @@ def mock_add_user_to_organisation(mocker, organisation_one, api_user_active):
     return mocker.patch('app.user_api_client.add_user_to_organisation', side_effect=_add_user)
 
 
-@pytest.fixture(scope='function')
-def mock_organisation_name_is_not_unique(mocker):
-    return mocker.patch('app.organisations_client.is_organisation_name_unique', return_value=False)
-
-
-@pytest.fixture(scope='function')
-def mock_organisation_name_is_unique(mocker):
-    return mocker.patch('app.organisations_client.is_organisation_name_unique', return_value=True)
-
-
 @pytest.fixture(scope='function')
 def mock_update_organisation(mocker):
     def _update_org(org, **kwargs):