diff --git a/tests/app/main/views/test_service_settings.py b/tests/app/main/views/test_service_settings.py
index f26fcf125..ac0ca5cf8 100644
--- a/tests/app/main/views/test_service_settings.py
+++ b/tests/app/main/views/test_service_settings.py
@@ -4753,27 +4753,10 @@ def test_update_service_organisation_does_not_update_if_same_value(
 
 
 @pytest.mark.parametrize('organisation_type, expected_options', (
-    ('central', [
-        ('something_else', 'Something else'),
-    ]),
-    ('local', [
-        ('something_else', 'Something else'),
-    ]),
     ('nhs_central', [
         ('nhs', 'NHS'),
         ('something_else', 'Something else'),
     ]),
-    ('nhs_local', [
-        ('nhs', 'NHS'),
-        ('something_else', 'Something else'),
-    ]),
-    ('nhs_gp', [
-        ('nhs', 'NHS'),
-        ('something_else', 'Something else'),
-    ]),
-    ('emergency_service', [
-        ('something_else', 'Something else'),
-    ]),
     ('other', [
         ('something_else', 'Something else'),
     ])
@@ -4818,21 +4801,10 @@ def test_email_branding_request_page_when_no_branding_is_set(
 
 
 @pytest.mark.parametrize('organisation_type, expected_options', (
-    ('central', None),
-    ('local', None),
     ('nhs_central', [
         ('nhs', 'NHS'),
         ('something_else', 'Something else'),
     ]),
-    ('nhs_local', [
-        ('nhs', 'NHS'),
-        ('something_else', 'Something else'),
-    ]),
-    ('nhs_gp', [
-        ('nhs', 'NHS'),
-        ('something_else', 'Something else'),
-    ]),
-    ('emergency_service', None),
     ('other', None),
 ))
 def test_letter_branding_request_page_when_no_branding_is_set(
diff --git a/tests/app/utils/test_branding.py b/tests/app/utils/test_branding.py
new file mode 100644
index 000000000..2dfab64f3
--- /dev/null
+++ b/tests/app/utils/test_branding.py
@@ -0,0 +1,28 @@
+import pytest
+
+from app.models.service import Service
+from app.utils.branding import get_available_choices
+
+
+@pytest.mark.parametrize('branding_type', ['email', 'letter'])
+@pytest.mark.parametrize('org_type, existing_branding, expected_options', [
+    ('central', None, []),
+    ('local', None, []),
+    ('nhs_central', None, [('nhs', 'NHS')]),
+    ('nhs_local', None, [('nhs', 'NHS')]),
+    ('nhs_gp', None, [('nhs', 'NHS')]),
+    ('emergency_service', None, []),
+    ('other', None, []),
+])
+def test_get_available_choices_no_org(
+    service_one,
+    branding_type,
+    org_type,
+    existing_branding,
+    expected_options,
+):
+    service_one['organisation_type'] = org_type
+    service = Service(service_one)
+
+    options = get_available_choices(service, branding_type=branding_type)
+    assert list(options) == expected_options