diff --git a/app/main/forms.py b/app/main/forms.py
index f5929ee80..3e38b80a8 100644
--- a/app/main/forms.py
+++ b/app/main/forms.py
@@ -1,7 +1,6 @@
 import weakref
 from datetime import datetime, timedelta
 from itertools import chain
-from operator import itemgetter
 
 import pytz
 from flask_wtf import FlaskForm as Form
@@ -788,7 +787,10 @@ class LetterBranding(StripWhitespaceForm):
         super().__init__(*args, **kwargs)
         self.dvla_org_id.choices = list(sorted(
             choices,
-            key=itemgetter(1),
+            key=lambda choice: (
+                choice[0] != '001',
+                choice[1],
+            ),
         ))
 
     dvla_org_id = RadioField(
diff --git a/tests/app/main/views/test_service_settings.py b/tests/app/main/views/test_service_settings.py
index e7f36b77f..1565e0d81 100644
--- a/tests/app/main/views/test_service_settings.py
+++ b/tests/app/main/views/test_service_settings.py
@@ -2106,11 +2106,11 @@ def test_set_letter_branding_prepopulates(
     for element in {'label', 'input[type=radio]'}:
         assert len(page.select(element)) == 3
 
-    assert normalize_spaces(page.select('label')[0].text) == 'Animal and Plant Health Agency'
-    assert page.select('input')[0]['value'] == '999'
+    assert normalize_spaces(page.select('label')[0].text) == 'HM Government'
+    assert page.select('input')[0]['value'] == '001'
 
-    assert normalize_spaces(page.select('label')[1].text) == 'HM Government'
-    assert page.select('input')[1]['value'] == '001'
+    assert normalize_spaces(page.select('label')[1].text) == 'Animal and Plant Health Agency'
+    assert page.select('input')[1]['value'] == '999'
 
     assert normalize_spaces(page.select('label')[2].text) == 'Land Registry'
     assert page.select('input')[2]['value'] == '500'