diff --git a/app/main/views/platform_admin.py b/app/main/views/platform_admin.py
index 5f051cf10..1259c7e5c 100644
--- a/app/main/views/platform_admin.py
+++ b/app/main/views/platform_admin.py
@@ -432,6 +432,9 @@ def clear_cache():
             'live-service-and-organisation-counts',
             'organisation-????????-????-????-????-????????????-name',
         ]),
+        ('broadcast', [
+            'service-????????-????-????-????-????????????-broadcast-message-????????-????-????-????-????????????',
+        ]),
     ])
 
     form = ClearCacheForm()
diff --git a/app/models/broadcast_message.py b/app/models/broadcast_message.py
index c5951b152..27106be8e 100644
--- a/app/models/broadcast_message.py
+++ b/app/models/broadcast_message.py
@@ -24,6 +24,7 @@ class BroadcastMessage(JSONModel):
         'template_id',
         'template_name',
         'template_version',
+        'content',
         'service_id',
         'created_by',
         'personalisation',
diff --git a/tests/__init__.py b/tests/__init__.py
index 7fe6663f1..01604ce50 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -650,6 +650,7 @@ def broadcast_message_json(
     approved_by_id=None,
     cancelled_by_id=None,
     areas=None,
+    content=None,
 ):
     return {
         'id': id_,
@@ -659,6 +660,7 @@ def broadcast_message_json(
         'template_id': template_id,
         'template_version': 123,
         'template_name': 'Example template',
+        'content': content or 'This is a test',
 
         'personalisation': {},
         'areas': areas or [
diff --git a/tests/app/main/views/test_platform_admin.py b/tests/app/main/views/test_platform_admin.py
index c75bab7e8..1f1fb9757 100644
--- a/tests/app/main/views/test_platform_admin.py
+++ b/tests/app/main/views/test_platform_admin.py
@@ -689,10 +689,14 @@ def test_clear_cache_shows_form(client_request, platform_admin_user, mocker):
 
 @pytest.mark.parametrize('model_type, expected_calls, expected_confirmation', (
     ('template', [
+        # Returns 101
         call('service-????????-????-????-????-????????????-templates'),
+        # Returns 102
         call('service-????????-????-????-????-????????????-template-????????-????-????-????-????????????-version-*'),
+        # Returns 103
         call('service-????????-????-????-????-????????????-template-????????-????-????-????-????????????-versions'),
-    ], 'Removed 3 template objects from redis'),
+        # 103 shown here because it’s the `max` of the 3 counts
+    ], 'Removed 103 template objects from redis'),
     ('service', [
         call('has_jobs-????????-????-????-????-????????????'),
         call('service-????????-????-????-????-????????????'),
@@ -701,13 +705,16 @@ def test_clear_cache_shows_form(client_request, platform_admin_user, mocker):
         call('service-????????-????-????-????-????????????-template-folders'),
         call('service-????????-????-????-????-????????????-returned-letters-statistics'),
         call('service-????????-????-????-????-????????????-returned-letters-summary'),
-    ], 'Removed 3 service objects from redis'),
+    ], 'Removed 107 service objects from redis'),
     ('organisation', [
         call('organisations'),
         call('domains'),
         call('live-service-and-organisation-counts'),
         call('organisation-????????-????-????-????-????????????-name'),
-    ], 'Removed 3 organisation objects from redis'),
+    ], 'Removed 104 organisation objects from redis'),
+    ('broadcast', [
+        call('service-????????-????-????-????-????????????-broadcast-message-????????-????-????-????-????????????'),
+    ], 'Removed 101 broadcast objects from redis'),
 ))
 def test_clear_cache_submits_and_tells_you_how_many_things_were_deleted(
     client_request,
@@ -718,7 +725,9 @@ def test_clear_cache_submits_and_tells_you_how_many_things_were_deleted(
     expected_confirmation,
 ):
     redis = mocker.patch('app.main.views.platform_admin.redis_client')
-    redis.delete_cache_keys_by_pattern.side_effect = [0, 3, 1, 0, 0, 0, 0, 0]
+    # The way this is set up means the first time `delete_cache_keys_by_pattern`
+    # is called it will return `101`, the second time it will return `102`, etc
+    redis.delete_cache_keys_by_pattern.side_effect = [101, 102, 103, 104, 105, 106, 107, 108, 109]
     client_request.login(platform_admin_user)
 
     page = client_request.post('main.clear_cache', _data={'model_type': model_type}, _expected_status=200)
diff --git a/tests/app/models/test_broadcast_message.py b/tests/app/models/test_broadcast_message.py
index 955fac511..1b9a46124 100644
--- a/tests/app/models/test_broadcast_message.py
+++ b/tests/app/models/test_broadcast_message.py
@@ -34,3 +34,14 @@ def test_simple_polygons(fake_uuid):
         # total coordinates
         [51],
     ]
+
+
+def test_content_comes_from_attribute_not_template(fake_uuid):
+    broadcast_message = BroadcastMessage(broadcast_message_json(
+        id_=fake_uuid,
+        service_id=fake_uuid,
+        template_id=fake_uuid,
+        status='draft',
+        created_by_id=fake_uuid,
+    ))
+    assert broadcast_message.content == 'This is a test'