diff --git a/migrations/versions/0361_new_user_bcast_permissions.py b/migrations/versions/0361_new_user_bcast_permissions.py
new file mode 100644
index 000000000..3b25c821c
--- /dev/null
+++ b/migrations/versions/0361_new_user_bcast_permissions.py
@@ -0,0 +1,32 @@
+"""
+
+Revision ID: 0361_new_user_bcast_permissions
+Revises: 0360_remove_sched_notifications
+Create Date: 2021-06-30 11:42:32.780734
+
+"""
+from alembic import op
+
+revision = '0361_new_user_bcast_permissions'
+down_revision = '0360_remove_sched_notifications'
+
+
+def upgrade():
+    """
+    Delete all permissions for broadcast service users and invited pending users, apart from 'view_activity'
+    which they always have.
+    """
+    op.execute(
+        "DELETE FROM permissions WHERE permission != 'view_activity' "
+        "and service_id in (select id from services where organisation_id = '38e4bf69-93b0-445d-acee-53ea53fe02df')"
+    )
+    op.execute(
+        "UPDATE invited_users SET permissions = 'view_activity' WHERE status = 'pending' "
+        "and service_id in (select id from services where organisation_id = '38e4bf69-93b0-445d-acee-53ea53fe02df')"
+    )
+
+
+def downgrade():
+    """
+    This change cannot be downgraded since we no longer have access to the original permissions users had.
+    """