When Ives (Ken Jones) is running into the church there's a loose belt at the back of him and his trousers pulled up... when he gets into the church (which would have been shot later on videotape in front of an audience) his trousers are down and there's no sign of his belt.
When Ives runs into the church, the prisoner "Dylan" bumps into a pillar which visibly moves.
The artificial backdrop to the meeting room where the prisoners assemble is notably fake.
In the first exterior shot of the episode, raindrops can be seen on the frame, clearly having landed on the camera.