Mrs Sprott calls Mr Beresford by his real name even though she is only meant to know him as Mr Meadows.
When Denim runs down the stairs, into the tunnel, he picks up a small tubular shaped flashlight. Once in the tunnel he shines a much bigger one.
In the scene with the motorbike, it is raining heavily in the background, but Tommy and Carl, standing talking in the open, remain completely dry.