Continuity mistake: Throughout the first series Ben and Susan's bedroom had the window on the left of the screen and the bathroom on the right. In the second series onwards the bathroom and the window have mysteriously swapped around. Also the entire layout of the house changes dramaticly.
Add timeDavid Hutchinson
Continuity mistake: In series 4 episode 9, "Sitting Targets", Nick is going for a stroll on the roof. At one point he says about leaving the hands free. He then supposedly slips and grabs on with 1 hand. But he used 4 fingers to stop him falling. That is not possible.
Add timeA Demon