At the beginning of the title sequence for series 2 (first seen in this episode), we can see a roulette wheel. However, at the beginning of the shot, there are two balls visible, and the one which falls from the top of the shot is obviously painted in and merges with the second.
When Ally Fraser leaves Newcastle Airport, a camera reflection clearly visible when taxi driver opens his door.
Cameraman reflected on the back of Jaguar's chrome wing mirror when Dennis drives it up to Ally's office.