Episode #1.8 - S1-E8
Factual error: When the bullion van leaves the yard a 1995 N reg Rover 600 is parked on the left hand side of the road, before Ray drives off in his Granada. In 1982 the Rover 600 was not even on the drawing board.
Episode #1.1 - S1-E1
Factual error: Souvenir by OMD was not released until 04/08/81. But the date for this episode was July 1981.
Episode #1.4 - S1-E4
Factual error: A man in glasses is sitting in the rear seat of a car with "Lexus" on the window. The first Lexus was 1989.
Answer: Have you finished watching the entire series? I don't think it's fair to answer this for someone who hasn't.