Factual error: After Carlton Leach and his friends have been tricked by the kids, a huge fight starts, and police arrive to break it up, a Ford Sierra is seen in the background. The fight is set in 1982, but the model shown is from the early 1990's - impossible for 1982.
Factual error: In the scene where Carlton is explaining the history of his ICF mates, Eddie is seen downing a pint. The glass is a Carling pint glass, which only got made in the late 90's.