Goofs

In the first bank robbery, the robbers drive away from the bank, but in the next shot they are seen approaching the bank again from the opposite direction as the IPO mob divert them down a side street where they are lined up against a wall directly opposite the bank.

When Inspector Parker and the other police officers arrive at Battersea Fun Fair to meet Pearly Gates, their taxis park in front of a generator lorry that was being used for lighting the scenes, and was not associated with the fun fair.