The robbery at the beginning of this movie was inspired by the real-life Baker Street robbery of 1971. Elements in the film from the real-life bank robbery include: the robbers tunneling in from the store next door, the looting of the safety deposit boxes, a spotter on the roof across the street, and their communications being picked by local radio and scanning equipment.
Mel Smith: Pushing past Mason (Kevin McNally) at the train station while he is trying to explain to the ticket collector why he doesn't have a ticket.