Continuity mistake: When Regan arrives at the block of flats to speak to Biggleswade's parents, the squad car parks between a blue Ford Cortina and a white Fiat 128 parked a distance behind. In the next shot from the flats walkway looking down the white Fiat is parked right behind the squad car.
Character mistake: After Regan and co jump out the back of the police van and a punch up ensues, Brian Blessed quietly walks away to a white car to make his escape. Regan clocks this and goes after him. Brian Blessed lashes out and pushes Regan away, but growls "Carter..." instead.
Suggested correction: Brian Blessed growls 'cozzer', not 'Carter'.
What does cozzer mean?
"Cozzer" means "copper."