The Sweeney.

Jack Regan, a hardened cop who doesn’t play by the rules, is confronted with a criminal from his past. With sidekick George Carter they are put on the case of a jewellery store heist that ends in a killing. But is that killing really an execution in disguise? With pressure from his boss and the fact that Regan is having an affair with that boss’s wife, it’s not going to be easy for him to stay out of trouble.