The Sweeney. S2 E9. Stay Lucky, Eh?

Classic British Police TV crime series. Inspector Regan has been trying to bring down notorious gangster, Tony Kirby, (Peter Vaughn). Another angle opens up when Kirby's minions carry out his latest heist... only to be hijacked THEMSELVES at gunpoint by a "face out of nowhere". Kirby, out for the "face", and Regan on Kirby's tail, make for an all-out war!