Sid James is super effective as the powerful and charismatic coach with the wisdom of the ages in his cackle, and Frederick Valk plays an unfortunately super-hammed Italian caricature throughout, at a high pitch, playing the solid cuck.
He is a lousy husband of British noir, about to lose his beautiful wife. It's not an uncommon notion in film noir but here it's happening in the god-awful crummy UK, making their own inimitably crummy boxing movie with a lot of energy and manners.