The Frightened City

The Frightened City is a 1961 British Neo Noir film about extortion rackets and gang warfare in the West End of London. It stars Sean Connery, who plays a burglar called Paddy Damion. He is lured into a protection racket by oily mobster Harry Foulcher Alfred Marks, in order to support his partner in crime Kenneth Griffith, who is injured in a robbery. However Damion has his wits about him.

Source: Wikipedia