Brannigan (1975)

Chicago Police Lieutenant Jim Brannigan is sent to London to escort organized crime boss Ben Larkin back to the United States for extradition. A hard-nosed Irish-American cop with his own way of enforcing the law, Brannigan clashes with the more reserved world of Scotland Yard while trying to navigate an unfamiliar city. As he closes in on his prisoner, Larkin’s hitmen prepare an ambush.