Funny Money (1982)

In Las Vegas young Barty Nicholls inadvertently steals a fortune from the Mob and is slashed to death by a limping hood. Later his girlfriend Cass arrives in London with a stack of stolen credit cards looking for Ben Turtle, famed as a credit card king who she needs as a partner in her credit card swindles. Thrown out of a West End hotel for stealing cards, the pair are soon muscled back in by two heavy Minders to sexually perform at a Mob party in front of Mr. Big. Ben and Cass check out with suit cases of Mafia cash then the real funny money begins to flow and the chase is on.