Rotten to the Core is a 1965 British comedy film directed by John Boulting.
It includes a young Anton Rodgers as the leader of a group of criminals, who attempt to stage an elaborate heist towards the end of the film.
Eric Sykes plays a policeman who attempts to go undercover without much success. (As one character puts it "You can see his flat feet from here".)
Rotten to the Core at the Internet Movie Database
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