In the hit 1990 film The Krays, the East End gangsters were portrayed as “identical twins who rose from poverty to power”, “from obscurity to fame” and “from the back streets to the attention of the world”. They were “special” boys, the film claimed, who loved their mother.

But the producer now says he regrets glamorising them and is making another film that will portray the mobsters as they really were.

Ray Burdis said he wants to put the record straight: “They weren’t folk heroes. They were just a pair of cowardly psychopathic bullies, who terrorised the East End of London in the 1960s.”

He said that films such as The Godfather, the Marlon Brando classic about the mafia, had made it fashionable to idolise gangsters.

The Krays, which starred brothers Gary and Martin Kemp in critically acclaimed performances, was a huge box-office success, taking more than £100m globally.

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The new film, which he is writing and directing, is titled Last Kings of London. It will be much darker, depicting swinging 1960s London, “where corruption plagued the police force and crime families ruled the streets”, he said.