Smuggler Films has set screenwriter Louis Mellis to write The Princess' Gangster, about the true story of Princess Margaret's affair with the gangster-turned-movie-tough-guy John Bindon in the late '60s.

According to The Hollywood Reporter, Patrick Milling Smith said that Mellis' tough-talking crime tales such as Sexy Beast and the current 44 Inch Chest, made him the perfect match for the material.

"We needed someone who could give us an authentic voice, because Bindon, who could break your legs but who was also a mini-celebrity, was a force of nature. He was a real raconteur and full-on entertainer. There aren't many people who can inhabit characters like that and make then amusing, but Louis definitely can."

No production date has been set.