The Kray Twins (Reginald "Reggie" and Ronald "Ronnie" - both played by Tom Hardy) were notorious gangsters in London in the 1950s and '60s. Their primary achievement was the level of organisation in their crime. It was a business like anything else. With the front of a nightclub, they ran a plethora of illegal activities all the while hobnobbing with celebrities and politicians alike. Their story has wild elements – right from mental illness (Ronnie was paranoid schizophrenic) to homosexual orgies (with Labour and Tory representation, no less).