The most famous British gangsters are arguably the Kray twins (Ronnie and Reggie), notorious East London crime lords from the 1950s-60s who achieved celebrity status, alongside rivals like the Richardson Gang (including enforcer "Mad" Frankie Fraser) and figures like Billy Hill, all dominating London's underworld through violence, extortion, and protection rackets before their fall and imprisonment. The Kray Twins (Ronnie & Reggie): Who: Identical twins controlling London's East End crime, known