Ritchie has cited Quentin Tarantino and Sergio Leone as influences on his work. However, he has stated "just about every film — any good film — that's ever been made has had an influence on me. But then how much of it, I have no idea". He has complimented several films including "The Long Good Friday" (1980), "The Good, the Bad, and the Ugly" (1966), "Seven Samurai" (1954) and "Once Upon a Time in the West" (1968). When asked about the influence of criminals Ronald and Reginald Kray, Ritchie states "It's inevitable ... everything, more or less, of the old-school villainy related back to the Krays at some point. And the Krays were a lot worse than everyone thinks they are. ... And I know what those boys were doing was a hundred times worse than what everyone thought was going on. So it's inevitable that anything that is genuine, and old, and British will somehow have something to do with the Krays".