What is the most successful british director editor screenwriter producer composer casting director stuntman head of studio cameraman and actor ever?

Determining the "most successful" British filmmaker can be subjective, but one strong contender is Sir Alfred Hitchcock, renowned for his groundbreaking work as a director and producer in the thriller genre. His films, such as "Psycho" and "Vertigo," have had a lasting impact on cinema and influenced countless filmmakers. While he wasn't directly involved in all roles like editing or composing, his creative vision and storytelling mastery have solidified his legacy as one of the greatest in film history. Other notable figures include David Lean and more contemporary directors like Christopher Nolan, each Excelling in various aspects of filmmaking.