Michael Powell's collaborations with Emeric Pressburger which began during World War II and continued afterward produced some of the best films in Britain in the era, including the greatest ballet film ever made, The Red Shoes. Many would have put Powell on the same level as Alfred Hitchcock or David Lean.
That all changed with the 1960 release of Peeping Tom, which we talk about in this week's Lost in Criterion. A thriller every bit as good as Hitchcock in his prime - released earlier the same year as Psycho, a film it shares many similarities with - Peeping Tom nevertheless wasn't something British audiences were ready for. Maybe that's why Hitchcock was working in America by 1960.