The United Kingdom has had a considerable influence on the history of the cinema. The British directors Alfred Hitchcock, whose film ''Vertigo'' is considered by some critics as the best film of all time, and David Lean are among the most critically acclaimed of all time. Many British actors have achieved international fame and critical success. Some of the most commercially successful films of all time have been produced in the United Kingdom, including two of the highest-grossing film franchises (''Harry Potter'' and ''James Bond''). Ealing Studios has a claim to being the oldest continuously working film studio in the world.