The French prison drama A Prophet , a hit at the Cannes Film Festival last May, where it received the second-place Grand Prize, moved into the winner's circle on Wednesday as it received the London Film Festival's first Best Film award. Actress Anjelica Huston, who served on the festival jury, called the movie "an instant classic and a masterpiece." This was the first year of competition at the London festival, which is attempting to boost its profile in an effort to compete with the more famous European festivals in Cannes, Berlin, and Venice. The festival is due to close tonight (Thursday) with a screening of Sam Taylor-Wood's Nowhere Boy , about the early life of John Lennon.