Tim Burton insists that his adaptation of Roald Dahl's Charlie And The Chocolate Factory is closer to the book than the 1971 version starring Gene Wilder.

He told Empire magazine: "I know a lot of people love it (Willy Wonka), but I found the movie to be quite disturbing.

"Also I don't feel the same way about that movie as I did about Planet of the Apes and so I don't feel the personal pressure that I did on Apes. We tried to keep in the spirit of the book."

Johnny Depp, who will play the factory owner, added: "Tim's sticking much closer to the book, in Tim's own particular way."