UK: Harry Potter And The Prisoner Of Azkaban – Photocall LONDON – MAY 27: Actors Daniel Radcliffe, Emma Watson and Rupert Grint pose at photocall ahead of Sunday’s UK premiere of “Harry Potter And The Prisoner Of Azkaban” at Number 1 Whitehall Place on May 27, 2004 in London. The film is the third based on cult books by author J.K. Rowling. (Photo by Steve Finn/Getty Images)

UK: Harry Potter And The Prisoner Of Azkaban – Premiere LONDON – MAY 30: (EMBARGOED FOR PUBLICATION IN UK TABLOID NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Emma Watson attends the UK Premiere of “Harry Potter And The Prisoner Of Azkaban” at the Odeon Leicester Square on May 30, 2004 in London. The film is the third celluloid instalment of J K Rowling’s series of books. (Photo by Dave Benett/Getty Images)