From IMDb:

'Titanic' Voted Worst Film Ever
Titanic may be the biggest box-office hit of all time, but in Britain it may also be the most despised film of all time. The 1997 film was voted worst film ever by viewers of the BBC show Film 2003 with Jonathan Ross. In second place was Steven Spielberg's sci-fi drama A.I. Rounding out the top five were: Pearl Harbor, Vanilla Sky, and The Blair Witch Project.