JK Rowling said she has finished writing books for the Harry Potter series, but has not ruled out future films. "It is my baby and if I want to bring it out to play again I will,” the author said at Harry Potter and the Deathly Hallows: Part 2 premiere.

During an emotional speech to fans, Rowling said she would “never say never” to more films, raising the hopes of Potter fans around the world.

"I don’t think the end of the story happens tonight because each and every person who will see this film will carry this story with them through the rest of their lives,” said actor Daniel Radcliffe, who has played the leading role of Harry since he was 11.

The last film in the series premiered yesterday in London, where thousands of fans gathered around Trafalgar Square in the hopes of seeing their favorite cast members.

The Harry Potter stars walked down a red carpet that stretched from Trafalgar Square to Leicester Square, spending nearly three hours signing autographs for fans, many of whom spent days camping out and wore wizard-inspired costumes.

A tearful Emma Watson, who plays Hermione Granger in the series, said: "It’s overwhelming to try to find the words to say what I want to say, but I have been so privileged to play this role and be a part of these films."

"I’ve had the most amazing 10 years of my life. Thank you so much," she said to fans.

Harry Potter And The Deathly Hallows: Part 2 is released on 15 July.