After more than a decade onscreen, the "Harry Potter" franchise will end July 15. The cast and crew had a big, sob-inducing farewell Wednesday at the London premiere of "Harry Potter and the Deathly Hallows, Part 2." Amidst the sad goodbyes and constant cheering of fans, MTV UK caught up with "Potter" scribe J.K. Rowling to ask about her experiences turning her novels into films.

"Hundreds of people have been involved," Rowling said. "There's not one of them I don't think was indispensible and phenomenal. The most talented groups of people you could've found, and I just love them. The idea I won't be able to go down to Leavesden and visit anymore is just sad."

Though Rowling joked several times throughout the night that she would return to "Potter" — "You know what? Maybe I'll just write another one," she teased — she also said she has some other projects on the horizon. She was most likely referring to the same one she talked about in February, telling BBC News she was "writing hard."

"I'm writing, and I've done quite a lot since finishing 'Harry,' " she said. "I also felt I wanted the last film out of the way before I made any moves on the publishing front. 'Harry' is so huge and I suppose my involvement with the world has still been quite intense. This feels like a new beginning to me."

Since being released, the books have sold more than 450 million copies, and the films have grossed about $6.37 billion. Rowling told MTV UK she didn't start out writing expecting this sort of success, and that's not the way she measures the success of her books: She measures it by the way it has affected her readers. "Nothing makes me prouder ever than to meet a child or the parent of a child who says he/she never read before 'Harry Potter,' " Rowling said. "Nothing makes me prouder than that."

We're streaming live from the red carpet at the New York premiere of "Harry Potter and the Deathly Hallows, Part 2" on Monday, July 11, at 4:30 p.m. ET. Visit MTV.com to watch interviews with the stars and see the winner of the "Harry Potter" World Cup announced live. Tweet your questions for the cast @MTVNews using the hashtag #AskPotter.

Check out everything we've got on "Harry Potter and the Deathly Hallows, Part 2."

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