You've got a part in another high-profile British-based project, Harry Potter and the Goblet of Fire.
Harry Potter was fantastic. It was a great experience. It's a relatively small part, I suppose, that I have. I wasn't there a lot, but I had a great time in it.
Did you work with the leading kids at all?
I worked with Dan [Radcliffe], and I met the other two. They're great. They're fabulous. I think that if I was that age and I was the most famous teenager in the world, I'd just be messed-up. They're so not. They're so good and have their heads screwed on. They're great kids. They're lovely people to be around.
Is your character in the new Potter book?
I don't think that he's in the next book. I think that it's really unlikely, but you never know what J.K. [Rowling] might cook up.
What does your character do?
He's one of Voldemort's cronies. He's one of that team. He's a baddie.