The work I enjoy is when the camera rolls, and I like the work in the moment.

I did have a knack for playing weirdos. There's still sort of this perception of me out there as being this crazy guy.

To be able to do this job in the first place you've got to have a bit of an ego.

I'm not the best audience for that because I'm not a great science-fiction fan. I just never got off on space ships and space costumes, things like that.

I like celluloid, I like film, I like the way that when a movie is projected it sort of breathes a little in the gate. That's the magic of it to me.

And of course I've got kids of my own now, and they love me being in the Harry Potter films. I'm now part of a phenomenon. You become incredibly cool to your kids, and you get a young fan base. So you became the cool dad at school. You're suddenly hip.

It's becoming increasingly harder and harder; there's no such thing as independent film anymore. There aren't any, they don't exist. In the old days you could go and get a certain amount of the budget with foreign sales, now everybody wants a marketable angle.