When I was younger, I was very athletic and I always loved sports and physical things.

I don't feel isolated on a film set. In a way you do because you don't really mix with the outside world; you're just sort of working non-stop for a few months, but you've got so many people around you.

If I'm in the middle of a take and I start to think about what I'm doing, I just mess up and I have to stop and so I find that for me, you really need to trust your instinct.

I will always have a child in me. That is what Pete Jackson has got, what a lot of the directors I have worked with have. It is about knowing how to have fun and that is something I always want to hold on to.

I think acting is something that is within you. It's a very natural thing for me. It comes from myself, really.

I was 12 and I remember every­thing. I mean, I had done two films before that. The first was actually with Amy Heckerling. It was so brilliant to work with her on my first film. Atonement was the third one I'd done, and I remember how it felt to arrive on set every day. I remember how it felt to get my wig off at the end of the day. I remember how hot it was.

My whole life I try to make into a comedy, so it would be nice to see that onscreen.