There was actually a camera on your face. I don't know so much about the animation process but the camera was in our face so it could get expressions from our faces that would eventually arrive on the gnomes. It almost felt like you were cheating at times because it was a wee bit too much fun. You were in that box on your own. Kelly [Asbury] was in Toronto, I was in LA, so I was just on my own. I thought: "I can't be getting paid for this as well!"

I know what I look like. I'm not a babe who's automatically going to be the leading-lady type. I think I would always be cast as the friend. I probably tend to look crap more often than I look good. I like messing around and pulling funny faces and doing funny walks.

Americans are so direct. They'd ask me, 'What's your five-year plan? Do you have a five-year plan?' I don't know what I'm having for my tea tonight let alone a five-year plan.

Well, I'd never done an animated movie before, which is why I was so excited about doing it. It was one of the little boxes as an actor that I wanted to tick off. I wanted to do an animated film. So, after my mum got over the fact that I was never going to play Shrek's sister, this was the nearest I was going to get!

My mum Margaret was a single parent, but though life was a bit of a struggle she gave me every encouragement.

I think that children that are acting are always pretty savvy anyway because you're conducting yourself around adults a lot of the time, aren't you? But there is this worry now that children just want to be famous.

It means I wake up to sunshine every morning, and I can afford to drink better wine at night. But I haven't completely sold out to Hollywood.