Everyone on the set has a mobile phone, and I found by pushing a few buttons, they could be programmed into different languages. I fixed Robbie's Coltrane to speak in Turkish.

I like the idea of being a youngish parent. So I've got energy to play football even though they'll be better than me by the time they're four.

I might like to be an actor, but there are loads of other things I'm interested in as well, like music and writing and sports. I want to keep my options open.

I take things in better when I'm allowed to talk, and respond, and engage and move around a bit.

I am a frighteningly thorough person.

I certainly want to establish myself as an actor in my own right, rather than being just the actor who plays Harry Potter.

I've been working since I was 9, and I've never known a life without a film set.