I never felt I was quite the ticket academically. I always felt I had to put in an enormous amount of effort not to be disappointing. So I worked really hard, but at the time it suited me, because I didn't do very much else.

It's censorship, really. I don't see why it's not okay for somebody under the age of 17 watch someone smoking when they can watch someone have their brains blown out? My son and I were watching an ad on the television the other day. And it said, "Rated R." He said, "What does 'rated R' mean?" I said, "God, I don't know. You can't watch it unless you're over a certain age."

51st State was one that I loved doing because the character was so out there, and in a way I was sad to leave the character behind. I'm afraid I could never be that cool in real life!

It's very difficult to find the time or the money for people to organize rehearsals for some movies. It staggers me how little preparation often goes into these scenes which are difficult and complicated. You think, "God, it's crazy. I've never met this person before and here I am having to work at how to do a whole performance on the set." It was great to have a few days of just talking to Michael [Caine] and Daniel [Barber] and thinking about the characters and the relationship between them before we started shooting.

I want any excuse to come home. My dad is not a spring chicken any more. If anyone says, 'Go buy a postage stamp in London,' I'll go and do it.

In my first few years as an actor, I took one terrible TV job after another. But even as I laughed off my awful roles and made fun of myself to friends, my work made me cringe - I dreaded anyone's seeing it. I was crushed that I wasn't doing anything I was proud of.

I'm just happy to be a film where for once I don't have to worry about my hair, because my managers are always complaining about my hair looking depressing in my movies. Which is true. I mean, it's true.