The popular image that Hollywood is ruined by difficult prima donna actors is nonsense. They're certainly very nice to directors. I can't say the same about producers, who I found difficult, paranoid, and certifiably insane, mostly.

It seems to me that romantic comedies used to be about falling in love, but in recent years they've really become just comedies where the love story is only there as a spine to hang the jokes on.

I can only do it if there's humour, wit, comedy and drama. If you can get audiences laughing and then suddenly turn them to tears... it's a weird way of making a living making people cry, but I think it's very exciting to be able to send audiences on a rollercoaster ride.

I think your 20s are the hardest part of life. I mean, everyone goes on about how hard it is to be a teenager, but actually I think it’s tougher to be in your 20s because you’re expected to be a grownup and expected to earn your own living and be successful and I think you feel like a kid still.

In the States everyone aspires to be middle class. It's so engrained into the American psyche: As long as you work hard you're going to be rich some day. The history of Britain is that if you're born working class, you're going to stay there, although that is changing.

I'm not making films for middle aged journalists, who are mostly men. I make films that hopefully entertain people, where they can learn something about life.

In England we only make films about the working class or the aristocracy.