I've got four kids to feed and a wife to provide for. It's a worry but a great responsibility as well and one I relish.

Mike Leigh taught me about making choices - as an actor, you choose between being honest and clever, and with Mike, it's always about being honest. I learned how to behave on a film set from Jim Broadbent. He was a great example of someone with a fantastic career who kept his feet on the ground.

The trick to acting is not to show off; it's to think the thoughts of the character. I was lucky because when I started acting, it was doing jobs above pubs. I learned to act in anonymity, so by the time people saw me, I knew what I was doing. I was crap for years, but no one saw me being crap. It's a trade you learn.

I've never played a gay character on screen, so that would be interesting. I've never played a gay character, and that would fascinate me because I'm not gay, so that would interest me.

I sometimes think if I had gone to Oxford or Cambridge and looked like a handsome young guy who could be in an Evelyn Waugh novel or something, I'd be a massive movie star. But there's a longevity to what I do. It's more reliable. Someone isn't deciding that I'm the next big thing.

When I think of character actors, I think of Spencer Tracy; I think of Gene Hackman, Robert Duvall. When I was a young lad watching films, my eyes were on them - watching 'On the Waterfront,' my eyes are on Rod Steiger and Karl Malden, not on Brando.

My business is not to show anybody anything; my job is just to do it.