Ricky Gervais would have you believe otherwise, but Sacha Baron Cohen is the most successful British comedian in the world.

It's important when you're married not to forget those things you used to do when you were trying to get her to marry you. You can't send flowers and buy gifts then, when you're married, say, 'Right, get my tea on'. That doesn't go down well. So you've got to keep that level of interest going.

People think writing a children's book is something you could do in an afternoon but it's actually really hard.

I think comedy is a bit more international than people credit. I happily watch lots of American shows and American comedy films. If I did a list of the top 10 comedy films in Britain, there's no sense that it would probably be different than yours.

I still enjoy my life, and I feel like I've achieved enough things that if I never did anything again, I'd feel confident that I'd still have made my mark in some way. But maybe the self-loathing bit is the element that makes you strive for more. Makes you strive to be better.

I've done panel shows, which I enjoy, and on those you're recording half-an-hour of TV and sometimes they film for two hours. But with 'Britain's Got Talent,' you're on camera for eight hours, with a large theatre audience watching - and in between you're being filmed for ITV2 as you eat your lunch.

I don't have a fear factor. Well, not much of one. And I'm willing to risk quite a lot - as a comedian, you're always risking a lot. You're risking failure, especially if you're improvising and going on TV shows trying to make comedy out of thin air. That is quite a risky business.