When you are doing endurance swimming you just need to take in as many carbs as possible to put on as much weight as you can. Basically you can eat whatever you want, which can be quite fun. Everything is guilt-free.

Children's books are often seen as the poor relation of literature. But children are just as demanding as adult readers, if not more so. I should know. I'm a children's writer myself.

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.

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.

I don't know what I'll be like when I'm 60. I already have the traits of a retired gentleman.

I used to have a silk dressing gown an uncle bought in Japan and when I came downstairs in it, my dad used to call me Davinia. There was never embarrassment about that kind of thing. My sister used to dress me up a lot. She thought I was a little doll.

When I was a child I devoured every book I could get my hands on. I loved losing myself in colourful and dramatic stories - and my absolute favourite was 'Charlie And The Chocolate Factory.' Everything about it electrified me, and when I re-read Roald Dahl's books as an adult it surprised me.