Much as I loved doing 'The Big Breakfast,' it almost became automatic. I need something to keep my brain ticking over, something that I have to concentrate on.

I did the Kilimanjaro climb a few years ago, then the six-day trek to Machu Picchu in Peru so this bike ride to raise money for Great Ormond Street seemed like the next big challenge.

Young girls look to me as a role model and think I crash diet to keep slim. That's not true, I always eat properly.

After I had the Caesarean, I was told I had really strong stomach muscles and so would heal very quickly. And I did. I was up walking about within three hours. Six days after having her, I was out shopping and shortly after that I made it to David Walliams' wedding.

I mean, I'm lucky because I've slimmed down, but the last thing I was thinking about was losing weight.

In LA, I live on sushi or salad.

Everybody thinks if you do one thing, you can't do something else. So I like the fact that I can be versatile if I want to.