I've written 16 children's books and five unpublished novels. Some of the latter were breathtakingly bad.

At 20, 25, 30, we begin to realise that the possibilities of escape are getting fewer. We have jobs, children, partners, debts. This is the part of us to which literary fiction speaks.

As a teenager, I was always this strange mixture of kind of vice-captain of the rugby team and sensitive artist type the rest of the time. I was sent away to this public school in the middle of nowhere, and I think we managed to completely miss out on normal youth culture.

Well, we're meant to be writing stories today.

There was a time in my life when I was going in and out of houses that were extraordinarily different - from a working-class terrace in Northampton to the homes of friends who were really very wealthy. It was quite an odd position to be in, I realise looking back, and quite a nice one.

The most difficult book I wrote was the fourth in a series of linked children's books. It was like pulling teeth because the publisher wanted exactly the same but completely different. I'd much rather just do something completely different even if there's a risk of it going wrong.

I've worked in television long enough to know that when you stop enjoying that type of thing you go home and do something else.