It was during this time that you chaired an event for Richard Dawkins and, as a result, shifted your views from atheism to agnosticism. Why the conversion?

The event sold out very quickly. The people were huge fans of Dawkins, and being amongst a group of card-carrying atheists was something I'd never experienced before.

I'd probably have called myself an atheist at the time. But normally, that means going your own way and creating your own response.

Instead, it felt more like being in church. Suddenly, there were a whole heap of people who seemed to be responding as one. To me, that reproduced some of the things I disliked about the church I was brought up in, because leaps are made from atheism to other beliefs that you are meant to have as well.

For instance, the belief that there is something negative about the influence of religion, which I don't necessarily think is true. It's a very complex sociological question that would take a lot of research, but suddenly, if you're one of us, you also have to be against religion.

At that point I feel uncomfortable. I also felt uncomfortable with the idea of wanting to convert people – to atheism in this case. It felt evangelical, and that's not my instinct at all.