I think it’s because it fires the imagination and the characters are likeable and there’s something very English about them as well. I’m not sure if Doctor Who’s done well around the world but it’s got a peculiar eccentricity about it which I think we can all identify with as English folk.

As I say, every Doctor Who has been slightly mad but likeable and the whole idea that you can travel through time, even if you’re a non-believer, it’s still a nice possibility isn’t it? I think it brings out the child in us all.