Alastair Reynolds

I've never had much interest in spinoffery - the idea of writing in someone else's universe generally leaves me cold - but 'Doctor Who' is different. I've grown up with it. It's been part of my life since I was tiny, watching Jon Pertwee on a grainy black and white television in Cornwall and being terrified out of my mind.

In the 1880s, people all over the world looked to America for inspiration. Its very existence was proof that it was possible to have a relatively free and peaceful country. No income tax, no foreign wars, no welfare state, no intrusions on civil liberties.

I usually feel like the role comes to you to sort of illuminate some piece of where you are in your life. I feel like I myself am a single woman and I'm childless - by choice - at this point, and I don't know what will happen.