Like most writers, I write about what has happened to me as that involves the minimum amount of research.

Writing for adults often means just increasing the swearing - but find an alternative to swearing and you've probably got a better line.

Well we've moved through the funfair a bit – we've done the rollercoaster, now we're on the ghost train.

The Doctor: I've seen bigger. Clara: Really? The Doctor: Are you joking? It's massive!

Do you know how you make someone into a Dalek? Subtract Love, add Anger.

Time travel is always more magical somehow when you go into the past. Traveling into the future is something you do, every day. You're just not going to get very far. So, I rather like the past travel.

Amy: I never knew you drank wine. Doctor: I'm 1103 I must have drunk it sometime in my life. *takes sip and spits it out in disgust*