My own style is one of not much effort.

David Tennant is a massive fan, and grew up dreaming he would be the Doctor Who one day. So I did feel, when I first got the job, "Right, now I've got to do loads of research into absolutely everything Doctor Who." But that's not possible to do in a short space of time. So my knowledge has been growing and developing as I've been doing it, and that's been fine. That's been appreciated by the fans, and the executives never expect me to be brushed up on absolutely everything.

I was very much into science when I was young - I wanted to be a marine biologist, then I wanted to be a doctor, and then something else, I was always changing.

I've had journalists beg me to please say something negative about my estate.

I swing between procrastination and being really thorough so either way things aren't getting done quickly.

I was very much into science when I was young - I wanted to be a marine biologist, then I wanted to be a doctor, and then something else, I was always changing. Acting didn't come up until much later, probably about 16 or 17. I thought, "Oh, I quite like this."

I don't have an iPod! It's never appealed to me, really.