Matt Smith:
Can you first tell us a little bit about the Christmas special?

The Christmas special for me is a bitter sweet episode because I’m leaving, but Steven has written a brilliant, adventurous, funny episode and I’m really thrilled with it. It feels wonderfully Christmassy.

What did you want from your last episode?

I think it’s good for the Doctor to go out with a bang, a crash and a wallop. I’m pleased it’s really funny and mad. When I got to the last 20 pages and it was quite a hard read for me, but I hope it’s going to be a belter.

We’ve got a great director in Jamie Payne...