“I [cut my hair] for a film, but it means I have to wear a wig in Doctor Who, which is a nightmare. I’m excited – I start shooting the Christmas special [on] Sunday. It’ll be sad – the end of a wonderful era!”
The Doctor Who 50th Anniversay Special airs on 23 November on BBC One. You can buy Doctor Who – Series 7 Part 2 on DVD for £13.75 at Amazon.co.uk.