I didn't have any qualms. I'm used to taking my clothes off in front of strangers. I've done it since I was 14 - with my mother's adult education art classes. She liked to paint and I went along as a life model.

In England, 'Doctor Who' has always been considered a children's show, at least by children.

Having been in Hollywood as a shadow, as someone who is almost invisible, I can see fame for what it is.

The truth is, I'm not a coper. I hate stress. I might appear calm externally but internally it's all going on.

Children's programming in America, I think it's pretty shoddy in terms of lack of diversity. It's pretty much cartoons and Disney sort of shows. I don't find any of that stimulating for children.

I think if you live in London, it's such a cosmopolitan city, nobody even notices different-race relationships. I assumed it would be even more liberal in the States, and it's totally the opposite.

One of my sisters is physically and mentally handicapped. She took a lot of my parents' attention, so I grew up in my own world, playing in my room for hours and hours.