The last thing you want to do when you are about to film a scene is think, 'Oh my God, so many people are going to watch this.

I wanted to be as authentic as possible because, first of all, Jean Shrimpton is still alive. And, she's interesting enough to be played accurately. I didn't need to add things.

Basically, I always go to vintage shops rather than going shopping for new clothes.

I know what it's like to be a model and go to castings where some people like what they see and others look at you with distaste.

I had a lot of alone time with no brothers or sisters running around, or anything. I would just sit and imagine things, all the time.

Being in Doctor Who has been so amazing. I don't think I will ever have a job quite so fun ever again. I feel sad because I am going to leave, but with any story, it has to come to an end.

I actually don't have a problem with shooting and then just walking away and forgetting about it. I'm not really like a Method actor or an old soul. It doesn't stay with me.