Before I go on stage, I knock three times. Three is my lucky number; I once went into an audition and was number 333 and got the best part ever.

Unfortunately I had an ankle problem and underwent three operations.

I don't mind giving everyone a shock - including myself.

When you get a bit older and you realise that no one knows what they're doing, no one's perfect and it's fine.

I remember stealing some pic n' mix when I was seven; when I got out of the shop, I burst into tears.

I trained as a ballet dancer - well, I started when I was two and a half, and was serious about it from when I was eight until I was 18.

I filmed 'Albatross' before I got 'Downton.' It's a coming-of-age movie about this girl who leaps into this family's life, like a whirlwind. She's ballsy and brash and wonderful, it was such an amazing character to play.