I've always had, like, from the age of about 11, I've had such an intolerance for bad behaviour of actors that I don't think I was ever going to be that person.

I enjoy any type of physical transformation. I enjoy working with the hair and makeup department and I enjoy watching people be very good at their jobs.

For ages, in my lunch hours, I would just go round and choreograph fight scenes. For fun. So now I'm very good at being thrown around. I bounce, in the words of my friends.

Some actresses are just insane. I've never worked with a nasty actress - they're all absolutely delightful. But completely barking.

My parents were what I like to call proper musical fans. Lots of Sondheim was played in the car.

To the children who loved Harry Potter, I want to say your enthusiasm was the real magic. I so enjoyed being on the journey with you. And to the adults who bought the Harry Potter books and devoured them, I just want to say, those books were for children.

I'm not much of a cake person.