Evanna Lynch

While I was in London it was completely upside-down. I got a whole new life and it was a challenge to keep in touch with my life in Ireland, but it was great fun. Now though, I've been back home since November and gradually all connections with my HP life have been fading.

People like her because she's like a breath of fresh air. Because in the fifth book it gets so dark and Harry's always cross and then every time Luna comes in all the tension goes and she makes you laugh because she's so funny and really honest. I don't know how much I'm like her, there are some similarities but I'm more determined than her.

They warned me, 'you're going to be doing the screen test with Daniel Radcliffe a week after the audition.' And then in the hair and make up department, he walked up behind and scared me. But you get used to him quickly because he tries to make you feel very welcome and at home.

As so many writers know, the experience of creating an imaginary world is closer to dreaming than it is to normal, grit-your-teeth work. It's preconscious rather than conscious. Ideas fall into your head, and the book writes you, rather than the other way around.