Because I'm short and slim, I can identify with somebody who's an unlikely fit for something and desperately wants to be part of it.

I was worried on a personal level because I wanted to be slightly taller than I am, ideally. But I've now accepted it. Basically, I came to the conclusion a while ago that you can either be really bitter about it or you can make loads of funny jokes.

I like science and I love gym. Oh, and I like art, but I'm really bad at it. I'm just a terrible drawer. I can't draw a circle. Even with a ruler, I can't draw a straight line.

I sort of try to read the books when they come out impartially and not make up my mind, but the fact is when I was reading the sixth, 'Harry Potter And The Half-Blood Prince', there were bits in there where I was going, 'God, I would love to do that because it's so good'.

If I can make a career for myself after Harry Potter, and it goes well, and is varied and with longevity, then that puts to bed the 'child actors argument'.

For me, you go to university to meet lots of different people from different backgrounds. I think that's one of the most important things you get there. And you also get some sense of direction regarding what you want to do when you leave. I sort of know what I want to do in my life - I want to act and ultimately I'd like to write. And in terms of meeting people from different backgrounds, that's what you get on a film set. So the two most valuable things that university would have given me I've sort of achieved by being on a film set.

Every day the Daniels [Kwan and Scheinert] would come up with some amazing solution and [make it easy] to put yourself in their hands. There's something really lovely about knowing you're working with directors who know exactly what they want and exactly what they're looking for, and they're not going to move on until they have it. That, as an actor, frees you up a lot because you can [try different approaches] and they'll only use what's appropriate.