If someone tried to take the hierarchy thing too seriously - for example, being lovely to producers but moaning to runners about the tea - that would not be accepted on 'Harry Potter'; someone would pull you aside and have a word.

In England we are sort of very awkward.

People always tell me I'm nothing like my character. Well, hopefully not! He's a character who's very defined. He was purposefully written by Jo Rowling as very one-dimensional in the first few books, because you're supposed to hate him.

Also, I just think of Draco and he gets me in the right mood. He just keeps getting worse and worse.

Going online and asking questions is the best way to learn.

One of my first things I was fascinated with when I got on set was how does Grant do all this Flash stuff? it looks so good as the end product, but how does the special effects team work? How does the visual effects team work?

There are a couple of carp fishing books I've been reading. I'm very interested in that line of books, because I think they write very well, carp anglers, about the general environment.