Potter for me is something that's been giving me these amazing opportunities to start a career and learn while I'm doing, which is the best way to learn.

There were a few years there when I was just so enamored with the idea of living some sort of famous person's lifestyle that really isn't suited to me.

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'.

My preparation is mainly just knowing the lines and getting in and knowing where your character is, knowing what it's about and having ideas that you can put in on the day.

Also I just think I've been lucky enough to have great parents, and I've had good people around me who have always been honest with me, who would give me a purely metaphorical slap if I ever got too big for my boots.

The best thing I've learned is, if you're going out, never go out alone - you leave yourself vulnerable. If you've got someone else there you trust, they can say, be wary of that person. I probably used to be too trusting of people.

I always saw Michael Gambon wearing madly psychedelic socks, and I always thought that's it is one of the few areas where men can really express colour and have a bit of a dandyish quality to their outfit.