Lets cut the polite chit-chat; you're totally buff. How did you get a body like that?

[Laughs] "I do a lot of body building, run everyday,and I'm learning some martial arts. I play rugby, and tennis when I can - I even won two tournament cups in Israel."

Random! So, tell us about your charcter....

"He's a mixture of good and bad. I think he's more of a good guy, but some spells are cast on him to make him look bad. But he falls in love with Hermione, so he must have a soft side..."

Oooh, so does he stop her being such a swot?

"Well, he gets close to her, put it that way. And they go to to the ball together..."

Any crossover into real life...?

"No! But Emma [Watson, who plays Hermione] is a really lovely girl. She was one of the first people I got to know on set. She helped me settle down a lot in the beginning, which I needed."

What about the girls at school? Are they keen now you're famous?

"I'm, not sure - I've been away filming for ages. And when I do go back, I'm head of my school-house, so I'm really busy. But generally, they're well-behaved!"