When you're playing a character for 10 years, it can challenge you less than it did at the beginning, so it was exciting to take on some new shoes. Especially with Erich Blunt, because being a tech wizard wasn't something I thought I would do after Harry Potter.

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?

I don't like to label films with a genre.

I started my own record label.

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.

Languages, like our bodies, are in a perpetual flux, and stand in need of recruits to supply those words that are continually falling, through disuse.

What a house. Turns out they're doing OK, the Malfoy's. However, the interior decorating leaves a lot to be desired. And needless to say, Voldemort isn't the greatest houseguest.