Those of you that think filming is all glamour, you're so wrong! Really, only the premieres are the glitzy bits.

I have done a bit of recording and the songs are available on iTunes, and I've got some nice comments. It's something I enjoy doing, but I'm not looking for a singing career any time soon. As long as one person gets enjoyment out of it, I'm happy to make it available.

I used to have all the Goosebumps books as a kid too.

I really tried out for the part of Harry Potter, but they ended up picking me for the part of the enemy of Harry. Actually it is really fun playing the bad kid because it just has so many interesting qualities to it. And Daniel Radcliffe and I get along really well off set so it's really fun filming.

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

You avoid the hype while you're working, you have to, but the premiere is the one night of the year where you can enjoy it.

[Julian Albert] is a CSI investigator; a forensic expert with similar skills to Barry, which gives them a different relationship to, I think, anyone else that he works with, because they're sort of treading on each other's toes in their field of expertise.