One thing that people keep on saying to me is that the wealth and the fame must have made up for missing out on my childhood. But the idea of money - putting a price on your childhood - is ridiculous. You will never get those years back and you can't put a price on them.

[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.

I'd rather play a character that was really, really different to me as to someone who is quite close to my character.

You see another side of Draco when he's with his dad. When Draco is with his dad, he doesn't say anything. He keeps his mouth shut. He's sort of bullied by his dad, so he acts very different.

I'm not one generally to do that stuff anyway, and they didn't even ask me whether I'd seen the show [The Flash]. They didn't tell me anything about what I was going to play, they just inferred that there was going to be a lot of meat to sink my teeth into.

I'd love to be in Paul McCartney's shoes for a day. I'd love to pick up a guitar and write songs like he does. Or to experience what it might have been like to be a Beatle for a day.

Harry and Draco have a very weird love/hate relationship.