Very little Hogwarts, too...

DR: Very little, so I've no idea what's going to happen to the sets. They're going to keep them, but we're going to have to knock some down...

What do you think Harry's greatest weaknesses are?

DR: I think he's quite reluctant to listen to other people sometimes. Some might say he's overly opinionated. I think he can make a martyr of himself sometimes; I think he likes the suffering, lonely hero mystique. Sometimes I think he revels in that. Not always by any stretch of the imagination; I think 90% of the time he's absolutely genuine, but I think 10% of the time he slightly revels in it a bit too much.

What's the best bit of advice you've had during filming?

DR: I was talking to someone recently, funnily enough, and they said an interesting thing about acting. Acting is really instinctual and I think you can overanalyse what you're doing. A lot of it has to be based on instinct. Someone said something really interesting which is that you should never move or feel you have to change your expression just because you haven't changed your face for a while. Wait for that just to happen and almost try not to be in control of it because then you'll be in control of it in the moment. I'm explaining it really badly but basically it's about waiting for the impulse to come to you rather than forcing it to come.

You've been on these films for a long time now. Is there still a sense of excitement or does it dull?

DR: I'm here doing a job that I love and I get to see some of my best friends every day at work. I'm incredibly lucky and I do still get excited to come to work and I still do get wowed by some of the sets that I see. When I walked onto the cave set, obviously some of it is green screen but of what's actually there, it's amazing. You're still very wide-eyed and overawed by it, definitely.