It's always been my dream to be in a war film.

You have to prepare for the unexpected. You have to be able to react to things that don't necessarily happen every night, or aren't supposed to happen every night. And you have to react to it in character.

I must confess I don't own Harry Potter DVDs. My parents do. They have them all. And they like watching them. They've got all their home videos done in HD quality! They love it. But I struggle very much. I'm very self-conscious as an actor, anyway. I don't like watching my own performances, even in this recent one.

You hear about all the great British thespians doing stuff on the West End and that kind of thing, and I missed out on that. Alan Rickman actually suggested to me that I should try it. And I thought, "Geez, I really don't want to do that." But he must have recommended it for a reason, so when an opportunity came up, I took it. And it was tough. It was hard! But by the end of it, I absolutely loved it.

I had a screen test and an audition for the role of Neville Longbottom. It wasn't a job at that point. It was just something I enjoyed doing. And it's hard to remember back then, really, that much. But I just remember loving it.

Alan Rickman, who was mentored me a lot. He was very keen to offer his opinions on stuff. Not in a pretentious way. Not in a patronizing way.

Michael Gambon telling filthy jokes and Alan Rickman talking about scrambled eggs, just really normal things, and yet they're these amazingly, superb, famous actors. I feel so privileged to have been around them on the set of Harry Potter.