Approaching a comedy character is fun because you get to sit down with the director and ask, "What makes you laugh?" Then you end up bouncing ideas off each other.

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.

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.

I'm very professional.

I think David Yates was just like, "You've got on with it for a few years, I'm gonna let you off the hook." And also, I think it's because the action side of stuff that we were doing, it was going to be very difficult to do all that with all the prosthetics on. It was gonna be hard work, and I think they just said, "You know what?" I think they put a level of trust in me, as well. They said, "You know, we're gonna let Neville Longbottom lose the fat suit, lose the teeth, lose the Adolf Hitler hair."

I can't wait to go back home and disappear into relative obscurity for a bit. I just want to go back to my house and just get away from it all for a bit. It's so flattering to hear people say nice things about the performance, about the Harry Potter film. It's great. Don't get me wrong. I'm not ashamed of it. I'm not shunning it. It's just been such a bubble I've been in, with these promotions.

In fact, my favorite Beatles song is "In My Life." And from that, you can gauge that my friends mean so much to me. I love John Lennon, so it's kind of like moody... There's a lot you can gauge from that. As insignificant as it seems, as an actor, it's an interesting way to approach a character.