A lot of people struggle in their younger years, and I think people can relate to that.

I'm very self-conscious as an actor, with performances and things, and I don't like watching my own stuff.

What I've found is that stage is very much a foundation of acting. It's where it all began and you're working with that repetition.

Theater gave me the confidence to believe I could play something else, 'cause it was so difficult. It was me out of my comfort zone. It gave me the confidence to believe that I could push myself and challenge myself and still succeed. Yeah. I'm very, very glad I did it. And I'm very keen, now, to take what I learned there into more television and film.

Twitter is the limit of me putting myself out there.

I was never really bullied at school. I was pretty confident in terms of school work and teachers and I've never shyed away from much but a lot of people have come up to me and said that they were bullied at school and my portrayal of Neville has influenced them a lot in their lives and helped them out.

At that age, filming Harry Potter, I never contemplated. I just went in there and did my acting. I never thought, "What's the character actually feeling here? What's he trying to get across?" And never looked at it from that classically trained actor's point of view. And so when Jason Isaacs started throwing up these ideas, I thought, "Whoa. What an interesting way to look at acting." Which is why, again, I would do theater.