I basically have the diet of a 19th-century Irish navy, apart from the litre of stout a day. It's meat and potatoes and bread and cheese: those are my four food groups.

I get constantly mistaken for Elijah Wood. I was in Japan and someone held out a photo of him for me to sign.

I see myself doing Harry Potter films as long as I'm enjoying it and as long as they are going to challenge me as an actor. I want to be an actor - it's my aspiration - so I want to do other films. I want to write something and I want to direct something!

I grew up listening to show tunes in the back of the car.

I think, as an actor, and particularly if you are playing the lead in something, you have to view yourself as the head of department for the cast. All of the other departments are accountable and have somebody at the helm who is leading them all the time, and I don't think that the actors should be any different.

Realizing that other people have a problem with [homosexuality] was the weirdest thing for me. As a kid it wasn't even something that was mentioned. It was never something that was even explained to me. It was just, "That's Mark and he's gay." Mark was just another friend of my dad's who would talk about his boyfriend instead of his girlfriend. I was 5. I didn't care. It seemed perfectly normal, and still does.

I'm the only kid in the world who doesn't want an eighth Harry Potter book.