Directing is more what I would like to get into eventually. Frankly, I feel like it would be a waste if I didn't because I've spent so much time on film sets, and I know how they work, and I love them, and I love leading them. I would like to do that as a director definitely.

I don't think that you necessarily need a certain type of background to take on roles. You see actors from very, very privileged backgrounds playing working class characters and vice-versa. I don't think your background limits you as to what you can do.

I don't think there's anything that I would really baulk at doing on-screen. I don't think so. I've got certain pet peeves about writing... my pet peeve about reading scripts is when they give you a line reading and there'll be a line but next to your character's name it'll say 'very angry'. But I'm like: "Well, I'll decide that actually!" So, there's little things like that. That's a slight pet peeve.

I was very sad to leave Harry Potter but equally there will be an element of excitement about the idea that a script might come in and I don't have to go: "I'm sorry, I'm kind of busy for the next four years." The idea of that is quite exciting.

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 would say I was challenging the system quite. But I like to think that if the choices I make are slightly unexpected or challenging to people, then that is good. We are definitely three fairly like-minded people in terms of what we value in scripts and in storytelling.

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