My preparation is mainly just knowing the lines and getting in and knowing where your character is, knowing what it's about and having ideas that you can put in on the day.

My parents are left-wing, and I would describe myself as that. But also, you know what? I wouldn't describe myself as that. Because I don't have to. Because I'm not a political party. Most people are a little bit of each, and we change our mind on various issues.

I take things in better when I'm allowed to talk, and respond, and engage and move around a bit.

If I can make a career for myself after Harry Potter, and it goes well, and is varied and with longevity, then that puts to bed the 'child actors argument'.

I feel very English in a suit. There's something about being in a suit abroad, particularly in America, that feels empowering.

Who are the executives, and what are the stories that are being released? Not just in movie theaters but online. When you watch Master of None, you're like, yes, this is real life to me. These are refreshing types of stories.

I've always had a slightly overactive imagination.