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 suppose whenever you go through periods of transition, or in a way, it's a very definite closing of a certain chapter of your life. I suppose those times are always going to be both very upsetting and also very exciting by the very nature because things are changing and you don't know what's going to happen.

I definitely want to go on acting for as long as I can find employment. I'm never happier than when I'm on a film set. I just want to keep working.

Once Now You See Me proved that that tone could work, which I'm sure was a nightmare for them in post - is this too serious? Do we have to say that magic really does exist or not? - I can take that and have fun with the tone that they established.

I think it's kind of great, to be honest. I'll never do another film [like Swiss Army Man] where I get to talk about those things, so I might as well enjoy it while I can.

All these things, social media or [smart] phones or the things that distract us from each other, are fairly new. They're all fairly new inventions, and I think we're in a stage where we sort of as a whole have gotten these new toys and we're just obsessed with playing with them. I feel like after a period of adjustment it will inevitably be a regression from where we are now.

I'm also a fan of ridiculously coloured and patterned socks.