Even though Doctor Strange is an established character, when you're doing an origin story there's a lot of room for manoeuvre.

My first, big, silly role at school was as Arthur Crocker-Harris in Rattigan's 'The Browning Version,' where my job was to make school-masters' wives weep with recognition.

I've been quite a late developer on the clothes front, but I've suddenly realised it is one of life's joys.

The guy [Doctor Strange], he's like most of us, he's uncorrupted flesh from the beginning of his life, he's somebody who's not marked with original sin or any kind of crap like that. He's somebody who's come into this world and had experiences that have shaped him to the point that we first meet him. There's always got to be leverage. I think there is some clear explanation of that within this film, but potentially further down the line...for more of that to come out as well.

If I'm playing someone who's smart, suddenly every character I've played is smart. If I'm playing a bad guy, every character is a bad guy. I suppose it's that thing where people want to see a through-line to understand you. I mean, you know, I have played pretty ordinary people too.

I'm always playing characters with intellects profoundly superior to mine. That's great fun, even though it's as much a fantasy for me as for the people watching me.

My assessment of Julian Assange is a professional one, really, of what he's managed to achieve, and the idea that he came up with, which set the world alight and continues to inspire others like Snowden [NSA leaker Edward Snowden], about the secret goings-on that are done in our name with our tax dollars on behalf of big business or politics. He launched the revolutionary idea that citizens can start to claim back a paradigm for questioning power structures and those in authority through an anonymous, whistle-blowing website.