“I was very keen to work on the script with Scott Derrickson and [C. Robert] Cargill, and working out the important story beats, changing lines, upping the comedy, changing the pace, all of that was great fun.”

I’ve never been front and centre as an iconic American character [like in Doctor Strange]. Day to day, you know you’re painting on a very big canvas.

I really cannot get over the generosity of our Tibetian teacher. He said, “Don’t punish yourself. You’re going to be a student at a university in the north of England. You need to have your experiences and have your fun, and not judge yourself. Don’t live in guilt and regret.”

Enjoy the journey of life and not just the endgame.

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

It is a wonderful thing to get married young and become a father.

Marvel always make it fresh so you can give it your personal twist.

It’s an interesting arc. You start with a character [Doctor Strange] who’s likeable and charming but very arrogant and distant. He’s funny but you can see there are massive holes in his life. It’s a very painful transition and all that he becomes is tested so quickly and violently.

I did a lot of acting at school and university, then I went to drama school. It was quite a normal route.

I think playing any iconic role when you’re stepping into big shoes, into the shadow of people who have come before you and you can’t process that.

Landing the role of Stephen Hawking was the most positively surprising thing that has happened to me.

I drive a motorbike, so there is the whiff of the grim reaper round every corner, especially in London.

I’ve always wanted to play a spy, because it is the ultimate acting exercise. You are never what you seem.

I tell my wife all my secrets.

There’s a heroic amount of effort that goes into making him [Doctor Strange] a superhero by the end of the film.

I was brought up in a world of privilege.

I’m interested in art for all. I don’t want it to be only the sons and daughters of Tory MPs who get to see my plays.