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

[Scott Derrickson] is terrific, really sharp on the details, and he's not afraid to go to dark places.

I am very flattered. I have also become a verb as in "I have cumberbatched the UK audience" apparently. Who knows, by the end of the year I might become a swear word too! It's crazy and fun and very flattering.

If you can't fail, you can never get better.

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.

If people ask, 'Are you Sherlock Holmes?', it's horribly naff, but I say, 'I'm not, I just look a bit like him' - which is how I feel. There are bad attributes of his that I really don't share!

As an actor, you are aware of how a role can seep into your real life.