There are moments when, like all of us, you get a bit self-conscious and you'd rather not be living any of your day in public. Those are the awkward times, but you've got to have fun with it.

Laughing and crying are really similar - what happens to your body. It's a very similar process in your diaphragm. Like a musician, you have to do your scales once in a while and warm up your voice.

I am shortsighted. I need glasses for watching movies or concerts. It's not a hipster affectation; I do have poor eyesight. This is how ridiculous my life is: I've had the test for contact lenses, but I haven't found a half-day where I can go to the optician.

I'd love to do a noir. I think Steve McQueen is so cool. But a classic film is a classic film, and perhaps the fantasy of being those characters should be left alone. You're treading on very thin ice.

People always want to knock you when you're up.

There's a huge amount of footage of Julian [ Assange] online, but he's usually in presentation or defending mode, talking about his cause, or the revelations which Wikileaks have brought about. There's none of Assange relaxing or in private mode. There's none of the personality I tried to give him behind closed doors [in The Fifth Estate ].

I was thrilled with how the first series of 'Sherlock' was received. It was such great fun to film, which makes it so rewarding when something you enjoy is so well received.