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.

Looking for happiness is a sure way to sadness, I think. You have to take each moment as it comes.

I'm still very sensitive and wary of people recognising me The only thing that really annoys me is people trying to surreptitiously take a photo on their phone without asking. I feel it's cowardly and a bit pathetic. Just ask me if you really want me to have a photograph with you.

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.

I'm always keen to use my body in my work, so I'm looking forward to the motion capture for Smaug. Both Gollum and King Kong were primates, whereas I'm playing a serpent, so it'll be interesting - I'll have to tie my legs together, possibly, or else they'll be kind of splayed out to the side as a reptile's should be.

If I'd had fame early on, I'd have been able to abuse it in the way that a young man should.

I think what I loved in cinema - and what I mean by cinema is not just films, but proper, classical cinema - are the extraordinary moments that can occur on screen. At the same time, I do feel that cinema and theater feed each other. I feel like you can do close-up on stage and you can do something very bold and highly characterized - and, dare I say, theatrical - on camera. I think the cameras and the viewpoints shift depending on the intensity and integrity of your intention and focus on that.