I consider myself really lucky and I always have done. My approach is that if I know I'm relaxed and happy, then I will do my best work.

New York and LA are both great places to visit, but I wouldn't want to live in either of them now. I find New York extremely claustrophobic and dirty. LA is quite a nice place. But there's no hustle and bustle, no street life.

I spent a couple of months just riding a bike doing my own training in the streets.

When you're shooting 20-odd episodes in a season, the last thing you want is for each script to be the same tone.

For me, there are two different things that make Sherlock Sherlock. One is, you know, within the books: obviously he's a genius with an attention to detail, his ravenous hunger for all aspects of knowledge that might feed into his work. But the major thing that makes him Sherlock is his relationship with Watson - their friendship. For me, that, I guess, is the biggest side, the more interesting side than the genius.

When you're playing a character, you don't really want to have an opinion about where you're going to end up. Otherwise, you can't really stay in the moment and in your character.

I don't want to talk about the specifics of other people's performances compared with my own. I'd never do that.