I struggle to learn by rote. I've had meltdowns on set. Which is embarrassing and shameful.

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.

I was the boy that turned a girlfriend into the most celebrated lesbian on television. I got so much stick for that.

To get a horse to hit a mark without a rider, to get it to stand up, to get it to rear, to get it to pick up a bucket and bring it over is amazing. It's hard work and very rewarding but can be dangerous.

I was brought up in a world of privilege.

I don't call myself an expert because I've played experts. I know a little bit about very little. But it's very hard to not be drawn into saying something, especially if it has to do with the work.

There are very specific demands, though, in television, and you notice the budget constrictions. It's the time constraint and a purse constraint more than anything else that you notice. But the ambition of the writing and, hopefully, the delivery of it gets better and better because we want to outdo ourselves to keep ahead of a very expectant and hungry public.