It's a funny thing about stories. It doesn't feel like you make them up, more like you find them. You type and type and you know you haven't got it yet, because somewhere out there, there's that perfect thing -- the unexpected ending that was always going to happen. That place you've always been heading for, but never expected to go.

We have a plan to top it. And I do think our plan is devastating. We’ve practically reduced our cast to tears telling them the plan … we’re probably more excited that we’ve ever been about Sherlock.

You have to take your own bold approach, and if you do you will be rewarded with success. Or calamitous failure. That can happen too.

I think of myself as a writer with a sense of humour rather than a comedy writer. Happy to tell a story with lots of jokes in it - I wouldn't know how to do jokes without the story.

When man invented fire, he didn't say, "Hey, let's cook." He said, "Great, now we can see naked bottoms in the dark.

See the bowtie? I wear it and I don't care. That's why it's cool.

Well, the world is vastly counted in favour of men at every level - except if you live in a civilised country and you’re sort of educated and middle-class, because then you’re almost certainly junior in your relationship and in a state of permanent, crippled apology. Your preferences are routinely mocked. There’s a huge, unfortunate lack of respect for anything male.