I am someone who thinks that if you've got an actor like that who wants to perform your work, then you should do it, and hopefully Tom [Hardey] likes to do the work that I do, so long may it continue.

I think that helps because there has been no formality of friendship, the politeness of friendship, so we can just work directly on the work that's ahead of us [with Tom Hardey].

True stories are always good because they're so odd, and so unlikely.

It has to be an actress like Marion Cotillard [in Allied] because there are so many levels to it. It's set in the Second World War, when lots of people were doing things that, outside of a war, you wouldn't do, like killing and dropping bombs. She's doing things that one wouldn't approve of, but it's war.

Expect the unexpected, is what I'd say about Taboo. It's different. I don't think you've seen anything like it. It's getting incredible responses, so fingers crossed.

I think people are drawn to characters that break the rules. I think there is something about a good person doing bad things for what they consider to be a good reason. Then the battle is on to almost prove to the audience that it's justified. How far can you go with that? How far can that character go before people won't accept it? Trying to walk to edge of that line is a challenge.

When I was probably about 10 or 11, and I found it was simply something I could do. When you're at school and you do something and you get praised for it, you think, "Oh, right, well I'll do that." From then on, I always thought I'd be a writer. I thought novels at first, and then I sort of naturally drifted into TV.