In other words, when you have someone [like Ridley Scott] with that authority, then you tend to be left alone. But they were good and they're really good people, and I'm a big champion of the BBC and I think that like minds find each other and I think that FX and BBC is a perfect match.

The sandstorm, which I think is an absolute triumph, could have been awkward. It's sex in a car, so who knows. And I think the rooftops look fantastic [in Allied].

Just the idea that someone is married and they've got a kid, and he reports for work one morning and his boss says, "You're wife is a spy. Shoot her." In the real story, he just went back and did it, which would have been a short film. Therefore, I had to spend some time exploring what you would do.

[Woman Walks Ahead] is from me being a very bizarre child. From the age of about 8 to the age of about 15, I was obsessed with Native Americans.

With FX in particular, they've been fantastic and were really hands off. I mean, it helps that you've got Ridley Scott on your side.

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.

Obviously, television is a writer's medium, so you get a lot more power and authority. With a film, the discipline is having a beginning, middle and end, and having it work in a specific space of time.