There's more to come. Series 4 [of Peaky Blinders] is coming soon. But I'm proud of making my hometown, which is considered to be completely unfashionable, slightly fashionable. People actually know where it is now.

It's always good to have a world that people don't know about - a world that hasn't yet been done. It's like treading on fresh snow. You're the first one there.

I'm very, very excited because I'm just completing Episode 6 of Series 4 [of Peaky Blinders], which again I think is the best yet. And I'm loving it and it's not like work, it's not like a labor, I love doing it, and the boys are coming back and they're loving the scripts.

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].

A creative person can suddenly realize it's not 90 minutes. They haven't got to do three acts, they haven't got to do the arc, but they can do other things. I think just as novellas turned into novels, I think that television series can begin to have that depth.

When you're watching, I find two things happen. You either watch a film and it's really good and then you think, "Why can't I do that?" Or you watch a film and it's not good, and you think, "Why am I doing this?" So either way, it feels like being at work.

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.