What I wanted to do [in Allied] was get two characters who fall in love for real, across the barricade, and then it transcends the war.

I've been writing so much. And what happens with TV is that they split [Taboo] into two blocks, so you get a director that does four and another director that does another four. You commit yourself to seven days a week, for 12 or 13 hour days for a long time. I couldn't really do that.

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.

The plan is that there would be three seasons [in Taboo], and, as with Peaky Blinders, I have had a destination in mind from the beginning, because I think it helps as a writer. The destination in mind is that James Keziah Delaney sets foot on Nootka Sound. But that's a long way off.

When Brad [Pitt] responded [to Allied], suddenly what was impossible became possible, which was great. But along the way, whenever I told the story, it had an affect on people. At its core, this was an effective story.

With any period piece I think the thing to do is forget that it's not contemporary when you're writing and to have the characters feel as much as possible like characters that you would know.

I think once those friendships, if you use that as an analogy, the friendships between the audience and the character is established, then you can start to take liberties. I believe that as this unfolds people will find the time invested worthwhile.