You grew up as a Doctor Who fan. What are your memories of the Cybermen?
I think the first episode I ever saw was “The Moonbase”. That was the first time that I saw Cybermen, so I must have missed “The Tenth Planet”. I remember them coming out and taking the guy from the sickbay – in my memory, interestingly, they walked through the walls. And when I went back and looked at that bit years later I saw that no, they came through a door. And I wanted to get that kind of weird creepiness back to the Cybermen. I don’t think I’ve particularly succeeded, mostly because I got distracted by something else, and there was also a point where I said actually, we’ve seen those “Moonbase” ones. You can go back and look at them, there’s no point in doing that again. Let me try and do something else with it, in the same kind of way that Mark Gatiss approached the Ice Warriors.