Lots of crime films are about work. Free Fire could have been about a company of plumbers doing pipe-fixing and stuff. But the plumbing film is not so exciting.

I'm very superstitious about going on other people's sets. You have to ask permission of the director; you shouldn't just turn up and skulk about in the background. It's very rude. You have to ask them personally. It's like a vampire being invited into a house.

The reality of any location in Britain being used in a TV program of a film is that something bad is going to happen! That's the nature of drama. Most of the things that get made or basically grisly detective shows about murders, accidents or medical dramas.

I think CGI is interesting but it's too expensive and limiting in terms of what you can do shot-by-shot.

You can muscle your way to the top as long as you're part of the production, which I am. I'm knitted into the money, so it's very hard to extricate me from the decision-making dynamic.

Doctor Who is pretty dark, I think. Generally its dark; its always been dark.

Lots of crime films are about work. Free Fire could have been about a company of plumbers doing pipe-fixing and stuff. But the plumbing film is not so exciting.