I think a big part of my job is to make an atmosphere on set and have an attitude that it's about experimentation, and you can't do anything wrong. It's not about judgment, it's not about me kicking over a chair and storming onto set and acting stuff out and telling people to copy what I do. That is a style of directing some people have, but I don't understand it.

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

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.

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

It's part of developing the whole state of how cinema is; everyone is looking out and engaged rather than it being just a financial thing or sitting back, waiting for scripts to turn up.

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.

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.