I could worry about pretty much anything you put in front of me, so I'm not actually sort of anti-technology. So it doesn't sort of come out of that. It's not like a fear of the future. It's a fear of everything.

I really don't want to sound like overly negative or critical of the Internet in general because I'm actually really quite pro-technology.

I actually had that conversation with [Channel 4 Chief Creative Officer] Jay Hunt. We were at a bit of a crisis point. I'd written a totally different script - about war, basically - that got rejected at the last minute for various reasons. The whole of the series was in doubt. I said, "Well, there is one other idea ["National Anthem"]."

What is useful about when there is a sort of pull-out to reveal moment going on is that it actually focuses the mind when you're writing the earlier scenes because you're thinking 'right, how do I? I can only show this amount of the room... I can only show these characters from the waist up because they've all got robot legs!' it's a challenge so it keeps you engaged on some level.

While I was thinking about that, the military, I read a book called On Killing, about the obstacles people have to pulling the trigger in combat. So sometimes you just absorb all this stuff without realizing you were doing research.

Hi-def is merely the latest in a string of evolutional leaps that have transformed the way we sit slumped in front of a box wishing we were dead.

Generally I know that we've hit on a good idea if there's a moment where I'm going "HA HA HA!" because that's usually my starting point, me laughing.