"National Anthem" was just a funny idea I'd been knocking about. I initially thought about a beloved celebrity having to do that - and then I watched an episode of 24. In my head, I was writing almost a parody of a 24-style president woken in the middle of the night with a crisis. It seemed more interesting to play it ultrastraight and to have the viewer's initial reaction be one of laughter and disbelief - and just have the whole thing become progressively more uncomfortable.

I suppose kids probably know less boredom these days - or at least a different kind of boredom.

I saw The Twilight Zone for the first time when I was 12 or 13. I used to stay up late to watch.

We take things that would have struck us as miraculous five years ago for granted. Like Pokémon Go would have been insane, and now it's just like, "Oh, okay."

In the U.K. I'm probably better known as a comedy writer - or certainly that's my background is in writing comedy.

I was more aware initially of shows like Tales of the Unexpected. And the BBC used to put on a lot of one-off, bizarre television plays.

What are people going to expect when they sit down to watch a new episode of Black Mirror? And what you're going to expect is somebody with a translucent TV in a drone strike and a robot walking by... or frowning at a phone and going 'aaah! Oh no! I've just deleted my own leg!' or whatever. So I thought well, let's not do that.