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.

"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.

[Worshipping God] is like fellating someone who intermittently stubs fags out on your head for no good reason. And we all know how unsatisfying that can be.

I'll just immediately automatically, without even thinking, check my phone. And it feels like the same little bit of my brain is being - the synapses are lighting up when I do that.

Society? Can we trust us? Doubt it. We're probably not even real, as was revealed in the popular documentary The Matrix. That bloke next door? Made of pixels. Your co-workers? Pixels. You? One pixel. One measly pixel. You haven't even got shoes, for Christ's sake.

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.

"Be Right Back," in which Hayley Atwell brings Domhnall Gleeson back from the dead using his social-media profile, sprang out of an unrelated conversation. Other stories you thrash away at for weeks and weeks.