[My parents when I was a kid] would go, "It's a nice hot day. Why are you inside watching the TV?" And you go, "Well, 'cause it's better?"

"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.

There's something I find very satisfying about a nice ironic twist.

A sort of angry populism here in the UK and across Europe, a sort of anti-political mood and what then steps into that place? In one episode [of Black Mirror] you won't have seen, there's a very simple gaming gadget that turns out to be a monstrous idea, which I suspect we will end up doing for real.

I did once leave one of [my kid] watching something on YouTube, something completely innocuous, and I went out of the room and the algorithm kept playing the next thing and the next thing and somehow worked its way around to showing him the trailer for John Carpenter's The Thing - at which point I walked back in. He wasn't happy.

[British television series] Hammer House of Horror. I used to really enjoy these one-off stories where often there would be an incredibly cruel twist. A good example is the episode with Burgess Meredith and there's a nuclear war and he drops his glasses. To this day, you can show that to anyone and they'll go "Bwrrrrrrrr!" You know, sort of wander away shuddering.

[The rumor that David Cameron maybe once did this unspeakable thing with a pig's head] it was freakish and weird. It seemed such a coincidence that I couldn't quite process it. And then, as it sank in, I genuinely had the thought, "Am I living in a Truman Show sort of VR simulation designed to send me insane?"