I've seen a few places say what a clever pun on Anarchy in the UK the title "Arachnids in the UK" is, which is handy because if it hadn't been pointed out to me I'd never have realised it was clever, I'd have thought it was really reaching for a weak pun that didn't quite work. And let's face it, if there's one thing I know about, it's weak puns that don't quite work.
"Arachnids in the UK" by Chris Chibnall, directed by Sallie Aprahamian. Spoilers after the cut.