In the UK the sort-of rule is that you tip for 10% food if you pay after receiving it (and that's pretty much the only situation where anyone tips).

It seems like since the pandemic even that is less expected though, which is nice.

Taxis used to expect tips, black cab drivers often still do.

People used to play this whole unpleasant game of saying "round it up to £30 if you do me a receipt", and the driver providing a fistful of blank receipts in return - almost as if expenses fiddling was less shameful than tipping.

Thankfully, the likes of Uber and mandatory card payment terminals in cabs have ended all that.

I think people also used to tip the postman, newspaper boy and binmen at Christmas.

Oh, yeah. And I remember a columnist in one of the Sunday papers in the late 90s talking about tipping the butcher for the Christmas goose, but I think that was probably a bit of a "look how old-fashioned I am!" affectation even back then.