Sometimes, when I'm not in a rush I go full chaotic good and use my trolley key to release a load of them. I like to pay back from the times in the past when I didn't have a coin handy.
Here in the US they give you the cart behind the till and you leave yours for the next person, so how does it work with tokens, are you like "no I gotta keep this cart, we bonded"?
You put a £1 coin in, you get a trolley, when you're finished and put it back you get your £1 again. If you leave your trolley somewhere without putting it away you lose your £1 and whoever decides to grab it gets a free £1.
Ah right ok. Yeah, that's one of those cultural differences here, you technically can do that, but you'd have to speak up at several points during the whole ordeal to avoid swapping. Going on ten years here but I'm still a true Brit who won't say shit.