Brits are more likely to tip in restaurants but I've seen tip boxes in hairdressers.

The thing is we see as something extra, for good service (btw if you see service included on your bill you can ask them to remove it they're not entitled to it).

In the US you have a different model, service seems to be tipped good or bad, yeah more if it's good but it seems obligatory no matter what. For us that looks like we're paying twice. The store owner is getting their cut and now we have to subsidise his staff because he's too greedy to pay them properly?