I call BS on the "something the British find ridiculous" line. I'm from Britain, and people tip all the time.
When I go to a restaurant or whatever, I generally tip if the service has been good, or if the meal has been good. For example, I went in Chiquitos and my food didn't arrive for an hour, and they didn't refund it or anything, so of course I didn't leave a tip. But then I went to some pancake place whose pancakes were exceptional, and the service was great, so I gave the waitress a fiver before leaving.
If someone said "you haven't tipped" I definately wouldn't tip them, because if I didn't tip it's because either:
a, it wasn't worth tipping
b, I didn't have any spare change on me
When I go to a restaurant or whatever, I generally tip if the service has been good, or if the meal has been good. For example, I went in Chiquitos and my food didn't arrive for an hour, and they didn't refund it or anything, so of course I didn't leave a tip. But then I went to some pancake place whose pancakes were exceptional, and the service was great, so I gave the waitress a fiver before leaving.
If someone said "you haven't tipped" I definately wouldn't tip them, because if I didn't tip it's because either:
a, it wasn't worth tipping
b, I didn't have any spare change on me