Honestly? Not really. As JustDivine, there is a minimum wage requirement etc here.
Generally I don't eat out a lot, but when I do, it depends on the service, i.e how nice the waiter/waitress was etc. Maximum will be £2.50 if I do.
When I was 15/16 I briefly worked in a pub, and all the tips went into a jar and was split between the bar staff, waiters/waitresses, kitchen staff/chefs. I know some people will disagree with this, but it annoyed the hell out of me that we all had to split it. For me personally when I tip someone its because THEY have provided me with a good service, so as selfish as it sounds, I felt that I should have kept that tip if it was left for me. Funny how all the waiters/waitresses agreed, but the kitchen staff/chefs didn't lol, and they were on considerably higher wages!!
I work in a hairdressers now, and before I worked there I never even knew about tipping hairdressers! I always think the trainees deserve more tips than they get.