I remember seeing a post a while back about this but I can't find it now, I think it was in someones trip report. It was about restaurants and the difference between what Americans are used to and how they are in the UK. Something was mentioned about when to ask for your check, ordering iced tea and or ice water. This is just another one of those questions that I'm hoping will keep me from looking like an ignorant tourist (maybe it is too late for that).
Thanks again all,