What about the the term "good manners" which is an expression used this side of the Atlantic to denote a cultured ,polite attitude to one's fellow diner etc ?
Here's another one "taking the occasional bath"
I'm sorry old chaps I hope I haven't offended anybody.
I've just noticed that last expression "I'm sorry old chaps I hope I haven't offended anybody." is an excellent example of what I referred to above as "good manners".