We've recently been watching the BBC series Downton Abbey. It's an excellent production although basically an Edwardian soap opera. Two things I picked up that were not right however, and it's great to catch out the experts in these things as it makes one feel so smug. Firstly in one scene at a village flower show, held in a church hall, all the men were wearing their hats.
Secondly, the gentleman's gentleman who cared for the Earl, referred to himself as a valet with the last syllable sounding like "let." This is an American pronunciation and in fact it would be pronounced va - lay! Trust me on this!