That's interesting. What British style evokes in your mind is more recent and contemporary, perhaps, than the earlier styles I was alluding to, from the mid-twentieth century or therabouts. And certainly more of a town look than the English country gentleman look that is reflected in Trad.There are also different British styles. Huntsman will dress their clients in a manner quite radically different from Anderson and Sheppard, for example. And similarly, there are different American styles. In a sense we are looking at a style that is more or less frozen in time (some might even say fossilized, LOL).I like the Anglo-American idea and agree there are deep roots in Britain. I find it interesting, however, that mention of British style evokes in my imagination navy suits with suppressed waists and double vents, trousers without cuffs, black oxfords, spread collar shirts with French cuffs, and highly fashionable ties, all lovely but not appealing to certain American Trads, even though they love their Shetland sweaters and Barbour coats. We are an enigmatic group with several subgroups.
Actually, the problem with Anglo-American or even American is what you have put your finger on -- it is too general and there are too many subgroups. But if you add Trad to either label, then you have pinpointed a specific group with serviceable accuracy, wouldn't you say? Just thinking aloud.