And here I am
As has already been mentioned, English/British nobility for much of the middle-ages was essentially French; French names are nothing particularly notable in real history and for most of the middle-ages English royalty used the fleur-de-lis as part of their heraldry(it's part of the crown jewels). Likewise "Leocoeur" means Lion Hearted... which has far more connotations to English history and royalty then it does French (and the quest where he received his name is a clear Arthur parallel). There are enough French heroic legends to use rather than relying on Arthurian tales.
I'm also not convinced that militarily they're closer to France. The use of big columns of charging knights isn't uniquely French (if summed up much of England's success against Scotland and Wales in pitched battles) and one of the Bretonian's classic formations includes arrowheads of longbow men... something that is pretty uniquely English/British (at least after the conquests of Wales).
I just can't see High Elves as a stand-in for England/Britain. Their lore and fluff just doesn't have a English/British flavour to it and their armies (small number of elite troops, skilled and dangerous but fragile) doesn't correspond to Britain other then the fact they have good archers. Neither do their aesthetic tastes. I see them far more as a stand-in for the medieval idea of a lost Atlantis rather than as a stand-in for any actual nation/country, although there could arguably be a (somewhat weak) argument for them to be a stand-in for Rome/Byzantium (although that conflicts with seeing the Dwarfs as Byzantium) or possibly the Christian realms of the Iberian Peninsula.
Yeah, he's right on all counts.
After the death of Harold II in the Battle of Hastings (1066) England was ruled as a French (Norman technically, a bit of a different beast if you ask the French) Barony until about Henry V. It had been English before then, but Henry V is about the time when quintessential "English" culture started to spring up.
While charging knights isn't a French invention by any means the idea of charging knights with lances is. Again 1066 was the first recorded instance of stirrups being used in Western combat. Careful examination of the Bayeux Tapestry (Oh, God I hope I spelled that right, or they're going to take back my degree) indicates that William the Conqueror's (formerly William the Bastard Son of Robert the Devil), forces were the first to use the couched lance as a tactic, and many believe this is what aided the Normans in breaking the Saxon shield-wall.
A lance strike without a rider in stirrups only hits with about 40lbs per square inch. That's barely better than a professional carpenter with a hammer. A rider with stirrups can hit with about 4,000 pounds per square inch. That'll break a shield, the arm holding that shield, and the ribs of the man who owned the arm and the shield.
Still, I don't think I ever intended Britain or France alone to carry the Empire of Man in the steampunk version. I just pointed out that the uricaniforms of Britain, America, and France would be good sources for the Colonial Guard (the Imperial Guard stand-in).