I don't know them, frankly, Stu - I've watched and listened to "English country dance" (and at least we AGREE! on not calling it "ceilidh", which my late English Godmother, who did learn ECD at school, had not even heard of) but that's about it, at this stage...; and I only play a couple of dance tunes as song intro's - "The Northumberland (NOT "Northumbrian", for some reason) Bagpipes" and "English Country Gardens" - having fitted the words myself to the Morris tune from a Bert Cleaver/Morris Ring book.
What I can say is that the name "Jerusalem" doesn't stop me playing and singing "And did those feet in ancient times...", as part of my English hymn repertoire, each weekend (same link).