sfmans: the point I was making is that the sounds associated with e-ceilidh come from a folk revival mash-up of various musical traditions largely from south and east of the Cotswold/Wash line (obviously, in the main, East Anglia, Sussex (Scan Tester) and the Cotswold morris tradition). This new style was developed/adopted by many people outside of that area, eg All Blacked Up who do of course come from Shropshire. The Plain Brown Wrapper Band are resolutely north-west, and do have stylistic elements from that region which separate them from the mainstream "English Country Music" sound.
The Boat Band plays in a style highly influenced by northern traditional musaicians, and also by southern revivalists! Baz Parkes, who calls for All Blacked Up and the Boat Band, could doubtless pinpoint these differences.
I will be very interested to hear Les's Chorlton Big Band, and spot the influences there!