Lancashire/Cheshire is exactly where the tradition comes from originally, but it's probably quite possible to exist in that bit of the world and never see it :-) These days, teams all over the country dance in that style, and quite a few of the better-known ones are from further south... mine's based in Watford.

There's a decent/recent video of us dancing here (although I wasn't there that day, so don't feature in the video...)