The reason I mention this at all, incidentally, is because apparently someone on Facebook created a 'national belm day'.
http://www.facebook.com/event.php?eid=132290543506164
The day's passed for this year; I was sent a group invite a while back but given that I'd rather scrub my gonads with a rusty cheese-grater than spend quality time on Facebook, I ignored it until this morning.
Anyway. Point is, the creator claims that the belm originated in Blackburn, and I thought *belm*.
To the uninitiated, there's some quality belmage examples on the site, worth a look.