RobJC
Check your weapon
The more emotionally 'North' you are - that is the colder and more detached your temperament - the quicker your preferred tempo too.
Northernness also correlates positively with size of anorak and quite coincidentally - because of cheaper rents - extent of record collection.
I think you'll find that Brighton is the exception that proves the rule.
Surely its a heat thing? - the further north the colder it is = dance faster to keep warm
Simple?
or possibly due to rate of change regarding to scenes - the further north the less factional dance music is, therefore the more established forms hang on for longer - not a judgement, mearly an observation. Of course, there are exceptions and what piece of consumer journalism doesn't tend to generalise any theme anyway?