Ever wondered why the A1 has a number of roadside sex shops? Here's Vice's Matt Blake to explain. Turns out the premises - often former Little Chefs - are in many ways ideal in terms of location (sufficiently far from schools and homes), size and ability to attract passing trade and afford relative anonymity to customers.
Less obvious to the untrained eye are the road's two swingers' clubs. Just be careful where you stop in search of a cup of tea or bed for the night, in case you end up with rather more than you bargained for.