This from the MOD website
Areas into which low level military aircraft are not permitted to fly are known as avoidances. They are approved at Ministry of Defence Head Office for one of two reasons: flight safety or disturbance. The avoidance areas surrounding major airports and busy airfields, helicopter landing sites, and glider and microlight sites all fall into the former category.
Major built-up areas (generally those with over 10,000 inhabitants), certain hospitals, and some important conservation sites fall into the latter. A number of industrial sites where potentially hazardous activity takes place are also granted avoidance areas.
Strange...
I have seen Tornado flights over Glasgow before, but the last I can think of was for the flyover for the Queen's Golden Jubilee vist. Three jets coming low over George Square and heading up Duke Street was something you dont see evey day
Might have some more info about yeterday's flight later.
*value of posts can go down as well as up.