Could Bristol UAS not move to -ahem- Bristol Airport? Or even RNAS Yeovilton?
When the Tutor replaced the Bulldog across the UAS/AEF units, a single national contract was placed for the supply and engineering support of the fleet. That had some expensive consequences, as the owners of several sites refused to let the new contractor onto their airfields. Thus, Cambridge UAS & 5 AEF had to leave Marshalls and move to the specially re-opened Wyton, Bristol UAS & 3 AEF had to leave Filton and move to Colerne - where the airfield was re-opened for them, and a hangar cleared of asbestos at enormous cost. There may have been others.
Glasgow - I've had no recent contact, but when I was airline flying out of there in the 90s the UAS could fly only dual sorties because of the intensity of airline traffic. Central Scotland has few airfields; how they did solo, I don't know. I doubt it has changed.