I actually think there may have been more major Drama from BBC London set in Aberdeen than BBC Scotland. I can think of "Rough Necks" from BBC London and eh nothing from Glasgow.
'BBC London' doesn't make any drama. Departments of the BBC that are based in London do.
That's quite an important distinction, the network production departments have never just made programmes set in the location they are based, whereas a national production department will.
Ultimately for the audience it's where the programme represents that's important, not the location it was commissioned, produced or edited.
Well apparently it mattered politically in the BBC at the time. The story was that BBC Scotland weren't happy that this network commission was made with crews and equipment from down South shipped up and not them (in any way involved).
There are turf wars in the BBC, maybe more in the past than now e.g "Murder Rooms" series from BBC Films. Despite being pretty popular wasn't recommissioned, as series Drama isn't supposed to be done by BBC Films but by the Drama dept (or so the story goes)
I guess my point was you'd think BBC Scotland (over many decades) would have made more shows in Scotland in one of it's major population centres than BBC London but in drama that maybe isn't true. Just illustrative of how Glasgow centric they are and seen as by lots elsewhere in Scotland.
I always had the suspicion that they think if they properly distributed their resources around Scotland it would dilute (in their eyes and maybe financially) their ability to be a bigger fish by having a larger centre.