Hi Gary,
First of all thanks for the update to Glasgow, I actually used version 2 in FSX more than any of your other airports believe it or not, it has always been a great looking airport and it looks fantastic now in version 3.
I've spotted a small error at holding point W1 (the taxiway that leads off to the GA apron), the stop lines extend onto the grass and the runway advisory signs seem a little large or maybe just too close to the taxiway for a narrow GA taxiway.