Security staff are courteous and efficient. However airbridges are rusting and in a decrepit state seating at departure gates is filthy and very uncomfortable. The toilets whilst cleaned regularly are in need of a major overhaul as fittings are worn. Overall the general feeling of Glasgow Airport is worn-out grubbiness that nothing but a complete refit will fix. I also don't understand the system for the gates which Flybe and BA use where you have to show your boarding pass (again) to get there and when you do there's very little in the way of food/drink available other than the overpriced bar at gates 19 20 etc. However the worst is the gauntlet of duty free to get to the gates. It's very cynical and annoys me that BAA seem to care mostly about the retail part of their operation.