Excuse Me Sir.......

Down to Aberdeen today as heading off to a wedding. Running out of time for a Blip so headed to the roof of the Union Square Shopping Centre car park foe a snap of the NorthLink ferry that would be leaving for Shetland later. Almost immediately advised in no uncertain terms, but politely, that photography was not allowed anywhere on Centre premises. If I wanted to take a photo I had to email the Centre and obtain permission. All to do with security threats apparently. My question for Blipland is, is this common? Must be difficult to enforce with camera phones and the like. There were no notices advising of the rule.