I had similar problems with Blackpool, but I didn't have anything with me that I shouldn't have had. They even x rayed my sticks of rock. They also tried to charge me handling charges for my passengers on top of the landing fee. Strangly enough I could have planted anything I might have had on board from the walk in from the Fylde aircraft park to the fire station. As I had no ID in the form they wanted, (I don't carry my licence on a domestic flight) we were escorted back to the Fylde Park, where the jobsworth took some details from my driving licence which was in the aircraft. We must have looked dodgy characters, 2 women and a 12 year old. I solved the problem by never going back.