For info, it's the car park security people who create problems at Gatwick. Had a problem with them some years ago whilst sitting in my car watching the arrivals waiting for my wife to arrive! Told by security to drive off or leave my car and go into terminal. My sin was that I had a pair of binoculars. I replied that I was a paying customer and I had every right to remain in my car. They threatened me with calling the police and I invited them to go ahead. The police and I had a very interesting chat and they fully agreed with my right to remain in my vehicle. However, as it's their property, NCP (or whoever it is at LGW) have the right to have me and my vehicle removed. The police had absolutely no problem with me looking at aircraft on approach from my car but the car park security did!