https://www.telegraph.co.uk/news/2018/12/21/gatwick-airport-drone-chaos-flights-cancelled-delayed-latest/
Detectives were understood to have drawn up a shortlist of potential culprits after the pilot gave vital clues away by audaciously flying the drone right up to the air traffic control tower.
In a move known as "buzzing the tower", it emerged the perpetrator had taunted airport staff by circling the drone around the building and flashing its lights, an industry source told The Daily Telegraph.
A detailed description of the drone, provided by witnesses, meant experts were able to determine the make and model of the machine, which is only available from a handful of locations in the UK.
Police sources suggested two drones had been sighted "in airspace" near the airport shortly after 5pm, with one flying off in the direction of the M23.
The airport authorities quickly launched one of their own drones to track and divert any hostile device and the airport was able to reopen around 40 minutes later.