The Gatwick website
gatwickairport.com/to-and-from/picking-up-dropping-off/ has this explanation for the charges:
"
Why are we charging for Drop-offs?
...sustainability remains important to us as an airport. Encouraging more sustainable journeys to the airport, the drop off charge will help Gatwick achieve its sustainability targets..."
So trying to make the airport more environmentally friendly, what could be wrong with that?
