ordalie:
Sorry but I just don't understand drop off and pick up.
Drop off and pick up are when you don't drive yourself to the airport but get somebody else to do it thus avoiding the need to park your car there for the duration of the trip.
Stansted, like many airports in the UK operates a procedure where if you are being dropped off at the airport the approach road is gated and to leave you have to pay a £2 charge. It is still cheaper than leaving your car parked in the Long Stay Car Park but it used to be a free option. To be dropped off without paying the £2 you have to be dropped further out and bussed in. I am not sure if the bus ride is free of charge but suspect it probably isn't.
Ironically the two largest London Airports Heathrow and Gatwick are allowing free drop off and pick up.
According to a recent news article the UK Airports make more money from the Car Parking charges than they do from the Airlines.