Thinking of dropping someone off at a UK airport? On average, it costs about...

https://wiki-aero.win/index.php/Is_Paying_Two_Barrier_Fees_Ever_the_Right_Move_at_UK_Airports%3F

Thinking of dropping someone off at a UK airport? On average, it costs about £6.51 just for a quick stop, but Heathrow charges around £7, and Gatwick can hit £10