Thinking of dropping someone off at a UK airport? The average charge is around...

https://tiny-wiki.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? The average charge is around £6.51, but it can be as high as £10 at Gatwick or £7 at Heathrow