Dropping someone at a UK airport can cost around £6.51 on average, but at...

https://hotel-wiki.win/index.php/Is_It_Worth_Asking_Family_for_a_Lift_if_They_Have_to_Drive_Twice%3F_Understanding_Airport_Drop-Off_Charges_and_Alternatives

Dropping someone at a UK airport can cost around £6.51 on average, but at Gatwick it’s closer to £10 and Heathrow about £7. We’ve broken down drop-off versus parking prices, including the often-overlooked pick-up fees