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

https://wiki-burner.win/index.php/Does_a_Minicab_Fare_Include_the_Airport_Drop-Off_Fee_or_Is_It_Added_On_Top%3F

Dropping someone off at a UK airport can cost around £6.51 on average, but places like Gatwick can hit £10, and Heathrow around £7. We’ll break down how these fees compare to parking, including free windows at Long Stay and Park & Ride lots