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

https://dlf-ne.org/what-is-the-free-long-stay-window-at-gatwick-airport/

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