Dropping someone off at a UK airport can vary quite a bit—think £6.51 on...

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

Dropping someone off at a UK airport can vary quite a bit—think £6.51 on average, but it’s around £10 at Gatwick and £7 at Heathrow. We break down how costs compare to parking, including pick-up charges you might not expect