Dropping someone off at UK airports can add up—expect around £6.51 on average,...

https://www.cast-bookmarks.win/thinking-of-dropping-someone-at-a-uk-airport-on-average-it-costs-about-6-51

Dropping someone off at UK airports can add up—expect around £6.51 on average, with Gatwick charging £10 and Heathrow £7. But pick-up fees can be different, so it’s worth checking both