Dropping someone off at UK airports can cost more than you think—on average,...
https://mylessmasternews.nexorafield.com/posts/is-it-ever-worth-paying-the-barrier-fee-when-you-are-running-late
Dropping someone off at UK airports can cost more than you think—on average, it’s around £6.51, with Gatwick charging up to £10 and Heathrow about £7