Ian S
Thinks s/he gets paid by the post
For most private transfers I've seen, you have to estimate the time it takes for you to get through customs although some will at least monitor your flight arrival and most have some flexibility as to how long they wait before you become a no-show. When we flew into Heathrow in 2018, we were very early (tailwind I guess) and we ended up waiting over an hour before our driver got there. With all that uncertainty, I'm wondering if it would be better to go with Uber or even a Black Cab instead since you don't have to guess in advance, you just arrange Uber or go to the taxi stand when you are ready. The Gett app looks promising for a Black Cab -anyone use it?