Originally Posted by
Gagravarr
I believe it's called the Heathrow Freeflow free fare zone.
You can see all the bus routes serving T2/T3, along with the stops that they make in the free zone, on
this map from TFL. (There are other buses that are free in the zone, for T4 and T5, that map just does the ones serving the central terminals)
Oh, brilliant. Thanks - I thought I'd seen that somewhere before. That's exactly what I was getting at.