Interesting info. For whatever reason, I had just assumed (yes, I know...) that Xrail would go to all terminals. I guess I figured that any project worthy of tearing up the City and West End for years on end might also merit a bit of digging at one of the termini(i?).

I do hope that someone, in all this planning, comes to realise that it isn't common for several airlines flying in and out of LHR to include terminal information on BPs/itineraries. I live along the Piccadilly line and I see tourists daily who never knew they needed to know which terminal until they hear the announcements on the train. I am only mildly well-travelled by FT standards, but I don't recall another airport where knowing your airline and whether you need domestic or international wasn't enough information to plan your journey. The problem isn't a lack of information available on the Heathrow website, or that hoteliers aren't aware, it's that not enough people know they need to check first. BA travellers exempted, of course.

If Xrail is going to miss out terminals (unlike the Piccadilly line, where even if one is on the wrong train one can change easily), I'd hope to see directories with info for departing tourists. But more than that, I think I would have liked to see it go to all three stops.

Feel free to tear me apart for my ignorance...