Roland Perry wrote:


You'd probably have to look for Heathrow Airport strategic travel plans.


This article is quite dated, and I'm not sure the detail about fares is still
valid, but it does show there was intent to protect HX.

http://www.railwaygazette.com/news/s...o-takeoff.html


"Because Heathrow Connect services will not be advertised as through trains and
will always be overtaken en route, Murphy believes most London - Heathrow
passengers will continue to use the fast trains. There will be no through
tickets other than the full Heathrow Express fares."