In message
, at
10:25:45 on Mon, 23 Nov 2009, Chris
remarked:
Or is there some microscopic wriggle-room that decides a Heathrow
Connect train is "overground" as far as H&H, but then becomes something
else (surely not "underground, wombling free") thereafter?

There is - from Hayes & Harlington, the service is operated privately
by BAA, not an ATOC company.

Unfortunately, the Minister mentioned "ALL overground services". The BAA
service is not very obviously a not-overground service.
--
Roland Perry