Roland Perry wrote in
news
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.

An I alone in thinking that the map

http://www.tfl.gov.uk/assets/downloa...in-London-Jan-
2010.pdf

is actually rather misleading on this point? It's title is "Oyster rail
services in London" yet Hayes to Heathrow is shown in exactly the same
style as Paddington to Hayes. Likewise the line style doesn't change at
Hayes so a quick glance suggests Oyster will be valid to Slough; yes, there
is a note saying it isn't but the use of (say) a dotted or feint line would
make this much clearer.