In message , at 15:09:07 on Sat, 14
Jun 2014, tim..... remarked:
(An aside - the N9 bus could be particularly troublesome for visitors
when buses go cashless next month - the least that's needed is a 24/7
Oyster vending arrangement at Heathrow's T5 and central bus station.)

Which they could sort-of do by having at least one of the tube ticket
machines accessible in a foyer of the station 24x7.

Is it not already?

I haven't really noticed if there is a gate that could be closed
between the TO and the subway that runs from the terminals to the bus
station.

Dunno. Does anyone publish maps (like the NRES ones?)
--
Roland Perry