In message , John Rowland
writes

Anyway, I'm still surprised that T4 station is closing to passengers a whole
day before the engineering possession starts. Some of the wheelchair
passengers who decide to get the tube to T123 and then the HEx to T4 will
end up being taken non-stop through the T4 station. They'll be rather
annoyed, especially if they miss their planes because they didn't know in
advance that the possession was taking place. And they'll be even more
annoyed if they ever find out that LU shut T4 station a day early just so
they can get their trains all pointing the "right way around", when every
Picc depot seems to have coped fine with trains in random directions every
night since 1987.

But the difference is that after the 7th, they won't have any way to
turn them if they need them the other way, except a long drawn out
special working.

Currently, if they need one turned round (which is quite common) they
get a spare man to run it round the loop out of service.
--
Steve Fitzgerald has now left the building.
You will find him in London's Docklands, E16, UK
(please use the reply to address for email)