In message
, MIG
writes

Assuming that it happened at a time of day when most trains were out,
where are they parking the ones that can't get to Upminster, can they
walk them through somehow?

They had 4 D stock trains in Northfields depot for the last few days but
a couple disappeared today. I gather some C stock was stabled at
Neasden.
--
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)