"Stephen Sangwine" wrote

Looking at the diagram, OOC station is right next to North Pole depot,
which has lain empty since Eurostar vacated it to move to Temple Mills.
Suddenly it looks like the depot could once again be used for TGV-type
train maintenance. All that would be needed is a connection from HS2
on the other side of the GWML, and since HS2 will be in tunnel east of
OOC, a spur in tunnel coming up inside North Pole would be feasible.
Alternatively, a flyover from the station box, à la Stratford
International,
could cross the GWML and come down inside the depot.

It seems that North Pole has been pencilled in as the depot for GW IEPs,
with HS2 trains being maintained at Washwood Heath.

Peter