Hmm yes but then Northern are seemingly going to get the all the WMT 323s so is it really worth clearing the 365s on the relevant routes, training all the crews to operate them (considering Northern already have quite a big training load at the moment!) and then withdraw them anyway in a year or two? I'm not convinced that it is...
Agreed Northern won't be a problems area.
Delayed new stock, PRM, delayed cascades and electrification spring to mind above adding stock to relieve crowding or add new services.
47421 as pointed out the Anglia difficulties and then there is extra stock for Meridian Water shuttles given the HIF funding announced last week.
GWR looking tight for 769s by December so a few 365s to smooth things over.
EMT temporary home till 360s arrive or back fill 360s at Anglia.
SE Refit 3rd rail gear to some? to get a few more 12 car metro trains.
WM With recent suburban electrification stock thin on the ground so a few to add capacity before the new Aventra arrive.
Scotrail a few more units when electrification gets going again.