I think there are two separate issues here. One is the fault that causes the closure or reduced capacity of one or more running lines in the first place, the other is how FGW▸ responds to this and runs the best possible service it can - and keeps the passengers informed. How well FGW responds comes down to its resources in Control and elsewhere.
As disucssed elsewhere, FGW has cut back on train crew supervisors and other key posts and probably doesn't have the necessary resources to deal with major disruptions as well as say, Thames Trains did a few years ago. What they manage to run, and what information they get out to their own staff and the passengers, will probably be less than what they could have delivered if they had sufficient resources. So FGW need to be careful about putting all the blame for passengers' disrupted journeys on to NR» .
The failure, looked to me as I went past on the 16:22 Padd - Oxford on the points from the DR to DN Heathrow there were a number of NR tech working on that point machine. It was getting dark so I can understand closing the relief lines to give the staff a safe place to work and allow any testing.
I can understand a number of trains will get trapped in the affected area, but I stood on Slough station for a stopper to Maidenhead for close on an hour with out any trains in the DN direction, no attempt to turn any of the UP trains at slough to clear the backlog absolute pooh customer service from the FGW station team they seemed to be eat McDonald's and relying on the
CIS▸ auto announcements.
When a 3 car 166 did arrive it was packed not every one got on, people were left at Burnham and someone could not get off at Taplow as they we sitting in the middle of the coach.
It may well be appalling infrastructure performance on the part of NR, FGW certainly at Slough did not do them selves any favours; I will say the drive of the train was excellent with the on board announcements apologising for the over crowding and asking folks to move right inside