Its a perennial double-edged sword. If there were true spare resources, the media would howl about the railway being profligate and every MP would be demanding it be used to strengthen whatever train causes most grief in their village.
Unlikely that anyone would be aware that there were "spare" resources. It's pretty difficult to calculate the PVR of any one network, and there will always be a need for
some surplus stock, so who can say what level of surplus is "spare"?
A genuine question. Would a national operator combine one of the WMT trains with the TfW rather than maintaining 3 trains per hour between Birmingham and Shrewsbury?
The days of spare carriages that could be added to the end of trains sound good, but those trains could not have any of the modern features that rely on semi-fixed formations. The only option is additional gangwayed units that can be added/removed as needed. Gangways is what TfW and WMT have gone for with the 197/196s and what is now the norm in the commuter lands around London.
I could certainly imagine a national operator keeping 1tph fast from Birmingham to Shrewsbury and on to Wales alongside 2tph slow or semi-fast.
Extra units that can be added at busy times (ideally gangwayed, but it isn't essential, as many operators do run non-gangwayed units in multiple), but the two biggest barriers are that spare units are more expensive than spare carriages and that you need somewhere for those units to wait between the peak periods.
Theres little point comparing BR with today. BR had universal go-anywhere resources. Trains that could serve commuters, InterCity, holidaymakers, trippers, etc and in the same diagram. Privatisation killed that a long while ago.
Universal go-anywhere trains that can serve commuters, intercity and day-trippers sounds like trains that are jack-of-all-trades and not actually optimised for any of them. The reason that we have different spec stock for different types of services is that different types of services have different requirements.
Indeed. Even in Labour's plan to bring the TOCs back under public ownership as part of GBR there was no mention of doing so and it must be assumed that stock will still be owned by and leased from the ROSCOs, at least initially until a better system can be decided upon.
The prospect of
buying back any existing stock from the Roscos is for the birds. The capital cost would be immense and it would be hard to determine a fair valuation that wasn't subject to extensive and expensive legal challenges (ironic given that the Roscos
bought the stock from BR at an absolute knock-down bargain price in the first place). What is a more realistic possibility, although still not very likely in the short term, is for
new trains to be publicly owned, as Merseytravel are doing with the 777s.