But the “late” 701/710/720/730 aren’t really wanted by the operators though who don’t have work for them in the current timetables post Covid or aren’t ready for them to enter service awaiting training agreements (etc), so I’m not sure you can draw much from it to say it’s a builders issue, certainly without seeing much confidential paperwork!
This is true, there is definitely no apparent rush by many TOCS to get them into service.
LO have only just needed the last of the 710s ready for the service enhancements for the East London Line. Though I am a little concerned availability won't allow it.
GA maybe had an easier way forward, just ditching their old trains in favour of an almost 100% homogeneous fleet of 720s. Just rural (using 755s) and intercity (using 745s) not covered. At this stage, Alstom will be just working through the leftovers.
730s look to be next in the queue for arguably needed. As Birmingham area train more crew up I expect the 730/0s out of Euston to happen less, thus leading 730/2s appearing in service.
I assume there are 350s to go - How long is left on the lease for the 350s expected to be handed back ?.
Still a lot of 730/0s not used much, which puzzles me as I think almost all are fully accepted and have been used. That's only 19/48 in use in the West Midlands (The other 29 comprise 8 on loan to South WCML and 17 not in use and 4 on what appears to be testing)
701s there are plenty of hurdles.