How did we get here?
1) Liverpool needs more direct London services (probably)
2) Manchester services are currently over-provided regarding capacity (maybe)
3) (Mine) Paths are fully taken south of Crewe
4) Joining portions is not beyond the capability of even the current UK operators (agreed here I think)
so why not re-jig what stock we have and reinforce it where needed to get as much as we can out of the infrastructure (with a few tweaks)?
I'm surprised no-one has yet said that it is impossible/forbidden because Virgin run Crewe station and not Network Rail.
How come there are such negative responses to something which might benefit the travelling public, even if it does mean the railway has to get smart? It's just an idea that could help, given that all over the UK we are currently suffering from shortage of infrastructure capacity and inflexible train lengths. Almost the only intelligent response currently is the joining and splitting of D- and EMUs and (sadly) the similar use of Voyagers in multiple between Chester/Crewe and Euston.
Truly "not invented here."
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Anything is do-able if you want to re-write an entire timetable to fit one service group and be restricted at two locations, which you wouldn't in this case so why is it negative?
2 up trains within 5 minutes at Crewe begging to be combined, 2 down from the same operator also close together... not such a major timetable re-write after all.
(I thought the current service might have been planned so that it could be thinned out without leaving too bad a gap in the public offering. )
Restricted at 2 locations? One complaint is that WCML trains S of Crewe hardly stop anywhere anyway, and it wouldn't do any harm if the combined one was the one selected to be first-stop Crewe.