ValleyLines142
Established Member
While other trains run in multiple without corridor connectors, I don't think this should be done unless the units are coupled for the full length of the service (ie. no splitting to serve different destonations or leaving some coaches behind with the others continuing over less-busy sections of the route). That avoids problems with passengers accedentally (or because the train is about to leave) boarding the wrong unit, since both units go to all the same places. There will also have to be duplicated revenue protection (although if all the stations on the route are gated you don't need this) and catering staff.
The Manchester services wouldn't be 'splitting' services anyway so that meets your point about units being coupled for the full length of the service. I can see the point for the Cambrian Line services as these split, but not on the Welsh Marches Line as such. The way to resolve the problem regarding boarding the wrong portion is to arrive at the station early :P