If FGW▸ dropped that Brighton service and left it to Southern that would free up one unit for use elsewhere.
No can do without the
DfT» 's say so. The Brighton services are part of the Service Level Commitment within the franchise specification. The first service to Brighton has to originate from Havant or before.
Indeed ... how far does the service have to go? I'm not sure if it's still the case, but I understand there are / were some refreshed third rail units (class 508?) parked up at Eastleigh and available for hire. One muses about the idea of using electric trains on an electrified line - to the layman such as myself it seems a bit obvious to do so.
Now there's the age old question that would be raised about using a special type of train for a single specific service and all the spares and maintenance issues that follow with it, and I can't really see First wanting to run 2 x third rail units in their fleet - one running and one spare / repair. However, do what was done to the local services that call at Dean and Dunbridge and transfer the service to South West Trains, and run them from their Southampton Depot and you've mitigated the problem somewhat. And you can also get start to remove the "single service" issue by using another unit or two for local services in the Southampton / New Forest area. There's a weekday diagram for a 158 diesel to Lymington Pier which is essentially all electric. And I think there may be another such diagram. And ... before you know it, you're looking at a viable fleet of available trains, releasing 5, 7 or more carriages of 15x class diesel stock.
Losses from these changes? An early morning Portsmouth - Havant which (if I read the previous post correctly) isn't a franchise requirement. Not sure how busy that service is? And the through-ness of Brighton to Malvern. Alas, that service so often seems to appear on our map at the top of these pages as starting or ending short or ... as as the other day "this service will be terminated at and restarted from Westbury". Good in terms of serving everywhere, but a bit of an issue for through passengers as the retorted service left before the original arrived, and Westbury doesn't yet have time tradel facilities