Falcon1200
Established Member
think GWR have done that already Hereford-Worcester-Paddington?
You missed out Oxford !
I can't really get excited about through services which involve a reversal in a terminal station such as Ayr to Edinburgh via Glasgow Central, as you still end up with a long dwell at the station. It is also awkward to timetable.
Through services such as some of those suggested are an operational nightmare, because unless Traincrew work throughout, any delay or disruption causes the service to fall apart and spreads chaos throughout the network. In some places it is unavoidable, eg Thameslink and the Glasgow Central and Queen St Low Level routes, and of course benefits those wishing to cross the city concerned, but that is a minority of passengers.