Bletchleyite
Veteran Member
But they can go by train anyway - ECML or, indeed using Northern's services on the S+C
Going from Preston to Scotland by train if the WCML is closed is not a very easy or particularly pleasant undertaking, though, involving 3 changes, and often not even a Permitted Route (though that itself could be fixed by adding more engineering easements).
Don't get drawn into the trap of thinking every IC journey has London at one end!
Would be easier if there was an all-day DalesRail service (Preston onto S&C) I suppose, but classically that's always gone to Leeds.
I certainly do think, though, that for all engineering work involving buses, any reasonable rail alternative should be Permitted on all walk-up tickets including TOC-specific ones.