Originally Posted by
inOban
I was specifically referring to MAN. Of the other routes, BHX is vulnerable only because many people find it easier to city centre stations than out of town airports. Within central England, air is viable because Cross Country services are still so slow; frequency is fine. EXE is supported by being Flybe HQ.
Not absolutely sure what you mean ref. BHX. EDI is excellently connected to the city by the trams, and BHX by "proper" trains that run at a very high frequency to Birmingham New Street.
Even given the ever growing faff of airport security routes as long at EDI / BHX will never face real competition from rail, unless HS2 finds it's way north of the Border, which if it happen will be long after we're all dead!! GLA is slightly less well placed, with a road trek from Glasgow to the airport.
Not sure where EXE is, but EXT to MAN will never face real competition as the rail line doesn't go near London, and as such will never benefit from proper express trains. If the demand is there, the route is secured from rail competition.