All very true, throughout most of the day.
That is the hazard when running high speed, long distance, high capacity services through any long rural area.
But my winge was directed at the 2 hour gap after 7pm during which time no passenger services travel from Edinburgh to Berwick (or beyond) and that gap is followed by just one service at 9pm.
That doesn't provide much opportunity to delay anything! There's nothing to delay!
So the question remains just one of demand, which as silentone has indicated begins to evaporate after Dunbar, or a political will to assist the region's regeneration by providing a rail service after 7pm that consists of more than just one train; that has been and remains my argument.
Dave, I wasn't meaning to sound like I was arguing about the two hour gap in the evening, sorry, just making a general point about the daytime.
A FSR EMU leaving Edinburgh just before 20.00 should fill your gap and connect at Newcastle with the 21.33 TPE service for Manchester Airport (via York, Leeds etc). The FST EMU could then connect with the 18.19 ex Kings Cross which arrives in Newcastle at 21.27 to provide a northbound service from Newcastle. This would give a marginally later London - Edinburgh service on Monday to Thursday (all of this is based on the current timetable, I don't want to comment on the new timetable until I'm sure of everything being on it)
The marginal costs of running an EMU should be lower, which could make this more feasible (bearing in mind it'd be under half the length of the 225s. If it works then potentially consider running some of these as "through" services instead.
As an alternative, if TPE extended their last Manchester Airport- Newcastle service of the day to Edinburgh, it'd connect with the 21.00 ex Kings Cross (arrives in Newcastle at 00.41, compared to the TPE which arrives at 00.56), so would provide a much later London - Edinburgh train. A 185 should cope with that no bother, and then run an early return to Newcastle/ Manchester Airport the following day.