(27 Oct 2023, 3:55 pm)Unber43 wrote So the Durham Coast Line - Nunthrope to newcastle will no longer continue to Hexham?

That’s almost right. It would be like this; -

Newcastle to Ashington (2 trains per hour)
Newcastle to Morpeth (1 tph)
Newcastle to Hexham (1 tph)
Newcastle to Carlisle (2 tph)
Newcastle to Middlesbrough (3 tp2h)

The same ‘hub system’ for Northern will also be created at Middlesbrough and Darlington with through trains being removed. It’s all about making delays self-contained. This won’t affect Transpennine services to Saltburn.

The other salient point is that Northern are acting as project lead for a national regional stock procurement plan, with the aim of replacing all 15x trains, probably with a mix of bi-mode and battery technology.