RE: Northern (Arriva Rail North)
The main issue with Northern in the north east is the Durham coastal line which won't be fixed unless northern finds a way to make the Service more frequent on that line which can't be done with them sharing tracks between Sunderland and pelaw Junction. The only way I would see that working is some sort of agreement between Northern & Nexus to withdraw the metro on this section or make it less frequent on this section as well as Northern running extra carrridges.