There's a few semaphore signals left on the Hexham line. There's no significant junctions the whole length of the line, but there used to be, and it's double track, so I imagine under normal operation it doesn't need much attention.

A lot of the infrastructure has been reduced to short sidings and the like for engineering work. There's also crossing points between the tracks which spend 99% of their time normal. I suppose if you're at a possession to work, there's no real need to electronic signals.