(26 Nov 2015, 7:29 pm)GX03 SVC wrote As the train is an electric set (Class 91 - InterCity 225) and requires overhead wires to power it which Carlisle to Newcastle doesn't have, the electric sets have to be dragged over the lines.
Ah that makes sense!
Why allocate a train to a route it can't do, or was there some kind of diversion in place?