(24 Dec 2014, 3:50 pm)Dan wrote Observed the diversion today and it did actually seem to help - buses getting through a lot faster than they would via the usual route.
I noticed that Stanley were providing Volvo B10BLE/Wright Renown 4902 for short runs between Newcastle and Metrocentre earlier, allowing customers to get to the Metrocentre from Newcastle when a bus had been regulated on its trip to Newcastle.
That explain's why it was sat NIS.