Anyway, if we can move on from the dead horse debate that is 'EMUs vs. loco-hauled sets' before it resurrects yet again... If it's a debate that
really must be had again, a new thread would be far more appropriate that dragging this one down that particular rabbit hole.
This isn't the first time a TPE 68 has been seen north of the border in Glasgow, as one (030
Black Douglas) was used for light engine on driver/route training for 3 days in late January 2019 between Glasgow Central and Carlisle (Attached image is my own).
(68030 Black Douglas speeds south through Motherwell headed for Carlisle - 29th January 2019)