Class 37403 refurbished spare power unit being lifted back into the loco on 30th April 2021.
Photo updates at:
https://realrail.smugmug.com/Trains
Very Freaky moment at 6 min 43 seconds with a Harry Potter dementor in the clouds above the power unit.
The cold start of the loco after power unit installation can be seen at:
   • 37403 cold start and test run,  4K