37521 passes Cassington on 29 November 2018 with the 1Z23 07:13 Bristol High Level Siding to Tyseley Network Rail test train. 37116 is bringing up the rear. This was running 12 minutes early, as it didn't have to wait for the 5Z12 11:35 Long Marston to Reading Traincare Depot DMU ECS, as that was, as usual, cancelled. I chose this location as the overhanging tree on the right adds to the composition, and if the sun had come out (it did a few minutes after the train had passed!), a picture, albeit backlit, would still be possible.