66554 approaches Didcot North Junction on 29 July 2021 with the 6Y47 05:15 Mountain Ash to Hinksey spoil empties. 66537 is bringing up the rear. This was running 47 minutes early, which was excellent, as at the booked time the sun would only just have been glancing across the front. After depositing the wagons at Hinksey, both locos went light engine to Stoke Gifford.