This was a first for me, seeing the 4 Class 20s and new underground stock. During the day the train was stabled at Dorridge, on the way from the Old Dalby test track to Amersham. Fortunately it was possible to take photos from the platform, and Dorridge is quite convenient for me as it is within the limits of my free rail pass!
20305 & 20302 were the easiest to photograph:-
