After already having performed one out and back trip to Moreton-in-Marsh, SB Rail Plasser & Theurer 08-16/4x4C-RT Switch & Crossing Tamper DR73916 First Engineering heads back up the Cotswold Line again on 21 July 2021 with the 09:23 Oxford Down Engineers Sidings to Oxford Down Engineers Sidings (via Moreton-in-Marsh) crew training special. It is pictured here passing Chilson.