168003 passes Brookfurlong Farm (near Islip) on 2 December 2021 with the 1T19 09:35 Marylebone to Oxford Chiltern Railways service. Although I don't mind photographing DMUs, the real reason for visiting this spot on a very cold morning, was to see 37800 Cassiopeia on the 5Q42 10:30 Bicester MoD to Crewe South Yard ECS, but unfortunately it was cancelled.