Running 35 minutes early, 166216 leaves Long Marston on 31 July 2015 with the 5Z12 12:00 Long Marston to Reading Traincare Depot First Great Western ECS move, returning to service after having various modifications carried out. The Class 166s are having their air conditioning equipment upgraded at Long Marston, so presumably the whole fleet will visit here in due course. The crew had brought in 166203 for attention, which can be seen in the background. This ran as the 5Z11 09:27 Oxford Down Carriage Sidings to Long Marston, but unfortunately due to some early running, and more importantly as far as I was concerned, a closed road near Honeybourne, I did not arrive in time to see this unit travel up the branch.