37116 passes Cornbury Park on 5 December 2018 with the 1Z22 08:14 Tyseley to Bristol High Level Siding Network Rail test train. 37219 is bringing up he rear. I had deliberately chosen this location, as the train would possibly be pulling away from a brief stop at Charlbury station, which can be seen in the distance. Although not booked to stop, it often arrives early, and the GWR HST coming off the single line is often delayed, resulting in at least a signal check. However, although the HST was just a minute late, the test train was three minutes late, which was just enough to give it a clear run. It was therefore travelling at full line speed, which required a high ISO to allow the use of a shutter speed of 1/2000sec. At least the forecast rain didn't start until I got back home!