66149 passes Yarnton on 20 January 2014 with the 3F01 12:02 Fenny Compton to Marchwood special priority MoD stores. I had chosen this location as the angle of the sun wouldn't matter, as it was totally cloudy. Naturally, as soon as I had walked across the field to the bridge, and it was too late to go anywhere else, the sun started to appear!