With a sprinkling of snow on the ground and a thick layer of frost on the grass and trees, 43181 Devonport Royal Dockyard 1693 - 1993 passes Bourton with the 07:30 Swansea to Paddington First Great Western service on 29 December 2000. The fog which can be seen in the background had only just cleared when I reached this spot, but of course it was the fog during the night which caused the build up of frost on the trees.