Under a very dark sky, 66539 passes the site of Uffington Junction station on 4 June 2011 with the 4V50 05:08 Southampton to Wentloog freightliner. I could not believe how the completely clear sunny morning changed to 100% cloud within just a few miles, as I was approaching from the Farngdon direction. It did mean however that my original choice of location a little further up the line was abandoned in favour of this spot, which can only be photographed from the north side of the line and therefore needs a dull day. Always look on the bright side (or not in this case!).