A gnarled old oak tree, complete with abandoned rookery makes a perfect frame for 66137 as it passes Uffington on 24 April 2010 with the 6B33 12:12 Theale to Margam Murco oil empties. I had carefully positioned myself to include a slightly wider view than this in order to get a full length train in the picture, but as I half suspected the train was actually running as a short formation (as it often does on a Saturday) and therefore I changed position slightly at the last minute to include more of the tree. This twenty tank train is within the capabilities of a single Class 66, whereas the full length version isn't, hence the use of pairs of 'sheds' instead of the required Class 60.