Running a staggering three hours late, 66037 runs along the up relief line at Circourt Bridge, Denchworth, on 27 April 2016 with the 6A15 05:05 (actually 08:10) Westbury to Appleford Mendip Rail stone train. The Great Western Mainline electrification scheme continues at a snail's pace. Whilst the masts in the background have been in situ for several weeks, the only additions during the last weekend possession appears to be the mast near the rear of the train, and another just out of the picture to the right.