56091 & 56312 pass Charlton-on-Otmoor on 14 June 2013 with the 6Z91 10:53 Calvert to Willesden Euro Terminal empties. 56091 had worked the final 6Z92 Didcot Power Station to Calvert flyash the previous evening, but instead of bringing its MBA wagons back as expected, it is pictured here with failed 56312, and its JRA wagons from the Willesden to Calvert spoil train. This recently cleared location on the single track Bicester to Oxford line was the one remaining location that I had not got around to using for the flyash empties. This final chance to get the picture, albeit slightly different to expected, proved to be an ideal choice for a broadside view of this unusual double header.