Unfortunately corresponding with a cloudy period, 56303 passes Lock Wood, Culham, with the 6Z91 10:53 Calvert to Didcot Power Station flyash empties on 14 March 2013. Obviously if this had been a 'Shed' hauled train I wouldn't have bothered to take the picture in such circumstances, but as this is a short term flow, with interesting traction, every shot counts!