47727 Rebecca passes Brookfurlong Farm, between Oddington and Islip, with the 6T99 09:31 Bicester London Road to Hinksey ballast empties on 19 December 2013. 66510 is on the rear. This train is in connection with the works to construct a new curve between this line (Oxford to Bletchley), and the Chiltern line at Bicester. A cloudless morning at a remote rural location, so what could possibly go wrong? The answer is a Network Rail van driving along the course of the former up line from the Islip direction, and steadily getting nearer behind me, just as the train was approaching! Luckily, the driver stopped and waited until the train had passed - very considerate.