165039 climbs away from Gavray Junction on 8 August 2020 with the 5Z14 10:02 Bicester Village to Bicester Village Chiltern Railways ECS. It would shortly come to a stand near Bicester South Junction, then the driver would change ends, and it would head back to Bicester Village, in order to form the 1T19 10:15 departure for Oxford. This method of operation was in force due to the closure of the Bicester to Princes Risborough line for engineering works.