165016 & 165034 approach Wendlebury on 20 April 2024 with the 1Y21 0812 Oxford to Marylebone Chiltern Railways service. The 22¼ milepost is measured from the junction with the West Coast Mainline at Bletchley, although at present the section from Bicester to Bletchley is still being reconstructed as part of the East West Rail project.