51875 leads the 13:33 Marylebone to Banbury service past Dorton on 5 September 1984. A sleepy backwater at the time, with the majority of trains only reaching Princes Risborough and a very infrequent service on this section to Banbury, the Chiltern Line has subsequently been completely transformed. This section is now double track again, and a frequent fast service extends to Birmingham and Stratford-upon-Avon. 51875 was not so lucky, being withdrawn in 1992 and cut up at Gwent Demolition, Margam.