With the temperature well below freezing, 51668 leads the 07:27 Marylebone to Banbury service past Ardley on 29 December 1984. 51668 was withdrawn in December 1991, having spent all its working life rattling up and down the Chiltern Line on trains such as this. It was replaced, along with all its classmates by Class 165/0 Turbo units. Only a few months after being removed from service it was sent to oblivion at MC Metals, Glasgow.