All formations below have been noted from the Quainton end working to the Aylesbury end. All images are at Quainton Road unless noted otherwise.
Formation: unknown
For an image see the Transport Treasury website
Formation: unknown
Formation: unknown
Formation: unknown
Formation: unknown
For an image see the Transport Treasury website
Formation: unknown
Formation: unknown
Formation: 51873 - 59664 - 59733 - 51659
Formation: unknown
Formation: 51874 + ?
Formation: 51661 - 59748 - 59725 - 51668
Formation: unknown
Formation: 51658 - 59652 - 59749 - 51896
Formation: 51900 - 59666 - 59744 - 51870
Formation: 51879 - 59735 - 59750 - 51881
Formation: 51879 - 59676 - 59659 - 51673
Formation:
Formation: ? + 51884
Formation: 51653 - 59755 - 59652 - 51857
Formation: 51870 - 59761 - 59652 - 51893
Formation: 51668 - 59768 - 59666 - 51878

The image is undated but with M51878 closest it is believed to be taken on this date. Stuart Mackay Collection
Formation: 51874 - 59658 - 59664 - 51887
Formation: 51656 - 59752 - 59734 - 51883
Formation: 51676 - 59758 - 59662 - 51668
Formation: 51664 - 59649 - 59670 - 51675
Formation: 51666 - 59746 - 59727 - 51670
Formation: 51864 - 59652 - 59669 - 51653
Formation: 51879 - 59673 - 59735 - 51658
Formation: 51866 - 59734 - 59763 - 51857
Formation: 51666 - 59674 - 59737 - 51664
Formation: 51678 - 59753 - 59649 - 51886
Introduction
1971 - 1979
1980 - 1983
1984 - Date
Many thanks are due to Robert Frise for supplying the formations and most of the images in this section.