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1987
The retro-green Class 127 parcel DMU (55967 + 55966) at Bletchley sometime in 1987. Stuart Mackay Collection.

circa early 1960s
Two Rolls-Royce powered Derby suburban quad sets head to Luton, seen just north of Hendon station, circa early 1960s. The Down & Up Hendon lines rise on the right of picture, and will cross the Down & Up Fast and Down slow behind the camera at Silkstream Junction Stuart Mackay Collection.

20th April 1988
Class 127 parcel set 912, 55982 and presumably 55972, in Crewe station on 20 April 1988. On the right is Class 114 set T233, presumably 53039 + 54024. Stuart Mackay Collection.

7th April 1988
Stockport on the 7th of April 1988 and we have two car Parcels DMU set 912 comprising M55972 and M55982. The KDH Archive.

10th June 1987
The 10th of June 1987 and 'Newspaper' 2 car Class 127 dmu 55975 and 55976 is departing. These were the power cars from sets 916 and 915. The KDH Archive.
Summary
Background
Description
Power Train
Interiors
Works Photos
Diagrams & Design Codes
Driving Instructions
Numbering
Liveries
Operations
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Parcel Use
Images
Details about preserved Class 127s can be found here.
Also relavant is the article "Working the DMUs" by Cricklewood Driver Arno Brooks.