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circa April 1986
The retro-green Class 127 parcel DMU (55967 + 55966) seen on Chester depot, thought to be sometime in April 1986. Stuart Mackay Collection.

circa 1988
Class 127 parcels set 912 - 55972 + 55982 alongside a Class 120 parcel set in Northampton station, circa 1988. Stuart Mackay Collection.

circa 1983
A couple of Class 127s in Cricklewood running shed circa 1983. Stuart Mackay Collection.

22nd May 1965
The original Corby Station is alive and well in this picture taken 22/05/1965, that is certainly a very full trolley waiting to be loaded.
Image taken by Peter Shoesmith. Geoff Dowling and John Whitehouse Collection.

17th August 1985
55973+55983 at Manchester Victoria, Saturday 17th August 1985. Photo by the late Rob Simpson. Ian Hazlehurst.
Summary
Background
Description
Power Train
Interiors
Works Photos
Diagrams & Design Codes
Driving Instructions
Numbering
Liveries
Operations
Accidents
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.