DMBS: BR 588, in two versions, without and with through access, TSL: BR 589 and TS: BR 590. The latter also covered the Class 115 TS.
DMBS: DQ227
TSL: without gangway DT214, with gangway DT226
TS: without gangway DT208, with gangway DT229. These also included Class 115 vehicles.
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.