This is a departmental unit which never was.
Two Class 207 motor cars were earmarked to be used as tractor unit but the conversion was cancelled.
The vehicles involved were 60135 (97906) & 60138 (977907) and the idea was for the multiple control system to be modified so it could work in multiple with EMU's.
Both vehicles were purchased by Hastings Diesels Ltd for spares, 60135 was broken up at St Leonards and 60138 was later sold on and now resides at the Swindon & Cricklade Railway
Above is what remains of 60135 after it was broken for spares, this cab front has now gone to the Spa Valley railway where it is going to be an exhibit
Below is 60138 or Ajax as it was had named by depot staff
Both Images by Amy Adams