BRITISH RAIL CLASS 931

The British Rail 'Class 931' was reserved for former Southern Region electrical multiple units converted for departmental use. Originally the series was reserved for Route Learning and Stores units. In recent years, however, other types have also been given numbers in this series.
The Southern Region initially numbered its departmental EMUs in a series between S1 and S101. In 1968, a new series was adopted; 001-099. Existing units were renumbered to fit in that series, which also included other non-passenger stock, i.e. those EMUs converted for parcels traffic. It should be noted that several of the numbers 001-099 have been reused for different units.
When TOPS class numbers were applied, these units mostly retained their existing numbers as the last three digits of their new TOPS class number. The table below lists all the units numbered in the Class 931 series, together with the route learning and stores units used by the SR prior to the application of TOPS numbers.

Key:	In service	Withdrawn	Preserved	Reclassified	Scrapped

Unit No.			Converted	Use	FormerClass	Final livery	Original Formation		Wdn.	Status
TOPS	SR Series	Original					DM	DM ( ★ DT)
931001	-	?	?	Route learner unit	416	NSE	977857 ex.65346	977856 ★ ex.77531	2002	Scrapped (2004)
931002	-	?	?	Route learner unit	416	NSE	977917 ex.65331	977918 ★ ex.77516	2002	Scrapped (2004)
-	018 (2nd)	?	?	Stores unit	416	Blue	977290 ex.65318	977291 ex.65324	1993	Scrapped (1993)
-	019 (2nd)	?	?	Stores unit	418	Blue	977068 ex.14549	977069 ★ ex.16029	1993	Scrapped (1993)
-	020 (2nd)	?	?	Stores unit	414	Blue	977213 ex.61627	977214 ex.75362	1988	Scrapped (1988)
-	022	2613/2669	?	Stores unit	402	Blue	DS70315 ex.10731	DS70318 ex.10787	?	Scrapped (1985)
-	023	2624/2642	?	Stores unit	402	Blue	DS70316 ex.10742	DS70317 ex.10760	?	Scrapped (1987)
-	024	4378	1973	Stores unit	405	Blue	975250 ex.10829	975251 ex.10830	1989	Scrapped (1990)
931062	ex.930026	?	?	Carriage cleaning fluid unit	416	NSE	977559 ex.65313	977560 ex.65320	2002	Scrapped (2004)
931090	-	9010	?	Tractor unit	419	NSE	68010	-	1997	Preserved
931091	-	9001	?	Tractor unit	419	NSE	68001	-	1998	Preserved
931092	-	9002	?	Tractor unit	419	NSE	68002	-	2004	Preserved
931093	-	9003	?	Tractor unit	419	Blue	68003	-	1997	Preserved
931094	-	9004	?	Tractor unit	419	NSE	68004	-	1997	Preserved
931095	-	9005	?	Tractor unit	419	LSE "Jaffa Cake"	68005	-	1997	Preserved
931096	-	9006	?	Tractor unit	419	LSE "Jaffa Cake"	68006	-	1994	Scrapped (1994)
931097	-	9007	?	Tractor unit	419	LSE "Jaffa Cake"	68007	-	1997	Preserved
931098	-	9008	?	Tractor unit	419	NSE	68008	-	1997	Preserved
931099	-	9009	?	Tractor unit	419	LSE "Jaffa Cake"	68009	-	1997	Preserved