LSWR A12 class

The A12 locomotives of the London and South Western Railway were built between the years 1887 and 1895 to the design of William Adams. Ninety of the locomotives were built, fifty at Nine Elms Works and forty by Neilson and Company, although the latter together with the final twenty from Nine Elms were officially known as the O4 class. They were unusual for their time, with a wheel arrangement of 0-4-2. This arrangement was used by few of the other railway companies and never proved popular (although the Great Northern Railway had 150 such locomotives). They bore the nickname "Jubilees", because the first batch appeared in the Golden Jubilee of Queen Victoria's reign.

History

The 90 members of the class were built in batches, as shown in the following table.

Year	Order	Builder	Quantity	LSWR numbers	Notes
1887	A12	LSWR Nine Elms	10	527–536	Template:Sfn
1888	E1	LSWR Nine Elms	10	537–546	Template:Sfn
1889	M2	LSWR Nine Elms	10	547–556	Template:Sfn
1893–94	O4	LSWR Nine Elms	10	597–606	Template:Sfn
1892–93	—	Neilson & Co. 4506–4545	40	607–646	Template:Sfn
1894–95	K6	LSWR Nine Elms	10	647–656	Template:Sfn

All 90 passed to the Southern Railway in 1923, following the introduction of the Grouping Act.

Withdrawal

Withdrawals started in 1928, with four of the class surviving to Nationalisation. The four operated by British Railways were all withdrawn in its first year (1948), excluding DS3191 which was used for steam supply at Eastleigh Works and lasted until 1951. No members of the class have been preserved.

Table of withdrawals

Year	Quantity in service at start of year	Quantity withdrawn	Locomotive numbers	Notes
1928	90	6	E529, E535, E542, E548, E552, E553
1929	84	13	E528, E531–E533, E536, E537, E540, E543, E544, E547, E549, E550, E556
1930	71	3	E527, E539, E546
1931	68	6	E530, E534, E538, E541, E545, E554
1932	62	6	551, 607, 608, 610, 653, 656
1933	56	9	602, 604, 626, 631, 633, 639, 645, 647, 651
1934	47	1	601
1935	46	3	603, 621, 635
1936	43	4	605, 616, 622, 655
1937	39	4	611, 619, 632, 640
1938	35	3	617, 628, 650
1939	32	1	646	613, 620, 624, 625, 629, 642, 644 withdrawn and then reinstated
1944	31	1	555
1946	30	12	599, 600, 606, 612, 613, 615, 620, 623, 637, 641, 644, 649	612 transferred to Departmental stock as 3191S, later BR DS3191; scrapped 1951
1947	18	14	597, 598, 609, 614, 624, 625, 630, 634, 638, 642, 643, 648, 652, 654
1948	4	4	618, 627, 629, 636

External links

• SREmG details