British Rail Class 11
The British Rail Class 11 was applied to a batch of diesel shunting locomotives built from April 1945 to December 1952, based on a similar earlier batch built by the London, Midland and Scottish Railway between 1934 and 1936.
Overview
Numbering
An initial batch of twenty locomotives was built during World War II, fourteen of which were built for the War Department, with the first ten of these subsequently going to the Nederlandse Spoorwegen post-war as NS 501–510. LMS numbers 7120–7126 went straight into LMS stock, and a follow-up batch was built, 7129 being the last diesel shunter to be built for the LMS. British Railways continued to build the class from 1948 to 1952, using numbers M7130–M7131 and 12045–12138. 7120–7129 and M7130–M7131 became BR numbers 12033–12044. The whole class of 12033–12138 became Class 11. Locomotives up to 12102 were built at LMS/BR Derby and 12103–12138 at BR Darlington.Export locomotives
Close to 100 almost identical machines were built by English Electric and supplied to Nederlandse Spoorwegen as its 500 Class & 600 Class diesel locomotives. In addition to the exported 501–510 mentioned above, 500 Class also included 511–545. Sixty-five of the 600 Class locomotives were built by English Electric between 1950 and 1957, numbered 601–665, at either Dick, Kerr & Co. Works in Preston or Vulcan Foundry Works in Newton-le-Willows. A further batch of 15 locomotives were exported without engines so that they could be fitted as such in the Netherlands. They were numbered 701–715.Another export order was to Australia, with 16 locomotives built in 1951 but with the design modified for use on 5 ft 3 in gauge railways. The Victorian Railways bought ten, which were designated as F class, and six were bought by the State Electricity Commission of Victoria for shunting on sidings connected to Victorian Railways tracks.
One member of Class 11 was built for transporting British soldiers in the former Nazi-occupied countries. Throughout the liberation period it travelled through France, Belgium and the Netherlands before finally reaching Germany. It was then used for transporting British troops and for shunting, and was occasionally used on a few branch lines until 1957. The reason was that after the war the newly founded Deutsche Bundesbahn had to build up its locomotive fleet. As the more powerful German engines began to roll out, the Class 11 diesel was used less and, in 1953, it was withdrawn. It stood in Hamm Engine shed, in West Germany, until it was bought by Danish State Railways in 1957. It was then renumbered to DSB ML 6 and liveried in the dark green of Danish diesel shunters. It served on shunting duties in Copenhagen yards until 1973, when it was finally withdrawn for good and scrapped in 1974, in Hedehusene, Denmark.
English Electric works numbers 1550 & 1551 were built in 1949 for Swedish State Railways, numbered 3 and 4 respectively. They were tested in harbour shunting in Gothenburg. They were later sent to northern Sweden and the ore loading harbour of Luleå. From there to a mine outside of Stockholm where they did service into 1992. Both are preserved at Bothnia Railway Museum in Luleå.
Technical details
The diesel engine is an English Electric 6-cylinder, 10-inch bore by 12-inch stroke ; 4-stroke, 6KT and the traction motors are two: EE506 axle-hung, nose-suspended, force-ventilated traction motors with 21.7:1 double reduction gear drive. The main generator is an English Electric EE801, 441 A at 430 V.Withdrawal
The 106 locomotives of British Railways were withdrawn between May 1967 and November 1972.| Year | Quantity in service at start of year | Quantity withdrawn | Locomotive numbers |
| 1967 | 106 | 5 | 12068, 12104/07/23/29. |
| 1968 | 101 | 17 | 12034–37/39–44/72, 12119–20/24/26/37–38. |
| 1969 | 84 | 24 | 12033/38/45–48/57/59/64/66–67/70/86/92/95, 12100/12/16–17/25/31/33/35. |
| 1970 | 60 | 11 | 12050/54/62/81/89/91, 12101/06/14–15/28. |
| 1971 | 49 | 40 | 12049/51–53/55–56/58/60–61/65/69/71/73 12075–78/80/82–85/87–88/90/93–94/97–99, 12102–03/05/08/11/18/21–22/36. |
| 1972 | 9 | 10 | 12063/74/79, 12103/09–10/27/30/32/34. |
Post-BR use
Sixteen locomotives were sold to the National Coal Board, and were used in the North East England, South Wales and the Kent Coalfield.| Locomotive Number | Company | Disposition |
| 12049 | Day & Son, Brentford Town Goods Depot | Scrapped |
| 12052 | National Coal Board, Widdrington Disposal Plant | Scrapped |
| 12054 | A.R. Adams Ltd., Newport Docks | Scrapped |
| 12060 | NCB, Philadelphia Loco Shed | Scrapped |
| 12061 | NCB, Natgarw Coking Plant | Scrapped |
| 12063 | NCB, Natgarw Coking Plant | Scrapped |
| 12071 | NCB, Natgarw Coking Plant | Scrapped |
| 12074 | NCB, Swalwell Disposal Point | Scrapped |
| 12074 | Harry Needle Railroad Company | Scrapped |
| 12082 | U.K.F. Fertilisers Ltd., Ince Marshes | Scrapped |
| 12083 | Tilcon Ltd., Swinden Limeworks, Skipton. | Preserved - Battlefield Line |
| 12084 | NCB, Bates Colliery | Scrapped |
| 12088 | NCB, Swalwell Disposal Point | Preserved - Aln Valley Railway |
| 12088 | HNRC | Preserved - Aln Valley Railway |
| 12093 | NCB, Widdrington Disposal Point | Scrapped |
| 12098 | NCB, Philadelphia Loco Shed | Scrapped |
| 12098 | HNRC | Scrapped |
| 12099 | NCB, British Oak Disposal Point | Preserved - Severn Valley Railway |
| 12119 | NCB, Philadelphia Loco Shed | Scrapped |
| 12122 | NCB, British Oak Disposal Point | Scrapped |
| 12131 | NCB, Snowdown Colliery | Preserved - North Norfolk Railway |
| 12133 | NCB, Philadelphia Loco Shed | Scrapped |
Preservation
Only one of the LMS examples is preserved being:- AD601 at Lakeside and Haverthwaite Railway
- 12052 at Caledonian Railway
- 12077 at Midland Railway – Butterley
- 12083 at Battlefield Line Railway
- 12088 at Aln Valley Railway
- 12093 at Caledonian Railway
- 12099 at Severn Valley Railway
- 12131 at North Norfolk Railway
- A ninth example 12049 is preserved at the Watercress Line in Hampshire. At one time it was re-registered as 01553, in TOPS Class 01/5, carried both numbers and was owned by the Harry Needle Railroad Company. 12082 was renumbered to 12049 in October 2010 and painted in BR green with a late crest but without the yellow/black ends. This was as a replacement for the original Mid-Hants locomotive 12049 that was scrapped after suffering catastrophic damage during an engine shed fire on 26 July 2010.