2-8-0 Steam Locomotives in Great Britain

Class O1 (Locobase 3124)

Data from Bryan Attewell ([] Steam locomotive simulator (April 2000 edition). Additional information from Richard Marsden's LNER Encyclopedia -- [], visited 26Sept 2004.

Substantial rebuilds of the LNER O4s with a new boiler, new cylinders driven by Walschaerts gear, and a raised running board. These had first entered service as GCR or War Department Consolidations in World War I.

Marsden notes that the rebuilds were not entirely satisfactory. When the British Railways Interchange Trials showed the O1s to be a good design, but poorly maintained. In addition, "The original GC (Great Central) side rods also tended not to work well with the Walschaerts valve gear, and their boilers suffered the same firebox problems as the B1s. [which included clogging and generally poor hot-gas circulation]"

Class O2/4 (Locobase 11161)

Data from Richard Marsden's LNER Encyclopedia -- [], visited 2 February 2010.

The great majority of O2s were completed to a common design first produced in 1921 (see Locobase 3125). Four additional engines were produced using the same boiler design as that found in Thompson's B1 4-6-0 of 1944. As older O2 boilers needed replacement under British Railways management, BR built additional Diagram 100A boilers beginning in February 1949.

BR withdrew four O2s in 1960 and the last 40 in the roster as a batch in 1963.

Class O6 (Locobase 21097)

Data from The Stanier 8F Locomotive Society Limited website at [], last accessed 16 October 2022; "LMS Stanier Class 8F" in Wikipedia at [], last accessed 16 October 2022;

"LMS Stanier 8F steam locomotives - Class Information"

Updated Monday, 13 January, 2020 by [] on []. See also "LMS Stanier "8F" Class 2-8-0" on the BRDatabase at [], last accessed 16 October 2022; and Richard Marsden, "Locomotives-The Stanier O6 (8F) 2-8-0s" in his LNER Encyclopedia at [], last accessed 17 October 2022; and "LMS Stanier "8F" Class 2-8-0" on the BRDatabase at [], last accessed 16 October 2022.

Built at Southern Railway's Brighton Works--30 in 1944, 23 from LNER Darlington and 25 from LNER Doncaster in two batches over 1945-1946.

Locobase 3115 holds the main entry for Stanier's LMS 8F 2-8-0. This entry summarizes the LNER's contribution to the building of this very large class. Their construction responded to an LNER offer to the Executive Railway Board (ECB) build and operate up to 100 8Fs. The ECB ordered 68 and these arrived on the railway in 1944-1946.