LMS 3-Cylindered Stanier 2-6-4T
Stanier’s 3-cylinder designer for the LT&SR
The LMS Stanier Class 4P 3-Cylinder 2-6-4T is a class of steam locomotives designed for work over the London, Tilbury and Southend Railway route. All 37 were built in 1934 at Derby Works and were numbered 2500–2536. The third cylinder was provided to allow increased acceleration between the many stops on the L.T.&S.R. line. From 1935 the LMS switched to constructing a very similar, albeit simpler, 2-cylinder design.
Production
The 37 three-cylinder express passenger tank locomotives were designed specifically for the London Tilbury and Southend line of the London Midland & Scottish railway (LMS) where extra power was needed to operate the heavy outer suburban trains to tight schedules. The inside cylinder and valve gear created additional maintenance and was deemed unnecessary for other duties. The locomotives were built in 1934 at LMS Derby Works.
Withdrawal
The class were withdrawn from 1960 to 1962.
Preservation
No. 2500, the first of the class to be built, has been preserved on static display at the National Railway Museum in York in LMS lined black livery.
This brief starts where responsible research should: with the source description of “LMS 3-Cylindered Stanier 2-6-4T” as stanier’s 3-cylinder designer for the LT&SR. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the people & ideas register because the source frames it as stanier’s 3-cylinder designer for the LT&SR. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Chronology provides the most reliable spine for this subject; interpretation should follow only after identities and dates are secure. The source revision retrieved here is dated Mar 6, 2026. The linked authority identifier is Q6459082. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1934, 1935, 1960 and 1962.
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This entry incorporates text from “LMS 3-Cylindered Stanier 2-6-4T” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.