Edward Thompson

Born	25 June 1881
Died	15 July 1954
Nationality	English
Employer	North Eastern Railway (apprentice); Stratford Works, GER (Carriage & Wagon Department); Royal Engineers (WWI); Great Eastern Railway / LNER (Carriage & Wagon Engineer); LNER (Mechanical Engineer, Stratford 1927; Locomotive Running Superintendent, Darlington 1930; Mechanical Engineer, Darlington 1933; Chief Mechanical Engineer 1941–1946)

Edward Thompson (1881–1954) was a British locomotive engineer who served as Chief Mechanical Engineer of the London and North Eastern Railway from April 1941, following the sudden death of Sir Nigel Gresley, until his retirement in June 1946. His tenure was both productive and contentious: the wartime B1 mixed-traffic 4-6-0 was one of the most practical and successful locomotive designs of the era, while his controversial policy of rebuilding Gresley's conjugated three-cylinder classes to two-cylinder form remains one of the most debated decisions in British railway engineering history.

Born at Marlborough on 25 June 1881, the son of a senior Marlborough College master, Thompson was educated at Marlborough and Pembroke College, Cambridge, before serving an NER apprenticeship under Vincent Raven. He worked under James Holden at Stratford and served as a Major in the Royal Engineers during the First World War, returning to a sequence of LNER carriage, wagon, and running posts that took him to Mechanical Engineer at Darlington by 1933. He was not Gresley's first choice for the CME post — relations between the two men were reportedly strained — but became the default appointment when Gresley died suddenly in April 1941.

Thompson's B1 Class 4-6-0 of 1942, designed to be built quickly with standard components under wartime conditions, was a genuine achievement: 410 were eventually built, and the class gave BR reliable mixed-traffic service across the former LNER system for two decades. His L1 2-6-4T suburban tank and K1 2-6-0 were also competent, practical designs. The rebuilding of Gresley's magnificent P2 2-8-2 Mikados — the most powerful British passenger locomotives of their day — to A2/2 4-6-2 form was the most condemned of his decisions, destroying what many considered irreplaceable express engines. His rebuilding of Gresley's own No. 4470 Great Northern to A1/1 configuration set the template that Peppercorn developed into the production A1 class.

Thompson retired in June 1946 and was succeeded by A.H. Peppercorn. He died at Brigg, Lincolnshire on 15 July 1954. His reputation, long unfairly diminished by comparison with Gresley, has been partially rehabilitated by historians who note the practical constraints of wartime design and the genuine merit of the B1 class.

Biography

Edward Thompson (1881–1954) was a British locomotive engineer who succeeded Sir Nigel Gresley as Chief Mechanical Engineer of the London and North Eastern Railway on Gresley's death in April 1941, holding the post until his retirement in June 1946. His tenure was difficult, wartime austerity, an ageing fleet and an awkward inheritance combined, and his policy of rebuilding Gresley's three-cylinder Pacifics and Mikados to two-cylinder form was controversial both at the time and since.

Thompson was born at Marlborough on 25 June 1881, the son of a senior master at Marlborough College. He was educated at Marlborough and Pembroke College, Cambridge, and apprenticed on the NER under Vincent Raven. He served on the staff of James Holden at Stratford and as a Major in the Royal Engineers in the First World War. Through the early LNER he held a sequence of works and running posts, becoming Mechanical Engineer at Darlington in 1933.

His own designs included the well-regarded B1 Class mixed-traffic 4-6-0 of 1942, a deliberately simple two-cylinder engine that drew on the reliable parallel-boiler tradition of the Big Four, the L1 2-6-4T suburban tank, and the K1 2-6-0 (a Thompson rebuild of Gresley's K4 that was later taken up by Peppercorn for new construction).

His rebuilding of the Gresley P2 2-8-2 'Mikados' to A2/2 4-6-2 form, of the unique W1 'Hush-Hush' to A2/3, and of his own Great Northern A1 to A1/1 (the prototype for what would become the Peppercorn A1) divided opinion sharply. He retired in June 1946 in preference to extending his service to the planned 1948 nationalisation. He died at Brigg, Lincolnshire on 15 July 1954.

Locomotives designed

LNER B1 Class — Edward Thompson's two-cylinder mixed-traffic 4-6-0 designed in 1942 as a wartime austerity replacement for the Gresley three-cylinder K3 and B17. 410 were built between 1942 and 1952 at Darlington, Vulcan Foundry and the North British Locomotive Company. The B1 became the LNER's standard general-purpose engine and continued in BR Eastern Region service to 1967. Two are preserved.
LNER O1 Class — Thompson's 1944 LNER O1 class 2-8-0 — rebuilds of Robinson ROD / O4 class with B1 boilers. 58 rebuilt. None preserved.
LNER Thompson A1/1 — Thompson's 1945 rebuild of Gresley A1 prototype 4470 "Great Northern" into Thompson A1/1 class — an unsuccessful and controversial rebuild that lost much of Gresley's elegance. 4470 rebuilt 1945, scrapped 1962. Not preserved.
LNER Thompson A2/1 Class — Thompson's 1944 LNER A2/1 class 4-6-2 — Thompson rebuilds of Gresley P2 "Mikado" class 2-8-2s (originally six built for Edinburgh–Aberdeen) into Pacific Pacifics. 4 built (P2/2 boiler retained). Lost the unique character of Gresley's P2s. None preserved (the new-build P2 "Prince of Wales" project at Darlington restores the original 2-8-2 layout).
LNER Thompson A2/2 Class — Thompson's 1944 LNER A2/2 class — additional Thompson Pacifics. Thompson rebuilt the remaining P2s and built new A2/3s of similar pattern. None preserved in original P2 form.
LNER Thompson B1 Class — Edward Thompson's standardised mixed-traffic 4-6-0 for the LNER, designed in 1942 to a single-class brief that would replace the company's many ageing pre-Grouping 4-6-0s. 410 were built between 1942 and 1952 and they became the LNER's and Eastern Region's general-purpose engine, the LNER equivalent of the LMS Black Five.
LNER Thompson B2 Class — Reference to LNER B2 class — see that entry.
LNER Thompson L1 Class — Thompson's 1945 LNER L1 class 2-6-4T — Thompson's standard suburban tank for Eastern Region services. 100 built between 1945 and 1950. None preserved.
LNER Thompson O1 — Reference to LNER O1 class — see that entry.