;Stanier:William Stanier, Chief Mechanical Engineer of the London, Midland and Scottish Railway 1932-1944
;Ivatt:Henry George Ivatt, Chief Mechanical Engineer of the London, Midland and Scottish Railway 1944-1948. CME of BR (London Midland Region) 1948-1951
;GreslyGresley:Sir Nigel Gresley, Chief Mechanical Engineer of the London & North Eastern Railway 1923-1941
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