Great Western Railway Engineer to the Great Western Railway Isambard Kingdom Brunel (1833-1837)
Locomotive Superintendent Daniel Gooch (1837–1864) Joseph Armstrong (1864–1877) William Dean (1877–1902) George Jackson Churchward (1902–1915)
Chief Mechanical Engineer George Jackson Churchward (1915–1921) Charles Collett (1922–1941) Frederick Hawksworth (1941–1947)
Northern Division Locomotive Superintendent Joseph Armstrong (1854–1864) George Armstrong (1864–1892)
British Railways (Western Region) Mechanical and Electrical Engineer Kenneth J Cook (1950–1951) Robert A Smeddle (1951–?)
Constituent companies Birkenhead Railway John Dixon T A Yarrow Rendell William Bragge George Douglas (1851–1860)
Bristol and Exeter Railway Charles Gregory (1849–1850) (Chief Engineer) James Pearson (1850–1875)
Cornwall Minerals Railway Miles Constatine
Llanelly Railway Joseph Hepburn Robert Hepburn
Llynvi and Ogmore Railway J Routledge
Monmouthshire Railway W Craig (1849–1854) R Laybourne (1854–1868) H Appleby (1868–1875)
Rhymney Railway Thomas Clements (1858–1862) Matthew Mordue (1862–1863) John Kendall (1863–1869) John Canty (1869–1884) Richard Jenkins (1884–1906) Charles T. Hurry Riches (1906-1922)
Shrewsbury and Birmingham Railway William Marlow (1849–1853) Edmund Petre Joseph Armstrong
Shrewsbury and Chester Railway A M Ross (Engineer) Thomas Truss (Carriage Superintendent) Edward Jeffreys Joseph Armstrong (1853–1854)
South Devon Railway; Frederick Gooch (1850–1864) Joseph Wright (1864–1876)
Taff Vale Railway B. S. Fisher (1869–1873) Tom Hurry Riches (1873-1911) John Cameron (1911–1922)
Vale of Neath Railway Joshua Williams (1851–1865) (General Manager)
West Cornwall Railway Skater H Appleby Joseph Wright (South Devon Railway Locomotive Superintendent)
West Midland Railway Edward Wilson (1860–1863)
Newport, Abergavenny and Hereford Railway Mark Carr (1854–1858) Alexander McDonnell (1858–1860)
Oxford, Worcester and Wolverhampton Railway David Joy (1852–1856) Frederic Haward (1856–1857) Edward Wilson (1857–1860)
References