- GWR
- Great Western Railway
- LMS
- London Midland & Scottish Railway
- LNER
- London & North Eastern Railway
- SR
- Southern Railway
- NER
- North Eastern Railway
- GNR
- Great Northern Railway
- LNWR
- London & North Western Railway
- LB&SCR
- London Brighton & South Coast Railway
- SE&CR
- South Eastern & Chatham Railway
- B&MR
- Brecon & Merthyr Tydfil Junction Railway
- BR
- British Rail or British Railways
- BRC&W
- BRCW
- Birmingham Railway Carriage & Wagon Company
- SVR
- Severn Valley Railway
- PW
- Permanent Way
- S&T
- Signals & Telegraph
- MPD
- Motive Power Depot
- C&W
- Carriage & Wagon
- DMU
- Diesel Multiple Unit
- ETT
- Electric Train Token
- Bulleid
- Oliver Vaughan Snell Bulleid, Chief Mechanical Engineer (CME) of the Southern Railway between 1937 and 1948
- Hawksworth
- Frederick Hawksworth, Chief Mechanical Engineer (CME) of the Great Western Railway between 1941 and 1948
- Collett
- Charles Benjamin Collett, Chief Mechanical Engineer (CME) of the Great Western Railway between 1922 and 1941
- Churchward
- George Jackson Churchward, Chief Mechanical Engineer (CME) of the Great Western Railway between 1902 and 1922
- Stanier
- William Stanier, Chief Mechanical Engineer of the London, Midland and Scottish Railway berween 1932 and 1944