| Armstrong Whitworth |
| Aveling and Porter |
| Avonside Engine Company |
| Avonside Locomotive Works |
| W. G. Bagnall |
| Baguley Cars Ltd |
| Andrew Barclay Sons & Co. |
| Albert Barnes & Co |
| Bassett-Lowke |
| William Beardmore and Company |
| Beyer, Peacock and Company |
| Black, Hawthorn & Co |
| Francis Claude Blake |
| Edward Borrows and Sons |
| Boston Lodge |
| Bowesfield Works |
| British Rail Engineering Limited |
| British Electric Vehicles |
| British Thomson-Houston |
| Bromsgrove railway works |
| Brush Traction |
| Charles Burrell & Sons |
| Bury, Curtis and Kennedy |
| J and C Carmichael |
| Clayton Equipment Company |
| Clyde Locomotive Company |
| Cowlairs railway works |
| Crewe Works |
| Crook and Dean |
| James Cross and Company |
| Davies and Metcalfe |
| Day, Summers and Company |
| De Winton |
| Derby Works |
| Dick, Kerr & Co. |
| Isaac Dodds and Son |
| Doncaster Works |
| Drewry Car Co. |
| Dübs and Company |
| Duffield Bank Railway |
| George England and Co. |
| English Electric |
| Exmoor Steam Railway |
| William Fairbairn & Sons |
| Fenton, Murray and Jackson |
| Fletcher, Jennings & Co. |
| George Forrester and Company |
| Fossick & Hackworth |
| Foster, Rastrick and Company |
| John Fowler & Co. |
| Fox, Walker and Company |
| GEC Traction |
| Gilkes Wilson and Company |
| Glasgow Works |
| Gloucester Railway Carriage and Wagon Company |
| List of products of the Gloucester Railway Carriage and Wagon Company |
| Grant, Ritchie and Company |
| Thomas Green & Son |
| Greenwood & Batley |
| Haigh Foundry |
| R and W Hawthorn |
| R. & W. Hawthorn, Leslie and Company |
| Hawthorns and Company, Leith |
| Haydock Foundry |
| F. C. Hibberd & Co. |
| B. Hick and Sons |
| Thomas Hill (manufacturer) |
| A. Horlock and Co |
| Richard Hornsby & Sons |
| Robert Hudson (company) |
| Hudswell Clarke |
| Hunslet Engine Company |
| Jones, Turner and Evans |
| Alan Keef Ltd |
| Kent Construction and Engineering |
| Kerr, Stuart and Company |
| Thomas Kirtley and Co |
| William and Alfred Kitching |
| Kitson and Company |
| Leeds Forge Company |
| Stephen Lewin |
| Lilleshall Company |
| Lister Rail-Truck |
| R A Lister and Company |
| R. B. Longridge and Company |
| Manning Wardle |
| Mather, Dixon and Company |
| McEwan Pratt |
| Melton Constable Railway Works |
| Merryweather & Sons |
| Metro-Cammell |
| Metropolitan-Vickers |
| Midland Railway Locomotive Works |
| Motor Rail |
| Muir-Hill |
| Nasmyth, Gaskell and Company |
| Neilson and Company |
| North British Locomotive Company |
| Peckett and Sons |
| Hugh Phillips Engineering |
| Railway Foundry |
| Rothwell, Hick and Rothwell |
| Sentinel Waggon Works |
| Severn Lamb |
| Sharp, Stewart and Company |
| Slaughter, Grüning and Company |
| Stark and Fulton |
| Robert Stephenson and Company |
| Robert Stephenson and Hawthorns |
| Henry Stothert and Company |
| Stothert, Slaughter and Company |
| Swindon Works |
| Thompson & Cole |
| TMA Engineering |
| Tram Power |
| Tulk and Ley |
| Vivarail |
| Vulcan Foundry |
| E. B. Wilson and Company |
| Wingrove & Rogers |
| Winson Engineering |
| Wolverhampton railway works |
| Worcester Engine Works Company |
| Yorkshire Engine Company |