List of British railway-owned locomotive builders
Many early locomotive works disappeared as railways merged or they became simply motive power depots. Some, like Bromsgrove, made only one or two new locomotives but, for even the largest, overhaul and repair of the existing fleet was the main activity.
See also List of locomotive builders and List of early British private locomotive manufacturers
| Year | Works location | Railway company |
| 1826 | Shildon | Stockton and Darlington Railway |
| 1830 | Edge Hill | Liverpool and Manchester Railway |
| 1831 | Gateshead railway works | Newcastle and Darlington Railway |
| 1838 | Wolverton | London and Birmingham Railway |
| 1839 | Edge Hill | Grand Junction Railway |
| 1840 | Bromsgrove | Birmingham and Gloucester Railway |
| 1840 | Brighton | London and Brighton Railway |
| 1840 | Derby | North Midland Railway |
| 1841 | Crewe | Grand Junction Railway |
| 1842 | Cowlairs | Edinburgh and Glasgow Railway |
| 1842 | Longsight railway works | Manchester and Birmingham Railway |
| 1843 | Nine Elms | London and South Western Railway |
| 1844 | Darlington | North Eastern Railway |
| 1845 | Wolverton | London and North Western Railway |
| 1845 | Ashford | South Eastern and Chatham Railway |
| 1846 | Swindon | Great Western Railway |
| 1846 | Greenock | Caledonian Railway |
| 1846 | Barrow-in-Furness | Furness Railway |
| 1847 | Miles Platting | Lancashire and Yorkshire Railway |
| 1848 | Gorton | Manchester, Sheffield and Lincolnshire Railway |
| 1849 | Wolverhampton | Shrewsbury and Birmingham Railway |
| 1850 | Bow | North London Railway |
| 1851 | Stratford | Great Eastern Railway |
| 1853 | Earlestown railway works | LNWR Formerly Jones and Potts |
| 1853 | Doncaster | Great Northern Railway |
| 1854 | St Rollox | Caledonian Railway |
| 1854 | York | North Eastern Railway |
| 1856 | St. Margarets | North British Railway |
| 1856 | Cardiff | Taff Vale Railway |
| 1857 | Kilmarnock | Glasgow and South Western Railway |
| 1857 | Maryport | Maryport and Carlisle Railway |
| 1859 | Bristol | Great Western Railway |
| 1862 | Bury | Lancashire and Yorkshire Railway |
| 1862 | Highbridge | Somerset and Dorset Joint Railway |
| 1868 | Stoke | North Staffordshire Railway |
| 1869 | Longhedge | London Chatham and Dover Railway |
| 1869 | Lochgorm | Highland Railway |
| 1874 | Sheffield | Great Central Railway |
| 1876 | Newton Heath | Lancashire and Yorkshire Railway |
| 1889 | Horwich | Lancashire and Yorkshire Railway |
| 1891 | Eastleigh | London and South Western Railway |
| 1897 | Melton Constable | Midland and Great Northern Joint Railway |
| 1899 | Caerphilly | Rhymney Railway |
| 1909 | Inverurie | Great North of Scotland Railway |