GWR 0-4-0ST
The GWR 0-4-0ST steam locomotives were acquired by the Great Western Railway at the 1923 grouping. They came from small railways and from contractors. Some of them survived into British Railways ownership in 1948 and a few are preserved.
Details
| Railway | Name/Number | Builder | Works no. | Build date | GWR no. | BR no. | Withdrawal date | Notes |
| Ystalyfera Tin Works | Hercules | Peckett | 810 | 1900 | — | 1 | Taken into stock in 1948 | |
| Swansea Harbour Trust | 3 | Hudswell Clarke | 725 | 1905 | 150 | — | 1929 | - |
| Swansea Harbour Trust | 5 | Andrew Barclay | 1045 | 1905 | 701 | 1140 | 1958 | |
| Swansea Harbour Trust | 7 | Peckett | 739 | 1899 | 886 | — | 1928 | - |
| Swansea Harbour Trust | 8 | Peckett | 761 | 1899 | 926 | — | 1929 | - |
| Swansea Harbour Trust | 9 | Peckett | 908 | 1902 | 930 | — | 1927 | - |
| Swansea Harbour Trust | 10 | Peckett | 974 | 1904 | 933 | — | Sold to National Coal Board in 1928 | |
| Swansea Harbour Trust | 11 | Peckett | 1053 | 1906 | 929 | 1141 | 1952 | - |
| Swansea Harbour Trust | 12 | Peckett | 1105 | 1908 | 968 | 1143 | 1960 | |
| Swansea Harbour Trust | 13 | Hawthorn Leslie | 2781 | 1909 | 974 | 1144 | 1960 | |
| Swansea Harbour Trust | 14 | Hudswell Clarke | 939 | 1911 | 943 | 1142 | 1959 | |
| Swansea Harbour Trust | 15 | Peckett | 1282 | 1912 | 1085 | 1146 | 1951 | |
| Swansea Harbour Trust | 16 | Peckett | 1302 | 1913 | 1086 | 1147 | 1951 | |
| Swansea Harbour Trust | 18 | Peckett | 1522 | 1918 | 1098 | 1145 | 1959 | |
| Powlesland and Mason | 3 | Peckett | 1328 | 1913 | 696 | 1150 | 1952 | |
| Powlesland and Mason | 4 | Peckett | 1449 | 1916 | 779 | 1151 | Sold 1964 | |
| Powlesland and Mason | 5 | Brush Electrical | 301 | 1903 | 795 | — | Rebuilt with pannier tanks in 1926 | |
| Powlesland and Mason | 6 | Brush Electrical | 314 | 1906 | 921 | — | Sold to Berry Wiggins & Co. Ltd. in 1928. On display at the Snibston Discovery Museum until March 2016. | |
| Powlesland and Mason | 7 | Avonside | 1053 | 1874 | 925 | — | Ex GWR 1330; formerly South Devon Railway Rook. Purchased in 1906 | |
| Powlesland and Mason | 11 | Peckett | 1054 | 1907 | 927 | — | 1928 | - |
| Powlesland and Mason | 12 | Peckett | 1179 | 1912 | 935 | 1152 | 1961 | |
| Powlesland and Mason | 14 | Andrew Barclay | 1273 | 1912 | 928 | 1927 | - | |
| Powlesland and Mason | Dorothy | Hawthorn Leslie | 2558 | 1903 | 942 | 1153 | 1955 | |
| Cardiff Railway | 5 | Kitson & Co. | 3799 | 1898 | 1338 | 1338 | Preserved at Didcot | |
| Alexandra Docks | Trojan | Avonside | 1386 | 1897 | 1340 | — | Preserved at Didcot | |
| Alexandra Docks | Alexandra | Avonside | 1387 | 1898 | 1341 | — | 1946 | - |
| Taff Vale Railway | 267 | Hudswell Clarke | 166 | 1876 | 1342 | — | 1926 | - |
| Taff Vale Railway | 266 | Hudswell Clarke | 159 | 1876 | 1343 | — | 1925 | - |
| West Cornwall Railway | Fox | Avonside | 913 | 1872 | 1385 | — | Sold 1912 |