Locomotives of the Great Western Railway Locomotives of amalgamated companies (1920 - 1924) Llanelly and Mynydd Mawr Railway

| Manufacturer | Type_ | Quantity | LMMR_Name | GWR_No_ |
|---|---|---|---|---|
| Andrew Barclay Sons & Co. | 0-6-0T | 1 | George Waddell | 312 |
| Hudswell Clarke | 0-6-0T | 2 | Tarndune | 339 |
| Hudswell Clarke | 0-6-0ST | 1 | Hilda | 359 |
| Manning Wardle | 0-6-0T | 1 | Victory | 704 |
| Hudswell Clarke | 0-6-0T | 1 | Ravelston | 803 |
| Hudswell Clarke | 0-6-0T | 1 | Merkland | 937 |
| Avonside Engine Company | 0-6-0T | 1 | Great Mountain | 944 |
| Fox, Walker & Co. | 0-6-0ST | 1 | Seymour Clarke | 969 |