| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 4wG | 52" | Swansea Industrial & Maritime Museum | National Waterfront Museum, Swansea, WAL | operational | Swansea Industrial & Maritime Museum, 1981 | "Replica of Richard Trevithick's Pen-y-Darren, the world's first steam locomotive confirmed to have successfully run on rails (1804). Named Penydarren. ". |