| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|---|---|---|---|---|---|---|---|
| 2 | 0-4-0ST+T | 23½" | Ffestiniog Railway | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | George England & Co., 1863 | Oldest operational narrow gauge steam locomotive in the UK. Named Prince. Operates on the Ffestiniog Railway. |