 Image by Dave Sellery |  Image by Alan Hayward, Class 47284 at Maentwrog Road on a Gunpowder Train. |  47323 gunpowder Train, image by Minfford Ken. |
 47342 at Trawsfynydd Nuclear Siding, 17 April 1987, Image by Paul Japeth. |  47342 at Trawsfynydd Nuclear Sidings, Image by Minfford Ken |  47357 at Manod on Ballast Duties, Image by Alan Hayward. |
 47531 at Maentwrog Road, Image by Alan Hayward. |  Unidentified Class 47 on gunpowder train, Image by Minfford Ken. |
| Locomotive Number | Build Date (Batch) | Location Built | Notes |
| 47205 | Operated Test train consisting of Lab Vehicle on the 22/06/1977 | ||
| 47234 | |||
| 47284 | |||
| 47323 | |||
| 47342 | |||
| 47357 | |||
| 47447 | Operated test train with DM45029 on 25/03/1987 | ||
| 47531 | |||
| 47590 | Operated test train wtih DM45029 on 04/03/1986 | ||
| 47785 | Trawsfynydd Lament 17/10/1998 |