| Present Location | Gwendraeth Valley Railway |
| County Location | Carmarthenshire |
| Designed For | BR |
| Built by | Pressed Steel |
| Diagram number | 811 / NI501 |
| Lot number | 30417 |
| Type | GUV |
| First Number | 86221 |
| Later Numbers | 85523, 94023, 80257 |
| Present Number | 80257 |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | Mk 1 GUV; converted to Newspaper Van ca. 1978 (Design Code NL501); then converted 1993 to NPX Royal Mail van (Design Code NP502). To Barrow Hill 12/99. Now used for storage. By 09/21: moved from Barrow Hill to Gwendraeth Valley Railway. |
| Owner | Pioneer Diesel Group |
| External Structural Condition | Satisfactory |
| Internal Structural Condition | Satisfactory |
| Underframe Condition | Satisfactory |
| External Finish | Satisfactory |
| Internal Finish | Satisfactory |
| Degree of External Originality | As built/last Passenger rebuild (BR or before) |
| Degree of Internal Originality | As built/last Passenger rebuild (BR or before) |
| Degree of Underframe/Running Gear Originality | As built/last Passenger rebuild (BR or before) |
| Degree of External Authenticity | Good |
| Degree of Internal Authenticity | Good |
| Degree of Underframe Authenticity | Good |
| Rarity | Many |
| Historical Importance | no Immediate Importance/Not Applicable |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 28/04/2001 |
| Surveyor | Trevor England |
| Photo Date | 21/03/2002 |
| Photo by | Byron Chamberlain |
| At Risk | No |
| Date Record Last Updated | 30/11/2021 |
