| Present Location | Aln Valley Railway |
| County Location | Northumberland |
| Designed For | BR |
| Build Location | Wolverton |
| Built by | BR |
| Diagram number | 146 |
| Lot number | 30426 |
| Type | SK |
| First Number | 25631 |
| Later Numbers | W18631 |
| Present Number | 25631 |
| Current Livery | BR(S) Green |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | P 1989, Gloucs Warks Railway. At Long Marston by 4/02. By 06/08: refurbished and operational for Stratford & Broadway Railway. From Long Marston Exchange Sidings to Mid Norfolk Railway by 12/11. 04/21: offered for sale. By 08/21: moved from Mid Norfolk Railway to Aln Valley Railway. |
| Owner | Aln Valley Railway |
| External Structural Condition | Good |
| Internal Structural Condition | Good |
| Underframe Condition | Good |
| External Finish | Good |
| Internal Finish | Good |
| 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 | Yes |
| Survey Date | 24/09/2012 |
| Surveyor | David Wigley |
| Photo Date | 30/12/2017 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 30/05/2023 |
