| Present Location | Great Central |
| County Location | Leicestershire |
| Designed For | BR |
| Build Location | Wolverton |
| Built by | BR |
| Diagram number | 146 |
| Lot number | 30349 |
| Type | SK |
| First Number | 25366 |
| Later Numbers | E25366 W18366 E25366 |
| Present Number | M25366 |
| Current Livery | BR Maroon |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | P 1987. Ex-Old Oak Common. Lot 30349 is unique in having single-bolster bogies. Blue/grey livery, repainted to BR maroon by 01/03/00. ETH fitted. In regular service. |
| External Structural Condition | Good |
| Internal Structural Condition | Good |
| Underframe Condition | Good |
| External Finish | Good |
| Internal Finish | Good |
| Degree of External Originality | Some replaced/reproduced material |
| Degree of Internal Originality | Some replaced/reproduced material |
| Degree of Underframe/Running Gear Originality | As built/last Passenger rebuild (BR or before) |
| Degree of External Authenticity | Very Good |
| Degree of Internal Authenticity | Very Good |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Many |
| Historical Importance | no Immediate Importance/Not Applicable |
| Storage | Secure Open |
| Operating | Yes |
| Survey Date | 08/09/2007 |
| Surveyor | Kevin Stroud |
| Photo Date | 22/09/2021 |
| Photo by | Robert Davidson |
| At Risk | No |
| Date Record Last Updated | 29/10/2021 |
