| Present Location | Great Yarmouth |
| County Location | Norfolk |
| Designed For | BR |
| Build Location | Derby |
| Built by | BR |
| Diagram number | 186 |
| Lot number | 30798 |
| Type | BSO |
| First Number | 9448 |
| Later Numbers | M9448 WDS9448 |
| Present Number | 9448 |
| Current Livery | Valley Lines |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | "Few" only to Lot Number. By 07/08 to Carnforth (fair condition). By 10/09 to Mid Norfolk where under active restoration. Current livery is Maroon with "Valley Lines" branding midway along side. In storage sidings near Thuxton at 03/17. 09/20: moved to Eastern Rail Services site at former Great Yarmouth carriage sidings. |
| External Structural Condition | Satisfactory |
| Internal Structural Condition | Satisfactory |
| Underframe Condition | Good |
| External Finish | Satisfactory |
| 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 | Some replaced/reproduced material |
| Degree of External Authenticity | Very Good |
| Degree of Internal Authenticity | Very Good |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Few |
| Historical Importance | Some Interest |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 26/07/2008 |
| Surveyor | Kevin Stroud |
| Photo Date | 30/12/2017 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 22/11/2020 |
