| Present Location | North Norfolk |
| County Location | Norfolk |
| Designed For | BR |
| Build Location | Derby |
| Built by | BR |
| Diagram number | 7 / AS403 |
| Lot number | 30960 |
| Type | SLEP |
| First Number | 10525 |
| Later Numbers | E10525 |
| Present Number | E10525 |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | No |
| Original Bogies/Wheelsets | No |
| Additional Notes | Convertible sleeper: 12 1st, or 24 2nd accommodation. Early 1990s: stored in MT Sidings of the Arncott site at MoD Bicester from where sold into preservation 1994 at North Norfolk. BT10 bogies replaced with 'accommodation' Commonwealth bogies before preservation. Used for staff accommodation. |
| Owner | North Norfolk Railway |
| External Structural Condition | Very Good |
| Internal Structural Condition | Satisfactory |
| Underframe Condition | Poor and Incomplete |
| External Finish | Good |
| 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 | Much replaced/reproduced material |
| Degree of External Authenticity | Fair |
| Degree of Internal Authenticity | Good |
| Degree of Underframe Authenticity | Fair |
| Rarity | Many |
| Historical Importance | no Immediate Importance/Not Applicable |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 12/08/1999 |
| Surveyor | Mike Stanbury |
| Photo Date | 15/07/2013 |
| Photo by | Alan Tagg |
| At Risk | No |
| Date Record Last Updated | 07/07/2021 |
