| Present Location | Midland Railway Centre |
| County Location | Derbyshire |
| Designed For | BR |
| Build Location | Derby |
| Built by | BR |
| Diagram number | 598 |
| Lot number | 30530 |
| Type | DMBS |
| First Number | 51669 |
| Later Numbers | M51669 |
| Present Number | 51669 |
| Current Livery | BR multiple unit green livery |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | Class 115. P 1993 at County School Station: then to Colne Valley, then with DMBS 51849 (qv) to Spa Valley 3/11/99. Was owned by Suburban Preservation whilst on Colne Valley: new ownership not known. Restoration completed 2003. 03/19: to Midland Railway Centre for restoration (with new owner). 11/19: restoration work on engine begun. |
| 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 | Very Good |
| Degree of Internal Authenticity | Very Good |
| Degree of Underframe Authenticity | Very Good |
| Rarity | Several |
| Historical Importance | Some Importance |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 29/09/1998 |
| Surveyor | Mike Stanbury |
| Photo Date | 01/05/2010 |
| Photo by | Stuart Pay |
| At Risk | No |
| Date Record Last Updated | 12/12/2021 |
