| Present Location | Chasewater Railway |
| County Location | Staffordshire |
| Designed For | BR |
| Build Location | Derby |
| Built by | BREL/Leyland |
| Diagram number | DP235 |
| Lot number | 31004 |
| Type | DMSL |
| First Number | 55621 |
| Present Number | 55621 |
| Current Livery | Northern |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4 wheel |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | P 12/19. With 55571 (qv) formed unit 142030. |
| Owner | Chasewater Railway |
| External Structural Condition | Good |
| Internal Structural Condition | Very Good |
| Underframe Condition | Very 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 | Not Applicable |
| Rarity | n/a |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 25/07/2023 |
| Surveyor | Andrew Jenkins |
| Photo Date | 25/07/2023 |
| Photo by | Andrew Jenkins |
| At Risk | No |
| Date Record Last Updated | 20/09/2023 |
