| Present Location | NRM Shildon |
| County Location | Durham |
| Designed For | BR |
| Build Location | Derby |
| Built by | BR |
| Diagram number | 172 |
| Lot number | 30732 |
| Type | BCK |
| First Number | 21274 |
| Present Number | 21274 |
| Current Livery | BR InterCity |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | P 1995 NRM; stored MoD Kineton 1994-7 during NRM rebuild. Still there/returned there 8/00. To Shildon 2004. In good "as received" condition. Probably the last Mark 1 built still essentially in its original passenger-carrying condition. |
| Owner | National Railway Museum |
| External Structural Condition | Good |
| Internal Structural Condition | Good |
| Underframe Condition | Good |
| External Finish | Fair |
| 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 Building |
| Operating | No |
| Survey Date | 19/02/2010 |
| Surveyor | Kevin Stroud |
| Photo Date | 02/09/2015 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 08/06/2023 |
