| Present Location | Didcot |
| County Location | Oxfordshire |
| Designed For | GWR |
| Build Location | Swindon |
| Built by | GWR |
| Diagram number | U29 |
| Lot number | 370 |
| Type | CZ |
| First Number | 820 |
| Later Numbers | 6820, 9962 |
| Present Number | W9962W |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 6 wheel |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | Clerestory tri-composite. 2nd class to 3rd class c 1907. To Departmental use c 1952. P? at Bristol Museum. To Swindon 1989-93 ('NRM on Tour'). Then NRM York. To Swindon Museum by 01/00. To Locomotion, Shildon by 11/04. 04/22: to Didcot Railway Centre. |
| Owner | National Railway Museum |
| External Structural Condition | Poor but Substantially Complete |
| Internal Structural Condition | Derelict/Not Present |
| Underframe Condition | Fair |
| External Finish | Poor and Incomplete |
| 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 | Fair |
| Degree of Internal Authenticity | None |
| Degree of Underframe Authenticity | Good |
| Rarity | Few |
| Historical Importance | Exceptionally Important |
| Storage | Secure Building |
| Operating | No |
| Survey Date | 19/02/2010 |
| Surveyor | Kevin Stroud |
| Photo Date | 24/09/2023 |
| Photo by | Peter Wreford |
| At Risk | No |
| Date Record Last Updated | 19/01/2024 |
