| Present Location | Churnet Valley |
| County Location | Staffordshire |
| Designed For | BR |
| Build Location | York |
| Built by | BR |
| Diagram number | 94 |
| Lot number | 30376 |
| Type | SO |
| First Number | 4779 |
| Later Numbers | M4779 |
| Present Number | 4779 DIANA |
| Current Livery | Pullman (pseudo) |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | P 1991 Llangollen, Chinnor 04/95. To Churnet Valley by 04/02. Overhaul as high class dining vehicle in non-authentic green livery, and with many alterations and additions to the interior. Conversion still ongoing when seen 08/05. Note oval toilet window. By 09/13: painted in mock 'Northern Belle' livery and named 'Diana' after a long-serving volunteer whose legacy paid for the refurbishment. 02/20: interior being upgraded for the 2020 season as part of Winter maintenance. |
| Owner | Churnet Valley Railway plc |
| External Structural Condition | Very Good |
| Internal Structural Condition | Very Good |
| Underframe Condition | Very Good |
| External Finish | Very Good |
| Internal Finish | Very Good |
| Degree of External Originality | Some replaced/reproduced material |
| Degree of Internal Originality | Some replaced/reproduced material |
| Degree of Underframe/Running Gear Originality | As built/last Passenger rebuild (BR or before) |
| Degree of External Authenticity | Fair |
| Degree of Internal Authenticity | Poor |
| Degree of Underframe Authenticity | Good |
| Rarity | Many |
| Historical Importance | Some Interest |
| Storage | Secure Open |
| Operating | Yes |
| Survey Date | 28/08/2005 |
| Surveyor | Kevin Stroud |
| Photo Date | 06/04/2019 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 22/06/2023 |
