| Present Location | Penn |
| County Location | Buckinghamshire |
| Designed For | London Transport |
| Built by | Metro Cammell |
| Type | DM |
| First Number | 21147 |
| Present Number | 21147 |
| Current Livery | London Transport |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | Body only |
| Original Underframe | No |
| Original Bogies/Wheelsets | No |
| Additional Notes | District Line. 660 volt 4 rail. Used as film set at Shepperton, later cafe at Camden Market. On road trailer chassis - bogies elsewhere. At Mangapps, then Museum of Power, Langford (Essex); then at Hanwell Routemaster Heritage Centre. By 03/21: located in a field beside Pauls Hill, Penn, between High Wycombe and Beaconsfield. 07/23: confirmed still in situ: owner's plan is to turn it in the future into glamping accommodation. |
| Owner | Private |
| External Structural Condition | Satisfactory |
| Internal Structural Condition | Satisfactory |
| Underframe Condition | Derelict/Not Present |
| External Finish | Satisfactory |
| Internal Finish | Satisfactory |
| 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 | Not Applicable |
| Degree of External Authenticity | Fair |
| Degree of Internal Authenticity | Fair |
| Degree of Underframe Authenticity | None |
| Rarity | Few |
| Historical Importance | Some Interest |
| Storage | Secure Open |
| Operating | No |
| Survey Date | 07/04/2004 |
| Surveyor | Byron Chamberlain |
| Photo Date | 22/07/2023 |
| Photo by | Peter Wreford |
| At Risk | No |
| Date Record Last Updated | 26/07/2023 |
