| Present Location | Carnforth |
| County Location | Lancashire |
| Designed For | BR |
| Build Location | Swindon |
| Built by | BR |
| Diagram number | 73 / AD103 |
| Lot number | 30697 |
| Type | FO |
| First Number | 3121 |
| Later Numbers | W3121 |
| Present Number | W3121 |
| Current Livery | BR(W) Chocolate and Cream |
| Gauge | 4ft 8 1/2in |
| Wheel Arrangement | 4-w bogies |
| Original Underframe | Yes |
| Original Bogies/Wheelsets | Yes |
| Additional Notes | In Old Oak Common rail charter formations (in green/cream livery). Then in store at Old Oak Common until its closure in 2009 - then to Eastleigh Arriva TrainCare and later to Eastleigh Works. 01/22: base moved from Eastleigh Works to Nemesis Rail, Burton upon Trent. 01/23: moved from Nemesis Rail to Carnforth, following purchase by West Coast Railway Company from Riviera Trains. |
| Owner | West Coast Railway Company |
| 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 | 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 | Many |
| Historical Importance | no Immediate Importance/Not Applicable |
| Storage | Secure Open |
| Operating | Yes |
| Survey Date | 21/08/2004 |
| Surveyor | Mike Stanbury |
| Photo Date | 29/07/2023 |
| Photo by | Steve West |
| At Risk | No |
| Date Record Last Updated | 18/08/2023 |
