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| Operator: | United Automobile | Fleet No: | BU231 |
| Chassis: | Bristol LS5G | Chassis No: | 117.139 |
| Body: | ECW B45F | Body No: | 8869 |
| 1956 | United Automobile Services Limited, Darlington (BU231) |
| Jun 57 | In service with United Automobile Services Limited, Darlington (BU231) |
| Nov 64 | Fleet number changed to U231 |
| Jan 69 | Fleet number changed to 2231 |
| Out of service with United Automobile Services Limited, Darlington (2231) |