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| Operator: | United Automobile | Fleet No: | BU581 |
| Chassis: | Bristol MW5G | Chassis No: | 152.188 |
| Body: | ECW B45F | Body No: | 11239 |
| Jun 60 | In service with United Automobile Services Limited, Darlington (BU581) |
| Nov 61 | Converted to OMO |
| Nov 64 | Fleet number changed to U581 |
| Jan 69 | Fleet number changed to 2581 |
| <Mar 75 | Transferred to Alnwick |
| Sep 75 | Out of service with United Automobile Services Limited, Darlington (2581) |
| Dec 75 | Unidentified Owner (dealer) |