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| Operator: | United Automobile | Fleet No: | BU531 |
| Chassis: | Bristol MW5G | Chassis No: | 139.200 |
| Body: | ECW B45F | Body No: | 10438 |
| Mar 59 | In service with United Automobile Services Limited, Darlington (BU531) |
| Nov 64 | Fleet number changed to U531 |
| Jan 69 | Fleet number changed to 2531 |
| Feb 69/Jul 70 | Converted to OMO |
| <Mar 75 | Transferred to Scarborough Country |
| Out of service with United Automobile Services Limited, Darlington (2531) |