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| Operator: | United Automobile | Fleet No: | BU521 |
| Chassis: | Bristol MW5G | Chassis No: | 139.105 |
| Body: | ECW B45F | Body No: | 9836 |
| 1958 | United Automobile Services Limited, Darlington (BU521) |
| Mar 59 | In service with United Automobile Services Limited, Darlington (BU521) |
| Nov 64 | Fleet number changed to U521 |
| Feb/Dec 68 | Converted to OMO |
| Jan 69 | Fleet number changed to 2521 |
| Jan 74 | Repainted in Poppy red |
| <Aug 78 | Out of service with United Automobile Services Limited, Darlington (2521) |
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Owner : United Automobile BU521 Location : Valley Bridge Bus Station, Scarborough Date : Not Known
(C) Brian Botley |