Durham District Services was formed in August 1950 by four operators who were operating bus services in the Central and South Durham areas. These operators were:
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Express Omnibus Co (Durham) Ltd, Durham | ||
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ABC Motor Services, Ferryhill | ||
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Darlington Triumph Services Ltd, Darlington | ||
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Gilesgate Moor Garage, Durham |
Durham District Services merged with United Automobile Services in 1968 and all vehicles were transferred to UAS.

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For full details click here. |
| Fleet No | Reg No | In service | Out Service | Original Op | Remarks |
| DBU8 | SHN 721 | 1964 | 1967 | UAS BU31 | |
| DBU9 | SHN 739 | 1964 | 1968 | UAS BU49 | |
| DU32 | SHN 722 | Nov 64 | 1968 | UAS BU32 | |
| DU33 | SHN 723 | Nov 64 | 1968 | UAS BU33 | |
| DU34 | SHN 724 | Nov 64 | 1967 | UAS BU34 | |
| DU35 | SHN 725 | Nov 64 | 1968 | UAS BU35 | |
| DU42 | SHN 732 | Nov 64 | 1968 | UAS BU42 | |
| DU43 | SHN 733 | Nov 64 | 1968 | UAS BU43 | |
| DU44 | SHN 734 | Nov 64 | 1968 | UAS BU44 | |
| DU45 | SHN 735 | 1964 | <Jan 69 | UAS BU45 |

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Durham District |
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Durham District Services |

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Barnard Castle |
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Darlington (closed 1961 - vehicles transferred to UAS Depot) |
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Durham (closed 1961 - vehicles transferred to UAS Depot) |
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Ferryhill |
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Middlebrough (UAS Garage) |
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Sunderland |
