| Blackwood Auto Centre | Blackwood | NP12 3SP | 4 | View → |
| Blackwood Service Station Ltd | Wigton | CA7 1AQ | 4, 5, 7 | View → |
| Blade Motor Cycles Limited | Abingdon | OX14 1RN | 1, 2 | View → |
| Blade Motor Cycles Limited | Stratford upon Avon | CV37 0HR | 1, 2 | View → |
| Blade Motor Cycles Limited | Gloucester | GL51 7AP | 1, 2 | View → |
| Blade Motor Cycles Limited | Cheltenham | GL51 7PA | 1, 2 | View → |
| Blade Motor Group Limited | Salisbury | SP2 7QD | 4 | View → |
| Blade Motor Group Limited | Dorchester | DT1 1XU | 4, 5, 7 | View → |
| Blade Motor Group Limited | Yeovil | BA22 8RT | 4 | View → |
| Blade Motor Group Limited | Salisbury | SP2 7QD | 4 | View → |
| Blade Motor Group Limited | Gloucester | GL2 9DJ | 4 | View → |
| Blaenau Gwent Borough Council | Brynmawr | NP23 4YF | 4 | View → |
| Blaenwaun Garage Ltd | Carmarthen | SA33 4BP | 1, 2, 4, 5, 7 | View → |
| Blagdens Motor Engineers Sheffield Limited | Sheffield | S3 8BL | 3, 4 | View → |
| Blair Atholl Garage | Pitlochry | PH18 5SX | 4, 7 | View → |
| Blake and Squires Ltd | Bristol | BS48 1EH | 4 | View → |
| Blake Services Stroud Ltd | Stroud | GL5 2SE | 4, 5, 7 | View → |
| Blake Street Garage | Stoke on Trent | ST6 4BE | 4 | View → |
| Blakemores Autos | Welshpool | SY21 7AZ | 1, 2, 4, 5, 7 | View → |
| Blakeney Garage Ltd | Norfolk | NR25 7AY | 4 | View → |
| Blakes MOT and Service Centre Limited | South Croydon | CR2 6UR | 4, 5, 7 | View → |
| Blakey's MOT Center Ltd | Merthyr Tydfil | CF48 2YG | 4 | View → |
| Blandford Heights MOT and Service Centre Ltd | Blandford Forum | DT11 7UR | 4 | View → |
| Blandford MOT and Service Centre | Blandford | DT11 9NE | 1, 2, 3, 4, 5, 7 | View → |
| Blandford Road Garage | Blandford | DT11 0SF | 4 | View → |
| Blantyre MOT Testing Center | Blantyre | G72 0DR | 4, 7 | View → |
| Blaydon Burn MOT Centre | Blaydon | NE21 6JJ | 1, 2, 4, 5, 7 | View → |
| Bleachworks Bike Shed | Bolton | BL7 8AG | 1, 2 | View → |
| Bleak Hall Motors | Milton Keynes | MK6 1LN | 4 | View → |
| Blendworth Tyres Limited | Portsmouth | PO9 6BB | 4 | View → |
| Blenheim Motors Ltd | London | SE15 4QL | 4 | View → |
| Blenk Engineering Limited | York | YO26 6PB | 4 | View → |
| Bletchley's Car Clinic | Bletchley | MK2 3HU | 4, 7 | View → |
| Blights Motors Ltd | Bideford | EX39 3ET | 4 | View → |
| Blitz MOT Centre | Chester-le-Street | DH3 1JG | 4, 7 | View → |
| Block Works Garage | Stromness, Orkney | KW16 3LL | 4, 7 | View → |
| Block-Aid Limited | Manchester | M12 4HW | 4, 5, 7 | View → |
| Blofield Motor Company Limited | Norwich | NR13 4DS | 4 | View → |
| Bloggs Garage | North Tawton | EX20 2BB | 1, 2, 4 | View → |
| Bloomfield Motor Services | Harlow | CM20 2DW | 4, 5, 7 | View → |
| Blossom Motor Company | Manchester | M4 5DN | 4 | View → |
| Blossomgate Motors Ltd | Ripon | HG4 1AB | 1, 2, 4 | View → |
| BLS Automotive | Lincoln | LN5 8XF | 4 | View → |
| Bluauto Limited | Maresfield | TN22 3DN | 4 | View → |
| Blue Anchor Bay Garage | Minehead | TA24 6JZ | 4 | View → |
| Blue Bell Altrincham | Altrincham | WA15 8BA | 4 | View → |
| Blue Bell MOT and Service Centre Limited | Heywood | OL10 4AP | 4 | View → |
| Blue Bird Garage | Colchester | CO5 0AD | 4 | View → |
| Blue Cap Garage | Northwich | CW8 2DW | 4 | View → |
| Blue Garage | Anglesey | LL60 6HR | 4, 7 | View → |
