| 1-5 Pinetops Management Company Limited | Households | 2014 |
| 2 the Waterloo SPV Limited | Real estate | 2026 |
| 26 Roundstone Street Trowbridge Limited | Households | 2024 |
| 2GC Enterprises Limited | Information & communication | 2007 |
| 2ND2NONE Driving School Limited | Education | 2016 |
| 3 County Locks Limited | Other services | 2022 |
| 36 Halford Road Management Limited | Households | 2001 |
| 3D Central Ltd | Wholesale & retail | 2021 |
| 44 Stratford Road Ltd | Households | 2024 |
| 5 Acres (SW) Limited | Wholesale & retail | 2016 |
| 8 Ongar Road Limited | Households | 2001 |
| 918 Coffee Co Limited | Wholesale & retail | 2013 |
| A & P Hare Limited | Construction | 2018 |
| A D Finishes Limited | Construction | 2010 |
| A.D. Costa Ltd | Construction | 2021 |
| A.D.H Contractors Ltd | Construction | 2024 |
| Aberdata Limited | Agriculture & fishing | 1986 |
| Accounting and Office Solutions Ltd | Professional & scientific | 2014 |
| Ace-Eco Limited | Construction | 2004 |
| Activate Human Capital Ltd | Professional & scientific | 2025 |
| Adam Slatter Limited | Construction | 2017 |
| Adamkatyroofing Ltd | Construction | 2026 |
| Adelphi Parkland Limited | Information & communication | 1992 |
| Adept Aviation Solutions Ltd | Professional & scientific | 2021 |
| Aero Overseas Ltd | Wholesale & retail | 2023 |
| Africa Odyssey Limited | Administrative & support | 2011 |
| Ainsbrook Consultancy Ltd | Professional & scientific | 2011 |
| AJ Caterers UK Limited | Agriculture & fishing | 1996 |
| Alan Collins Limited | Construction | 2015 |
| Albion Handling Limited | Wholesale & retail | 2010 |
| Alepine Ltd | Manufacturing | 2014 |
| Alex Merefield Heating and Plumbing Ltd | Construction | 2023 |
| Aligned Communications Limited | Professional & scientific | 2021 |
| Allum and Sidaway Holdings Limited | Wholesale & retail | 1976 |
| Alma Arts Limited | Arts & recreation | 2019 |
| ALTERN8 Events Ltd | Hospitality | 2025 |
| Alveberdon Farming Limited | Financial services | 1997 |
| Amakuru (UK) Ltd | Education | 2012 |
| Amakuru Education Ltd | Education | 2018 |
| Amuzika Ltd | Wholesale & retail | 2015 |
| Angelfish Software Limited | Information & communication | 2007 |
| Appanage Vacations Ltd | Hospitality | 2021 |
| Appian Construction Limited | Construction | 2015 |
| Apple Blossom Properties Ltd | Real estate | 2023 |
| Aqua Cleaning (Services) Limited | Administrative & support | 2014 |
| Aqua-Tractor Limited | Manufacturing | 2023 |
| Arete Prints Limited | Extraterritorial | 2024 |
| Artcentric Ltd | Professional & scientific | 2025 |
| Artisan Framing Limited | Manufacturing | 2025 |
| Artisanlink Limited | Wholesale & retail | 2023 |
| Arundel (Bath) Limited | Financial services | 2024 |
| Ashmore Advisory Limited | Other services | 2017 |
| Assessed Security Ltd | Administrative & support | 2025 |
| Astarla Ltd | Arts & recreation | 2024 |
| Atelier Elizabeth Rose Ltd. | Professional & scientific | 2016 |
| Atkinson Automotive Security Ltd | Wholesale & retail | 2025 |
| Aurora SW Care Ltd | Health & social care | 2026 |
| Ayton Products Ltd | Wholesale & retail | 2022 |
| B Lucas General Builder Ltd | Construction | 2025 |
| B MAC Contracts Ltd | Construction | 2019 |
| BAK Construction Ltd | Construction | 2018 |
| Barbers Land Ltd | Other services | 2021 |
| Barkers Hill Services Ltd | Information & communication | 2023 |
| Barn Padel Limited | Arts & recreation | 2025 |
| Barnes Couriers Ltd | Transport & logistics | 2025 |
| Bartending Mixology Limited | Hospitality | 2018 |
| BB Fitness Lifestyle Ltd | Other services | 2020 |
| BBR Events Ltd | Other services | 2024 |
| Beaconsfield Property Company Limited | Real estate | 1939 |
| Bear With US Events Ltd | Hospitality | 2025 |
| Beauty by Rochelle Limited | Other services | 2012 |
| Beecholm Management Limited | Real estate | 1983 |
| Beehive Homes (Wimborne) Limited | Construction | 2014 |
| Beingthinkingdoing Limited | Information & communication | 2016 |
| Belle Care Ltd | Health & social care | 2020 |
| Belle VUE Manor Property Investments Ltd | Real estate | 2025 |
| Betpal Holdings Ltd | Information & communication | 2025 |
| Better Packaging Solutions Ltd | Wholesale & retail | 2013 |
| Beyond Voip Limited | Information & communication | 2017 |
| BFR Trading Limited | Real estate | 2011 |
| BH1 Carpentry Contractors Ltd | Construction | 2021 |
| Bickley Court Residents Limited | Households | 2016 |
| BID & Box Solutions Ltd | Administrative & support | 2025 |
| Bigger Bites Dorset Limited | Hospitality | 2004 |
| Black Cat (Salisbury) Limited | Wholesale & retail | 2006 |
| Black Dog Hospitality Limited | Hospitality | 2026 |
| Blackmore Vale Filling Station Ltd | Real estate | 2002 |
| Blackmore Vale Group Limited | Wholesale & retail | 2020 |
| Blackmore Vale Thatching Ltd | Construction | 2026 |
| Blackwater Sciences Limited | Information & communication | 2024 |
| Blinder Bunker International Limited | Extraterritorial | 2012 |
| Bluesight Systems Limited | Information & communication | 2006 |
| Bluestone Medical Ltd | Health & social care | 2024 |
| Bluestone Services (South West) Ltd | Health & social care | 2018 |
| BMV Health & Fitness Ltd | Arts & recreation | 2013 |
| Bocapital Limited | Information & communication | 2022 |
| Bowland Investments Group Limited | Financial services | 2020 |
| Boxall Aroma Ltd | Hospitality | 2024 |
| Braided Cords Manufacturing Ltd | Manufacturing | 2017 |
| Bramdean Projects Limited | Construction | 2011 |