| Aymes Projects Limited | Real estate | 2026 |
| Azania Ltd | Information & communication | 2011 |
| Azure Films Limited | Information & communication | 2015 |
| B Wyatt Holdings Ltd | Financial services | 2020 |
| B Wyatt Properties Ltd | Real estate | 2020 |
| Backup Rigging Limited | Arts & recreation | 2008 |
| Badger Wood Place Management Ltd. | Households | 1989 |
| Balti House Fordingbridge Ltd | Hospitality | 2018 |
| Barns at Gorley Limited | Arts & recreation | 2025 |
| Barratts Coaches Limited | Transport & logistics | 1982 |
| Barrell Treecare Limited | Professional & scientific | 2004 |
| Barton Hall RTM Company Ltd | Administrative & support | 2021 |
| Beach Life Holdings Limited | Financial services | 2019 |
| Beach Life Property Limited | Real estate | 2019 |
| Bearhouse Saddlery Limited | Manufacturing | 2010 |
| Beastly Consulting Company Ltd | Professional & scientific | 2016 |
| Beccy's House Ltd | Real estate | 2022 |
| Beef Productions Ltd | Information & communication | 2023 |
| Bell Hill Dorset Limited | Arts & recreation | 2003 |
| BEN Mosley Art Limited | Arts & recreation | 2024 |
| Bespoke Vehicle Valeting Limited | Wholesale & retail | 2019 |
| Better Saddles Limited | Wholesale & retail | 2004 |
| Betterdegree.Ai Ltd | Information & communication | 2025 |
| Bickton Granary Management Limited | Households | 1988 |
| Bickton Mill Management Limited | Households | 1985 |
| Bird Control Systems Limited | Manufacturing | 2013 |
| Biscuits Childcare Ltd | Health & social care | 2025 |
| Bishops Court (Broadstone) Limited | Households | 1978 |
| BKB Europe Limited | Arts & recreation | 2026 |
| Blake Property Sourcing Ltd | Real estate | 2025 |
| Blissford Graphic Signs Limited | Other services | 1988 |
| Blue Flamingo Therapies Ltd | Wholesale & retail | 2018 |
| Blue Valley Mews Management Company Limited | Households | 2001 |
| BOB Productions Ltd | Hospitality | 2026 |
| Bobbi&Orca Ltd | Wholesale & retail | 2024 |
| Bospace Ltd | Construction | 2022 |
| Bournemouth (T) Hairdressing Limited | Other services | 2019 |
| Bramble Bookbinders Ltd | Manufacturing | 2011 |
| Bramley House Management (Bournemouth) Limited | Households | 2002 |
| Bramshaw Garage (Hampshire) Limited | Wholesale & retail | 1964 |
| Branagan Property Ltd | Real estate | 2026 |
| Brandlifi Limited | Information & communication | 2024 |
| Branksea Grange (Management) Limited | Households | 1980 |
| Breakthewire Ltd | Professional & scientific | 2025 |
| Bridge Court (Fordingbridge) Limited | Households | 1994 |
| Bridle Way Residents Limited | Real estate | 2003 |
| Bright Star Psychology Limited | Education | 2025 |
| Brighten and Hope Pictures Limited | Information & communication | 2024 |
| Brightham LLP | | 2016 |
| Brightstar Apocalypso Limited | Information & communication | 2023 |
| Brightstar Content Limited | Information & communication | 2016 |
| Brightstar Film and TV Ltd | Information & communication | 2018 |
| Brightstar Films Limited | Information & communication | 2017 |
| Brightstar Theatre Limited | Information & communication | 2019 |
| Brilliant Beginnings Limited | Other services | 2013 |
| British Percheron Horse Society(Incorporated)(The) | Agriculture & fishing | 1919 |
| Brock and Gande Limited | Health & social care | 2015 |
| Brunswick (Bournemouth) Management Company Limited | Households | 2000 |
| Bruyn Court Freehold Limited | Households | 2001 |
| BTW Group Ltd | Financial services | 2026 |
| BTW Live Ltd | Wholesale & retail | 2026 |
| Bulk Bear Ltd | Wholesale & retail | 2021 |
| Bull Inn WSG Ltd | Hospitality | 1987 |
| Burgate Court Management Limited | Households | 2007 |
| Burgate Fields Residents Company Limited | Households | 1987 |
| Burgate Litigation Services Ltd | Professional & scientific | 2015 |
| Butler and Coward Farms LLP | | 2012 |
| BY Intuition Ltd | Education | 2019 |
| Byzantium Gallery Limited | Arts & recreation | 2012 |
| C B Drainage Consultants Ltd | Construction | 2019 |
| C Blake Plant Hire Ltd | Administrative & support | 2019 |
| Cain Bio-Engineering Limited | Construction | 2003 |
| Camatimi Limited | Households | 2004 |
| Canute Management Limited | Real estate | 1980 |
| Car Simple Limited | Financial services | 2023 |
| Care 4 U Hampshire Ltd | Health & social care | 2010 |
| Carey Watson Interiors Ltd | Professional & scientific | 2019 |
| Carl Hillwood Hairdressing Limited | Other services | 2011 |
| Carlton Mount Management (Bournemouth) Limited | Households | 1994 |
| Carlyia Limited | Construction | 2008 |
| Caroline Lita Limited | Manufacturing | 2024 |
| Cartwheel Inn Whitsbury Limited | Extraterritorial | 2000 |
| CCJ Removal Ltd | Professional & scientific | 2023 |
| CG Wealth Management Limited | Financial services | 2022 |
| CGM Plumbing & Heating Ltd | Construction | 2017 |
| Champion Sponsorship Ltd | Professional & scientific | 2018 |
| Champions (Fordingbridge) Limited | Other services | 2020 |
| Chapel Street Properties Ltd | Construction | 2018 |
| Charles Leith Ltd | Information & communication | 1996 |
| Charlie Smith Hairdressing Limited | Other services | 2015 |
| Charlton (Electrical Contractors) Limited | Construction | 2007 |
| Charm Holdings Limited | Financial services | 2019 |
| Chevrons Living Limited | Hospitality | 2023 |
| Chief Data Office Limited | Professional & scientific | 2013 |
| Children’S Coastal Care Consultancy Ltd | Health & social care | 2023 |
| Chilli Hugger Software Limited | Information & communication | 2008 |
| Chiverton Creative Limited | Professional & scientific | 2016 |
| Chrysalis Digital Limited | Information & communication | 2013 |
| Circular Consulting Ltd | Professional & scientific | 2020 |
| Cisa Consulting Ltd | Professional & scientific | 2018 |