| Beagle Books Ltd | Information & communication | 2023 |
| Beagle Fire Prevention Limited | Construction | 2019 |
| Beagle Wills Limited | Other services | 2025 |
| Bealders Holdings Ltd | Financial services | 2025 |
| Beam & Sparc Ltd | Manufacturing | 2025 |
| Beam Contracting Ltd | Construction | 2018 |
| Beam Kitchens Ltd | Wholesale & retail | 2021 |
| Beans Umbrella UK Limited | Information & communication | 2025 |
| Bear Cross Pharma Ltd | Wholesale & retail | 2023 |
| Bear Estates Limited | Real estate | 2023 |
| Bearwood Management Company Limited | Real estate | 1999 |
| Beatnik Collective Ltd | Professional & scientific | 2020 |
| Beatons Tea Rooms Limited | Hospitality | 2009 |
| Beau Bijou Ltd | Wholesale & retail | 2014 |
| Beau Court Freehold Limited | Households | 2004 |
| Beaufort House Residents Association Limited | Hospitality | 2001 |
| Beaufoys Court Management Limited | Households | 1981 |
| Beaulieu Financial Planning Limited | Extraterritorial | 2012 |
| Beaulieu Lodge (Westbourne) Limited | Households | 2000 |
| Beaulieu Road Management Company Limited | Households | 2008 |
| Beaumont Fine Art Group Limited | Wholesale & retail | 2023 |
| Beautifully Legal Ltd | Information & communication | 2023 |
| Beauty by Sidney Limited | Other services | 2018 |
| Beauty Dorset Limited | Other services | 2017 |
| Beauty Nails Ltd | Other services | 2025 |
| Beauty Perfections by Cassie Ltd | Other services | 2025 |
| Beauty Skinthetics Clinic Ltd | Other services | 2025 |
| Beauty Skinthetics Training Academy Ltd | Education | 2025 |
| Beavan Property Group Ltd | Real estate | 2025 |
| BEC Admin Ltd | Wholesale & retail | 2020 |
| BEC Developments UK Limited | Construction | 2007 |
| BEC Engineering Project Consulting Limited | Professional & scientific | 2021 |
| Beckley Brown Ltd | Real estate | 2019 |
| Beckox Group Holdings Limited | Professional & scientific | 2016 |
| Beckox Property Holdings Limited | Professional & scientific | 2016 |
| Becks Electrical Limited | Construction | 2017 |
| Becks MEP Limited | Construction | 2017 |
| Becks Plumbing and Heating Limited | Construction | 2002 |
| Becton Limited | Real estate | 2001 |
| Beddoe Apartments Limited | Hospitality | 2020 |
| Beddoe Developments Ltd | Hospitality | 2015 |
| Beddoe Group Investments Limited | Real estate | 2022 |
| Bedford House (Amoy Street) Management Company Ltd | Households | 2017 |
| Bedrock Software Limited | Wholesale & retail | 2002 |
| Bedtime (Bournemouth) Limited | Real estate | 1999 |
| BEE Creations Ltd | Wholesale & retail | 2025 |
| BEE Dreams Ltd | Transport & logistics | 2015 |
| BEE My Honey Ltd | Wholesale & retail | 2020 |
| BEE Real Estate Limited | Real estate | 2018 |
| Beech Court (Bournemouth) Limited | Households | 2006 |
| Beech Grange Freehold Limited | Households | 2025 |
| Beechcroft (BH8) RTM Company Limited | Households | 2024 |
| Beechcroft Flat Management Limited | Households | 1992 |
| Beechey Court Management Company Limited | Households | 1974 |
| Beechey Lodge Limited | Households | 2007 |
| Beechfield Freehold Limited | Households | 2012 |
| Beechrose Developments Limited | Extraterritorial | 1996 |
| Beechvale Construction Limited | Construction | 2006 |
| Beechwood 18 & 18A Freehold Limited | Other services | 2020 |
| Beechwood Court (Bournemouth) Management Limited | Households | 1995 |
| Beechwood Court (Southbourne) Management Company Limited | Households | 1983 |
| Beechwood Freehold Management Company Limited | Households | 2019 |
| Beechwood Lodge Freehold Limited | Extraterritorial | 2002 |
| Beelabs Ltd | Manufacturing | 2022 |
| Beer Assets Ltd | Administrative & support | 2024 |
| Beer Consulting Ltd | Information & communication | 2012 |
| Beestone Ltd | Real estate | 2021 |
| Beet Language Centre Limited | Education | 2001 |
| Beezums Ltd | Real estate | 2026 |
| Beganya Business Services Limited | Professional & scientific | 2017 |
| Behaviour UK Limited | Information & communication | 1999 |
| BELAIRE22 Ltd | Financial services | 2026 |
| Belbury Estates LLP | | 2020 |
| Belgrave Court (Management) Limited | Households | 1959 |
| Belgravia Construction Services (South) Limited | Wholesale & retail | 2005 |
| Belgrove Property Services Limited | Construction | 2013 |
| Believe in the Craft Limited | Information & communication | 2021 |
| Bella Bean Limited | Hospitality | 2015 |
| Bella Carousel Childrens Boutique Limited | Wholesale & retail | 2016 |
| Bella Luxe Limited | Information & communication | 2025 |
| Bellaggio-Aysu Ltd | Hospitality | 2023 |
| Belle Maison ( Boutique Apartments) Ltd | Real estate | 2020 |
| Belle VUE Electrics Ltd | Manufacturing | 2017 |
| Belle VUE Flat Management (Bournemouth) Limited | Households | 1987 |
| Belle VUE Flat Management (Parkstone) Limited | Real estate | 1988 |
| Belle VUE Gardens Limited | Households | 2001 |
| Bellevue Court (Poole) Management Company Limited | Households | 1986 |
| Bellevue ST Nicholas Limited | Households | 2001 |
| Bellona Freehold Limited | Households | 2019 |
| Belly Bite Lures Limited | Manufacturing | 2024 |
| Belvoir Group Limited | Financial services | 2011 |
| Belvoir Property Management (U.K.) Limited | Real estate | 1995 |
| BEN JA Clothing Ltd | Wholesale & retail | 2024 |
| BEN Smith Joinery Limited | Construction | 2006 |
| BEN Wilfred Apartments Ltd | Real estate | 2020 |
| BEN Wilfred Properties Ltd | Real estate | 2017 |
| Benamor Properties Ltd | Real estate | 2024 |
| Benbow Properties (South) Limited | Real estate | 2022 |
| Bench Grade Heating Limited | Construction | 2023 |
| Benchmark Bournemouth Limited | Wholesale & retail | 2015 |