| Bay Embroidery Limited | Manufacturing | 2012 |
| Bayside Cafe Limited | Hospitality | 2022 |
| BBB Robotics Limited | Wholesale & retail | 2021 |
| BBT Retail Limited | Wholesale & retail | 2018 |
| BDG Property Limited | Households | 2018 |
| BE Elsewhere Ltd | Administrative & support | 2025 |
| BE ME Tea Limited | Hospitality | 2019 |
| Beach Court (Broadstairs) Management Company Limited | Households | 2006 |
| Beaches International Ltd | Hospitality | 2025 |
| Beanny Limited | Construction | 2014 |
| Beano Cafe Ltd | Hospitality | 2022 |
| Beasley Christopher Limited | Construction | 2005 |
| Beautiful Blinds Limited | Wholesale & retail | 2003 |
| Bedford Court Residents Association Limited | Extraterritorial | 1991 |
| Bedfordshire Forklift Training Limited | Extraterritorial | 2024 |
| Begas (London) Ltd | Construction | 2015 |
| Beijing Cafe Ltd | Hospitality | 2020 |
| Bell Enterprise (Kent) Ltd | Hospitality | 2023 |
| Belmont Park Management Company Limited | Households | 2003 |
| Belvedere Industrial Estate (Management) Limited | Real estate | 1989 |
| Bentley Associates Limited | Construction | 2012 |
| Bentley Construction Contractors Ltd | Construction | 2020 |
| Bentleys Estate Management Ltd | Administrative & support | 2024 |
| Berat Kent Ltd | Hospitality | 2022 |
| Berkshire Forklift Training Limited | Extraterritorial | 2022 |
| Berry Building Consultants Limited | Construction | 2008 |
| Bespoke Architectural Aluminium Ltd | Manufacturing | 2021 |
| Bess Car Sales Limited | Wholesale & retail | 2025 |
| Beta Star 1 Ltd | Wholesale & retail | 2018 |
| Betterlimited Ltd | Information & communication | 2022 |
| Bevan Mansions Limited | Administrative & support | 2013 |
| Beverley Court (Broadstairs) Limited | Households | 2005 |
| Beyond Luxe Ltd | Wholesale & retail | 2023 |
| Beyond the Page Ltd | Professional & scientific | 2015 |
| Bfpr Ltd | Professional & scientific | 2025 |
| Big Stump Limited | Information & communication | 2025 |
| BIO Restore Ltd | Administrative & support | 2025 |
| Birchgate Investments Limited | Financial services | 2015 |
| Birchington Pet Shop Limited | Wholesale & retail | 2016 |
| Birchwood (Kent) Limited | Other services | 2003 |
| Bishops Bourne Properties (Kingsgate) Limited | Households | 1972 |
| Bjihawkins Limited | Professional & scientific | 2023 |
| Blabbermouth GIN Ltd | Wholesale & retail | 2024 |
| Black Sheep Comedy Limited | Arts & recreation | 2003 |
| Blackshaw Property Investments Limited | Real estate | 2015 |
| Blagdon Cottages Limited | Households | 2018 |
| Blankdistributors Ltd | Wholesale & retail | 2020 |
| Blaxland Breaks Limited | Real estate | 2023 |
| Blaze Signs Holdings Limited | Professional & scientific | 2006 |
| Blaze Signs Limited | Manufacturing | 1980 |
| Blinkbox Eco Offices Limited | Real estate | 2022 |
| Blinkbox Eco Storage Limited | Real estate | 2017 |
| Blossom Arcade Limited | Professional & scientific | 2025 |
| Blue Cube Productions Ltd | Information & communication | 2014 |
| Blue Frog Creations Limited | Administrative & support | 2005 |
| Blue Jeans Brown Shoes Limited | Professional & scientific | 2020 |
| Blue Sky Contractors Limited | Energy | 2014 |
| Blueberry Close Residents Association Limited | Hospitality | 2003 |
| Blueswift Frameworks Ltd. | Construction | 2023 |
| Bluewave & Associates Ltd | Professional & scientific | 2013 |
| Body Angels (UK) Limited | Health & social care | 2013 |
| Body of Fruit Ltd | Extraterritorial | 2024 |
| Boiler IQ Ltd | Construction | 2019 |
| Bolder Holdings Limited | Extraterritorial | 2024 |
| Bonfood Ltd | Hospitality | 2024 |
| Bonnet DE Douche Limited | Hospitality | 2024 |
| Booshka & Booshka Ltd | Real estate | 2024 |
| Bootley Ltd | Wholesale & retail | 2024 |
| Born Maverick ALT Pro Ltd | Professional & scientific | 2021 |
| Bosco Inns Ltd | Hospitality | 2022 |
| Botany Bay Campers Limited | Hospitality | 2020 |
| Bpmw Limited | Manufacturing | 2025 |
| Bradcap Limited | Other services | 2018 |
| Bradnam Group Ltd | Financial services | 2025 |
| Bradnam Property Management LLP | | 2018 |
| Bradnam Wealth Management (UK) Limited | Financial services | 2010 |
| Bradnam Wealth Management LLP | | 2012 |
| Bradstow House Management Company Limited(The) | Households | 1986 |
| Bradstowe Electrical Services Ltd | Construction | 2023 |
| Bradstowe Holdings Limited | Administrative & support | 2022 |
| Bravo Bravo Limited | Information & communication | 2024 |
| Break the Box Limited | Administrative & support | 2025 |
| Breathing Space Clinic Ltd | Extraterritorial | 2019 |
| Breezi Gaming Ltd | Arts & recreation | 2021 |
| Brewtek Ltd | Professional & scientific | 2021 |
| Bridge Hill House Management Company Limited | Households | 1996 |
| Broad Street Hall Ltd | Other services | 2015 |
| Broad Vapes Ltd | Wholesale & retail | 2019 |
| Broadmark Creative Services Limited | Professional & scientific | 2016 |
| Broadsearch Property Ltd | Other services | 2016 |
| Broadstairs Cafe and Sandwich Bar Ltd | Hospitality | 2025 |
| Broadstairs & ST. Peter's C.C. Limited | Other services | 2014 |
| Broadstairs Botanicals CIC | Manufacturing | 2024 |
| Broadstairs Carpets Limited | Wholesale & retail | 2009 |
| Broadstairs Catering Ltd | Hospitality | 2024 |
| Broadstairs Coastal Limited | Wholesale & retail | 2026 |
| Broadstairs Commercial Centre Ltd | Real estate | 2019 |
| Broadstairs Company Secretaries Limited | Financial services | 2013 |
| Broadstairs Curry House Ltd | Hospitality | 2024 |
| Broadstairs Dickens Festival CIC | Professional & scientific | 2018 |