| Audioplan Limited | Information & communication | 2017 |
| AUM Shanti Ltd | Health & social care | 2015 |
| Aurora Contractors Ltd | Construction | 2018 |
| Auroras Automation Limited | Professional & scientific | 2014 |
| Austin Industries Limited | Extraterritorial | 2024 |
| Autentive Community Interest Company | Health & social care | 2024 |
| Authentic Orange Ltd | Professional & scientific | 2023 |
| Auto Parts & Mirrors Ltd | Wholesale & retail | 2018 |
| Auto Valeting Centre Ltd | Other services | 2015 |
| Autoservices GP Ltd | Manufacturing | 2015 |
| Auztec Ltd | Information & communication | 2025 |
| AV Car Sales Ltd | Wholesale & retail | 2025 |
| AV General Construction Ltd | Construction | 2020 |
| Avalie Digital Ltd | Information & communication | 2023 |
| Avalon Brookes H.E. Estate Consultancy Services Ltd | Administrative & support | 2022 |
| AVB Creative Limited | Arts & recreation | 2024 |
| Avira One Ltd | Wholesale & retail | 2026 |
| AVS Autocare Ltd | Wholesale & retail | 2025 |
| AWU Holding Ltd | Real estate | 2020 |
| AWU Ltd | Health & social care | 2018 |
| Ayaz 12 Property Ltd | Real estate | 2025 |
| B & D Engineering Limited | Manufacturing | 2005 |
| B & Hardy Consulting Limited | Wholesale & retail | 2016 |
| B & M House Management Ltd | Professional & scientific | 2018 |
| B G Mileham Electrical Ltd. | Construction | 2011 |
| B&B Metals Limited | Water & waste | 2025 |
| B&B Skips Limited | Water & waste | 2025 |
| B&S United Minds CIC | Other services | 2025 |
| B-Social Bars Ltd | Hospitality | 2025 |
| Baba Emmanuel Jalal Chaudary & Sons Limited | Construction | 2021 |
| Baba Kebab Margate Ltd | Hospitality | 2019 |
| Babes.Land Ltd | Wholesale & retail | 2022 |
| Babrani Foods Ltd | Manufacturing | 2015 |
| BAD Pictures Ltd | Extraterritorial | 2024 |
| Bada Audit Services Ltd | Professional & scientific | 2025 |
| Bado 44 Ltd | Hospitality | 2023 |
| Baker & Blank Ltd | Manufacturing | 2023 |
| Balikaya Holdings Ltd | Financial services | 2018 |
| Bama Recruitment Ltd | Administrative & support | 2025 |
| Barbara`S Baps Limited | Hospitality | 2006 |
| Bard'Barian ST Ltd | Wholesale & retail | 2026 |
| Baron DE Romanet Ltd | Professional & scientific | 2023 |
| Barton & Woodward Associates Limited | Administrative & support | 2023 |
| Barton Fields Court Limited | Households | 2001 |
| Batchelors Patisserie Limited | Manufacturing | 2014 |
| Bath Place Freehold Limited | Households | 2025 |
| Bauer FS Ltd | Administrative & support | 2024 |
| Bayleaf Brothers Limited | Hospitality | 2024 |
| Bayside Books Limited | Professional & scientific | 2025 |
| Bayview (Thanet) Limited | Households | 2004 |
| BB & B Services Limited | Administrative & support | 2012 |
| Bbrs Enterprises Limited | Information & communication | 2020 |
| BCP Gyms and Fitness Ltd | Arts & recreation | 2015 |
| BD Offshore Ltd | Professional & scientific | 2024 |
| BDG Developments Ltd | Real estate | 2019 |
| BDT Groundwork Services Ltd | Construction | 2022 |
| BE Alarmed Ltd | Hospitality | 2022 |
| BE Content Solutions Limited | Information & communication | 2022 |
| Bear Bright Studios Ltd | Information & communication | 2024 |
| Beatrice Love Ltd | Hospitality | 2022 |
| Beautiful Drunk Pictures Ltd | Information & communication | 2019 |
| Beautiville Limited | Health & social care | 2014 |
| Bebo Creative Ltd. | Manufacturing | 2018 |
| Bedford Court 123 Limited | Real estate | 2022 |
| Beeceecreations Ltd | Wholesale & retail | 2026 |
| Beecology Ltd | Agriculture & fishing | 2024 |
| Beetbar Ltd | Hospitality | 2016 |
| Beetbeds Ltd | Hospitality | 2021 |
| Belvedere Properties (Canterbury) Limited | Real estate | 2013 |
| BEN Tedi Ltd | Hospitality | 2020 |
| Bennett's Construction Kent Limited | Construction | 2025 |
| Bennett’S Damp Kent Ltd | Construction | 2026 |
| Besbike Ltd | Manufacturing | 2020 |
| Bespoke Architectural Aluminum Ltd | Manufacturing | 2017 |
| Bespoked Events Ltd | Administrative & support | 2021 |
| Bess Car Wash Ltd | Administrative & support | 2017 |
| Best of Times Books Ltd | Wholesale & retail | 2026 |
| Beta Earth Ltd | Real estate | 2023 |
| Beth Postle Print Studio Ltd | Professional & scientific | 2025 |
| Beyoglu Cafe Ltd | Hospitality | 2025 |
| Beyoutiful Body & Mind Limited | Health & social care | 2019 |
| BFG Global Consulting Limited | Professional & scientific | 2023 |
| Bianca DE Sousa Ltd | Extraterritorial | 2017 |
| Bibisha Accountancy Services Ltd | Professional & scientific | 2021 |
| Big Easy Touring Ltd | Administrative & support | 2023 |
| Big Love Wellbeing CIC | Education | 2026 |
| Big Shot Coffee Ltd | Hospitality | 2019 |
| Big Top PR Ltd. | Professional & scientific | 2014 |
| Biketrainwales Limited | Education | 2016 |
| Bilen Barbers Ltd | Other services | 2020 |
| Billie Grand Ltd | Manufacturing | 2021 |
| Billy-Frank Matcham Limited | Agriculture & fishing | 2022 |
| BIM Fire Engineering Ltd | Professional & scientific | 2024 |
| Bind Daily Ltd. | Wholesale & retail | 2025 |
| BIO Living Ltd | Manufacturing | 2025 |
| Biofocus DPI (Holdings) Ltd | Professional & scientific | 1996 |
| Birdie Macs Ltd | Hospitality | 2024 |
| Bislim Gjocaj Car Wash Ltd | Administrative & support | 2018 |
| Bizz Accountants & Tax Advisors Ltd | Professional & scientific | 2026 |
| Bizz Consulting Limited | Information & communication | 2024 |