| Awesome Wonder Limited | Construction | 2015 |
| A’S Prpty Ltd | Real estate | 2025 |
| B Sahdra Building Services Limited | Construction | 2005 |
| B.R.K Renovations Limited | Construction | 2023 |
| B2B Duplication Limited | Manufacturing | 2014 |
| Baby World Ltd | Health & social care | 2024 |
| Bachten Groundworks Ltd | Construction | 2019 |
| Badesha Ltd | Real estate | 2021 |
| Baileys Boiler and Heating Services Limited | Construction | 2022 |
| Balmoral Court (Belvedere) RTM Company Ltd | Households | 2024 |
| Balvinder Kumar Ltd | Construction | 2026 |
| Barney Bund Ltd | Manufacturing | 2023 |
| Baron Fresh Limited | Hospitality | 2023 |
| Beauty Lounge ADH Ltd | Other services | 2026 |
| Bell Rental Limited | Households | 2022 |
| Belle Belle Properties Limited | Real estate | 2025 |
| Bells Mechanical&Electrical Services Ltd | Professional & scientific | 2014 |
| Bells MES Limited | Construction | 1960 |
| Bells Power Control Systems Ltd | Professional & scientific | 2020 |
| Bells Power Environmental Ltd | Professional & scientific | 1967 |
| Bells Power Group Limited | Administrative & support | 1977 |
| Bells Power Rental Limited | Extraterritorial | 2016 |
| Bells Power Services Ltd | Professional & scientific | 2005 |
| Bells Power Solutions Ltd | Professional & scientific | 1905 |
| Belvedere Barbers Ltd | Other services | 2023 |
| Belvedere Beloved Ltd | Manufacturing | 2021 |
| Belvedere Furnitures Limited | Wholesale & retail | 2016 |
| Belvedere Healthcare Ltd | Health & social care | 2022 |
| Belvedere Spice Ltd | Hospitality | 2025 |
| Belvedere Tandoori Ltd | Hospitality | 2017 |
| Belvedere Tandoori Restaurant Ltd | Hospitality | 2025 |
| Bespoke Business Systems Ltd | Information & communication | 2026 |
| Best Dentists Ltd | Health & social care | 2015 |
| Bexley BIN Cleaners Limited | Administrative & support | 2025 |
| Bexley Plastering & Construction Limited | Construction | 2026 |
| Bexley Provision Football Academy Ltd | Arts & recreation | 2025 |
| Bexley Provision Football Club Ltd | Arts & recreation | 2025 |
| BG Services London Limited | Professional & scientific | 2020 |
| Bhuiyan Corporation Limited | Real estate | 2024 |
| Bics Development Ltd | Construction | 2018 |
| Biffa Care Services Limited | Public administration | 2025 |
| Big Boss Gardening Ltd | Other services | 2023 |
| Big JOE Barber's Shop Ltd | Other services | 2019 |
| Bigc Valets Ltd | Administrative & support | 2026 |
| Bigdaddyskitchen Ltd | Hospitality | 2020 |
| BIM Excel Limited | Professional & scientific | 2017 |
| Binder Commissioning Services Ltd | Construction | 2020 |
| Bindra Assets Ltd | Real estate | 2020 |
| Bindra Brickwork Ltd | Construction | 2014 |
| Bindra New Homes Ltd | Construction | 2025 |
| Bizzell Paper Company Limited | Wholesale & retail | 1983 |
| Black and Gold Services Ltd | Other services | 2022 |
| Black Star Estates Ltd | Real estate | 2025 |
| Blackpound Ltd | Administrative & support | 2025 |
| Blanc Technologies Ltd | Information & communication | 2026 |
| Bliinter Ltd | Professional & scientific | 2022 |
| Blue Sky SSP Ltd | Construction | 2020 |
| Blueprint Projects Ltd | Construction | 2021 |
| BLW UK Zone 1 Limited | Health & social care | 2015 |
| BLW UKZ1 Cell Ministry Ltd | Administrative & support | 2022 |
| Blyss UK Limited | Health & social care | 2021 |
| Bonafide Developments Ltd | Real estate | 2019 |
| Bonsu Services Limited | Other services | 2025 |
| Bowens Sales Ltd | Wholesale & retail | 2026 |
| Brands for Fashion Limited | Wholesale & retail | 2018 |
| Braniff Innovations Ltd | Manufacturing | 2024 |
| Britesoft Ltd | Information & communication | 2013 |
| Broad Leaf Property Investments Ltd | Real estate | 2021 |
| Bronze N Beauty Ltd | Other services | 2017 |
| Bruce Mclaren Racing Limited | Arts & recreation | 2017 |
| BU Driline Limited | Construction | 2019 |
| Bukdel Ltd | Administrative & support | 2018 |
| BURGERVAN78 Ltd | Hospitality | 2025 |
| Buzzerman Tiling Ltd | Construction | 2024 |
| C & T Cleaning Services Ltd | Administrative & support | 2024 |
| C J Hair Limited | Other services | 2019 |
| C M Morars Limited | Professional & scientific | 2003 |
| C&R Groupe Ltd | Transport & logistics | 2018 |
| C. Batten Carpentry & Joinery Ltd | Manufacturing | 2024 |
| C.E. Gibson Stone Cleaning Ltd | Construction | 2013 |
| Caan Property Ltd | Real estate | 2026 |
| CAD Excel Ltd | Professional & scientific | 2007 |
| Calmmindbliss Psychotherapies Ltd | Health & social care | 2024 |
| Cannon Ventilation Services Ltd | Construction | 2025 |
| Capitol Maintenance Limited | Construction | 2004 |
| Capitol Properties Limited | Real estate | 1986 |
| Carcar Style Ltd | Wholesale & retail | 2011 |
| Carevera Ltd | Health & social care | 2026 |
| Cartesian Effect Ltd | Professional & scientific | 2025 |
| Casa Building Services Ltd | Construction | 2019 |
| Casey & Cole Ltd | Wholesale & retail | 2023 |
| Cataleya Luci Ltd | Construction | 2023 |
| Ceenel & Associates Ltd | Real estate | 2020 |
| Cenini Holdings Limited | Health & social care | 2022 |
| CG Estate 203 Limited | Real estate | 2016 |
| Chahal Property Services Limited | Real estate | 2025 |
| Champions F C Ltd | Education | 2022 |
| Charimore Limited | Health & social care | 2008 |
| Charis Konsulting Ltd | Information & communication | 2015 |
| Charis Recruitment Ltd | Administrative & support | 2025 |