| Britains Limited | Construction | 2003 |
| Britannia Powder & Plastic Coatings Ltd | Wholesale & retail | 2005 |
| Britannia Refined Metals Limited | Manufacturing | 1930 |
| Britannia Refined Metals Retirement Plan Limited | Professional & scientific | 1937 |
| Briteminds Ltd | Information & communication | 2006 |
| British Aquacare Ltd | Agriculture & fishing | 2025 |
| British Moulding Machine Company Limited(The) | Manufacturing | 1932 |
| Britmol Ltd | Professional & scientific | 2012 |
| Broadbiz Web Services Ltd | Information & communication | 2005 |
| Broadfield House Investment Co Ltd | Financial services | 2026 |
| Broadstairs Leisure Limited | Extraterritorial | 2006 |
| Broadstairs Motor Company Limited | Professional & scientific | 2003 |
| Broadwater House Management Limited | Households | 2005 |
| Broadway Butchers Ltd | Wholesale & retail | 2006 |
| Broadway Express Maidstone Ltd | Wholesale & retail | 2013 |
| Broadway Garage (Herne Bay) Limited | Wholesale & retail | 1973 |
| Broadway Repairs Limited | Administrative & support | 2003 |
| Bromley 'Y' | Health & social care | 1984 |
| Bromley Bowling Club,Limited(The) | Arts & recreation | 1923 |
| Bromley Brush Company (Kent) Limited(The) | Manufacturing | 1961 |
| Bromley Christian Centre | Other services | 2007 |
| Bromley Demolition Company Limited | Construction | 1961 |
| Bromley Food Centre Ltd | Wholesale & retail | 2019 |
| Bromley Indoor Bowls Centre Limited | Arts & recreation | 1996 |
| Brook Engineers Limited | Construction | 2006 |
| Brook Lane Community Church | Other services | 2008 |
| Brookcard Limited | Real estate | 2001 |
| Brooke Farms(Sussex)Limited | | 1956 |
| Brookerpaks Limited | Wholesale & retail | 2002 |
| Brownhill Consulting Ltd | Wholesale & retail | 2001 |
| Browsing 4 Housing Limited | Real estate | 2006 |
| BRR Electrical and Building Services Ltd | Construction | 2025 |
| Bubbles Publishing Limited | Wholesale & retail | 2006 |
| Buckhurst Properties Limited | Real estate | 1998 |
| Buckland Architects Ltd. | Construction | 2012 |
| Buckland Sports Limited | Information & communication | 2004 |
| Buckland Steadman & Roberts | | 1995 |
| Buddha Jewellery Ltd | Wholesale & retail | 2024 |
| Budget Autos Limited | Wholesale & retail | 2005 |
| Budo Marketing Limited | Administrative & support | 2017 |
| Bufford Property Company Limited | Construction | 2001 |
| Bugzee Limited | Information & communication | 2023 |
| Bugzilla Limited | Real estate | 2019 |
| Buhart Properties Limited | Real estate | 1977 |
| Build Consults Ltd | Professional & scientific | 2007 |
| Build IT Supplies Limited | Transport & logistics | 1998 |
| Bukola's Homes & Hospitality Ltd | Administrative & support | 2025 |
| Burdett Engineering Limited | | 1985 |
| Burnbright Fuels Limited | Transport & logistics | 1979 |
| Bush Building Contractors Limited | Construction | 2003 |
| Business Communications Consultants Limited | Professional & scientific | 1993 |
| Business Computer Solutions Ltd | Information & communication | 1996 |
| Business Fusion Limited | Administrative & support | 2005 |
| Business Tax Accountants Limited | Professional & scientific | 1994 |
| Busy B'S Limited | Wholesale & retail | 1972 |
| Buttercups at Little Teddies Limited | Education | 2007 |
| Butterworths (Regia) Limited | Manufacturing | 1959 |
| Buyzone Enterprises Ltd | Wholesale & retail | 2025 |
| Buzztek Garage Services Ltd | Professional & scientific | 2010 |
| BWE International Limited | Professional & scientific | 1994 |
| BWE Limited | Manufacturing | 1988 |
| BY OYE Limited | Wholesale & retail | 2022 |
| Byblossom Wedding Stationery Ltd | Professional & scientific | 2017 |
| C & a W Engineering Limited | Construction | 2002 |
| C & G Painters & Decorators Ltd | Construction | 2003 |
| C a + P E Limited | Information & communication | 2002 |
| C H Management Consultants Ltd | Real estate | 1996 |
| C I (Holdings) Limited | Wholesale & retail | 1998 |
| C P Carroll & Associates Limited | Construction | 2003 |
| C. H. Hodges Limited | Wholesale & retail | 2004 |
| C. P. Berry Limited | Professional & scientific | 2004 |
| C.A. Moreton Limited | Construction | 2004 |
| C.C. Fire Engineering Limited | | 1988 |
| C.E.S (Kent) Ltd | Wholesale & retail | 2006 |
| C.F. Doyle Limited | Manufacturing | 1988 |
| C.G.B. Construction Limited | Construction | 2003 |
| C.I.S. (London) Limited | Manufacturing | 1998 |
| C.P.A. Engineering Limited | Manufacturing | 1980 |
| C.T. Jackson Limited | Construction | 1973 |
| Cab-It (Sittingbourne) Limited | Transport & logistics | 2006 |
| CAD Surveys Limited | Professional & scientific | 2003 |
| Cadety Limited | Information & communication | 2016 |
| Cadiscourt Limited | | 1979 |
| Cadu Gomes Design Ltd | Administrative & support | 2017 |
| CAF Bank Limited | Financial services | 1984 |
| CAF Global Trustees | Professional & scientific | 2005 |
| Cafe DES Amis DU Mexique Limited | Hospitality | 1997 |
| Cafe Solo Limited | Hospitality | 2002 |
| CAJ QS Limited | Administrative & support | 2005 |
| Cala Estates Ltd | Real estate | 2023 |
| Calderstone Investments Limited | Administrative & support | 2001 |
| Caliber Tyres Europe Limited | Administrative & support | 1999 |
| Caltech Engineering & Mouldings Ltd. | Manufacturing | 1986 |
| Calv & Sons Mini Market Ltd | Wholesale & retail | 2023 |
| Cambourne Engineering Limited | Manufacturing | 2001 |
| Cambridge Trust Co. Ltd | Professional & scientific | 2023 |
| Camilla Consulting Limited | Professional & scientific | 1996 |
| Camilo Ichor Limited | Health & social care | 2010 |
| Camlyn Construction Ltd | Construction | 2022 |
| Campbell's College Limited | Education | 1994 |