| Broadway Roofing Ltd | Construction | 2025 |
| Broadway Tyre Trading Co., Ltd | Manufacturing | 2022 |
| Brompton Boilers Ltd | Construction | 2024 |
| Brompton Stores Limited | Wholesale & retail | 2012 |
| Brooksfx Limited | Financial services | 2016 |
| Brother Construction Machinery Co., Ltd | Wholesale & retail | 2021 |
| Bsbtraffic Ltd | Construction | 2024 |
| BTF Medcom Limited | Health & social care | 2013 |
| Btone International Limited | Manufacturing | 2022 |
| Bublshop Limited | Wholesale & retail | 2013 |
| Buckhorn Weston CC Ltd | Arts & recreation | 2004 |
| Bufag Care Ltd | Health & social care | 2022 |
| Builders & Maintenance on Budget Ltd | Construction | 2022 |
| Buildgram Ltd | Construction | 2024 |
| Building and Decoration Limited | Construction | 2023 |
| Building Better Construction Specialists Ltd | Construction | 2026 |
| Building Better Enterprises Ltd | Construction | 2017 |
| Building Needs Limited | Construction | 2012 |
| Bukhari Solutions Ltd | Wholesale & retail | 2025 |
| Bukliz Limited | Real estate | 2016 |
| Bukué Ltd | Manufacturing | 2025 |
| Bulgarians in Kent CIC | Health & social care | 2024 |
| Bulldog Home Improvements (UK) Limited | Construction | 2009 |
| Bullgrad Limited | Transport & logistics | 2024 |
| Bumet Ltd | Transport & logistics | 2017 |
| Bunmi Kuforiji Limited | Health & social care | 2021 |
| Bunmibaloo Limited | Construction | 2024 |
| Burkett Investments Limited | Financial services | 2013 |
| Burley Decorators Limited | Construction | 2008 |
| Burnside Property Management Ltd | Households | 2014 |
| Business Utility Overhaul Ltd | Wholesale & retail | 2024 |
| Busy Bodies With Jess Ltd | Arts & recreation | 2025 |
| Butler Carpets and Flooring Limited | Wholesale & retail | 2024 |
| Butt HAW Close Management Limited | Households | 1988 |
| Buyer Industrial Group Ltd | Professional & scientific | 2018 |
| BW Global Limited | Financial services | 2020 |
| BW Windows Ltd | Construction | 2022 |
| Bytebazaar Ltd | Wholesale & retail | 2025 |
| Bytesmark Limited | Wholesale & retail | 2025 |
| Bztg Ltd | Professional & scientific | 2016 |
| C & C Mitres Limited | Manufacturing | 2002 |
| C & E Flooring Ltd | Construction | 2020 |
| C & J Carpentry Limited | Construction | 2021 |
| C & R Meadows Limited | Households | 2022 |
| C & S Interior Fit Outs Ltd | Construction | 2019 |
| C H Construction Services (S.E.) Ltd | Construction | 2003 |
| C Harrisson Ltd | Arts & recreation | 2018 |
| C Harvey Business Services Ltd | Professional & scientific | 2020 |
| C J Cooling & Refrigeration Ltd | Construction | 2023 |
| C J M Accounts Limited | Professional & scientific | 2015 |
| C L Roadmarkings Limited | Construction | 2002 |
| C P Carpentry Contractors Limited | Construction | 2004 |
| C Wheeler Ltd | Other services | 2017 |
| C Williams Project Management Limited | Construction | 2013 |
| C& E Wideway International Co., Ltd. | Extraterritorial | 2016 |
| C& L Marine Parts Ltd | Wholesale & retail | 2020 |
| C&A Facade Limited | Construction | 2014 |
| C&A Water Ltd | Construction | 2026 |
| C&L Accounting Ltd | Professional & scientific | 2017 |
| C&L Holdings Kent Ltd | Financial services | 2023 |
| C&S Enterprises Ltd | Real estate | 2023 |
| C. M. Fisheries Ltd | Agriculture & fishing | 2009 |
| C.A.K. Productions Ltd | Information & communication | 2024 |
| C.B. Wright & Associates Limited | Professional & scientific | 2010 |
| C.F.Marine Ltd | Manufacturing | 2022 |
| C.O.F Holdings Ltd | Wholesale & retail | 2021 |
| C.R.Pipers Ltd | Professional & scientific | 2018 |
| C.T.M Furniture Ltd | Manufacturing | 2024 |
| C.W. Fire Protection Services Limited | Public administration | 2000 |
| Cabaret Rouge Limited | Arts & recreation | 2012 |
| Cablewise Limited | Construction | 2023 |
| CAE Transport Ltd | Transport & logistics | 2026 |
| Cafe Bueno Limited | Administrative & support | 2017 |
| Cafe Nucleus Rainham Limited | Hospitality | 2021 |
| Cafe Route Ltd | Manufacturing | 2017 |
| Cafel Solutions Ltd | Wholesale & retail | 2024 |
| CAH Electrical Services Limited | Construction | 2019 |
| Calben Carpentry Ltd | Construction | 2021 |
| Calidris Birding Tours Ltd | Professional & scientific | 2019 |
| Callaway Kitchens Ltd | Manufacturing | 2012 |
| Calming Light Ltd | Health & social care | 2023 |
| Calpark Estates Limited | Construction | 2022 |
| CAM Cottages Management Company Limited | Households | 2006 |
| CAM Highway Services Ltd | Construction | 2018 |
| Camel Productions Limited | Arts & recreation | 1989 |
| Camelot Accounting Ltd | Professional & scientific | 2018 |
| Camelot Builders Limited | Construction | 2002 |
| Camelot Photographic Limited | Professional & scientific | 2010 |
| Cameroonians in the UK CIC | Hospitality | 2024 |
| Camino DE Ronda Properties (Management) Limited | Real estate | 1986 |
| Camino DE Ronda Properties (Ownership) Limited | Real estate | 1986 |
| Campbell Independent Social Work Ltd | Health & social care | 2026 |
| Campfire Wild Adventures Ltd | Education | 2019 |
| CAN Accounting & Tax Ltd | Professional & scientific | 2022 |
| Cangnan Taiyon Gifts and Crafts Co., Ltd | Professional & scientific | 2018 |
| Canterbury Plastics Limited | Wholesale & retail | 2006 |
| Canvapik Ltd | Wholesale & retail | 2021 |
| Caoxian Ruiyuan Home Furnishings Co., Ltd. | Manufacturing | 2023 |
| Capacita Talent Development Ltd | Education | 2025 |
| Carbon Capture Campus Ltd | Construction | 2022 |