| Bujoreanu Construct Ltd | Construction | 2025 |
| Bull Shark Professional Services Ltd | Professional & scientific | 2022 |
| Bulleuk Ltd. | Administrative & support | 2006 |
| Bulleuk RFD Ltd | Wholesale & retail | 2023 |
| Bullseye Media Ltd | Information & communication | 2021 |
| Bumblelina Ltd | Hospitality | 2025 |
| Bumboo Limited | Wholesale & retail | 2024 |
| Bump of Joy Ltd | Wholesale & retail | 2024 |
| Buns & Bones Ltd | Hospitality | 2022 |
| Bunz and Slices Ltd | Hospitality | 2026 |
| Burgham-Wilson Limited | Professional & scientific | 2023 |
| Burhill Investments UK Limited | Construction | 2002 |
| Burns London (Holdings) Ltd | Manufacturing | 1991 |
| Burnt Common Close Residents Company Limited | Households | 1981 |
| Burnt Ochre Ltd | Construction | 2022 |
| Buro Construct Limited | Construction | 1991 |
| Burrowhill Management Limited | Extraterritorial | 2006 |
| Burton Aviation Consultancy Ltd | Professional & scientific | 2024 |
| Business Cleaning Contracts Ltd | Administrative & support | 2020 |
| Business Furniture Services (UK) Ltd | Transport & logistics | 2002 |
| Business Insight Analytics Limited | Information & communication | 2020 |
| Business Interior Solutions Limited | Construction | 1997 |
| Business Lending Secured Income Limited Partnership | | 2010 |
| Business Mark Holdings Limited | Construction | 2014 |
| Business Winning Systems Ltd | Information & communication | 1998 |
| Busy Weybridge & Woking Ltd | Other services | 2025 |
| Buthelezi Limited | Health & social care | 2011 |
| Butlers Accountants Ltd | Professional & scientific | 2022 |
| Buy Easy Shop Ltd | Wholesale & retail | 2020 |
| Buy Homes Direct Limited | Construction | 2005 |
| Buyabeam Limited | Wholesale & retail | 2019 |
| BUZ Solutions Ltd | Water & waste | 2018 |
| BVM Investment Company | Professional & scientific | 2011 |
| BW Future Limited | Financial services | 2017 |
| BW Notary Ltd | Professional & scientific | 2026 |
| BW Property Holdings Limited | Financial services | 2017 |
| Bwritr Brands Limited | Professional & scientific | 2019 |
| Bwturner Consulting Limited | Information & communication | 2023 |
| Byfleet Lawn Tennis Club Limited | Arts & recreation | 2019 |
| C & C Reservoirs Limited | Professional & scientific | 1995 |
| C & C Ripley Ltd | Extraterritorial | 2023 |
| C & P Building Services Limited | Construction | 2006 |
| C & S Transport Holdings Limited | Administrative & support | 2010 |
| C Digital Studio Ltd | Information & communication | 2014 |
| C E B &J Ltd | Other services | 2025 |
| C E Gardens Limited | Administrative & support | 2022 |
| C Hall Consulting Ltd | Professional & scientific | 2021 |
| C I Global Distribution Ltd | Professional & scientific | 2024 |
| C I Global Ltd | Professional & scientific | 2024 |
| C I Safe Ltd | Professional & scientific | 2024 |
| C I Safemap Ltd | Professional & scientific | 2024 |
| C I Sense Ltd | Professional & scientific | 2024 |
| C Lund Marketing Ltd | Professional & scientific | 2025 |
| C M Beckenham Limited | Households | 2003 |
| C.C.S. Financial Services Limited | Financial services | 1991 |
| C.C.S. Insurance Services Limited | Financial services | 1986 |
| C.E.S Engineering Services Limited | Wholesale & retail | 2024 |
| C.J. Burfield Services Limited | Construction | 1997 |
| C2 I.T. Limited | Information & communication | 2003 |
| C2 Networks Limited | Information & communication | 1998 |
| C64 Clinics Ltd | Health & social care | 2020 |
| CA Technical Advancements Ltd | Information & communication | 2023 |
| Caballo Living UK Co Ltd | Administrative & support | 2022 |
| Cable Realisations Limited | Manufacturing | 1996 |
| Cacile Healthcare Limited | Health & social care | 2017 |
| Cadogan Limited | Information & communication | 2023 |
| Cafetreatz Woking Ltd | Hospitality | 2014 |
| Cake Inn Woking Ltd | Wholesale & retail | 2022 |
| Call a GP Ltd | Health & social care | 2013 |
| Calypso Sephora Limited | Manufacturing | 2015 |
| Camberley Property Services Ltd | Real estate | 2019 |
| Camellia Homes Ltd | Real estate | 2025 |
| Cameron Care Services Limited | Professional & scientific | 2022 |
| Cameron Lewis Holdings Limited | Administrative & support | 2024 |
| Cameron Lodge Limited | Health & social care | 1996 |
| Cameron Property Consulting Limited | Real estate | 2013 |
| Cameronprime Ltd | Administrative & support | 2024 |
| Campbell's Heritage Clothing Ltd | Wholesale & retail | 2019 |
| Canada Coachworks Limited | Real estate | 2009 |
| Canada Water Studios Limited | Education | 2013 |
| Canadian Pavilion at Bisley Limited | Hospitality | 2003 |
| Canalside Apartments Freehold Ltd | Households | 2025 |
| Canalside Community Fridge CIC | Water & waste | 2022 |
| Cancer Testing Services CIC | Health & social care | 2025 |
| Canimi Group Limited | Information & communication | 2006 |
| Canis Ford Limited | Information & communication | 2014 |
| Canopy Cloud Ltd | Information & communication | 2024 |
| CAP Landscapes Ltd | Construction | 2020 |
| Capgen Consultancy Limited | Other services | 2018 |
| Capital Bridge Partners Limited | Administrative & support | 2025 |
| Capital Consultants Limited | Professional & scientific | 2022 |
| Capital Freeholds Limited | Extraterritorial | 1973 |
| Capital Roofing and Property Care Limited | Construction | 2019 |
| Capricos Ventures Limited | Construction | 2018 |
| Caps Upholstery Limited | Other services | 2018 |
| Captain Property Solutions Limited | Professional & scientific | 2012 |
| Capttopt Ltd | Health & social care | 2021 |
| Car Vita Ltd | Wholesale & retail | 2026 |
| Caraffi Ltd | Professional & scientific | 2019 |
| Carbon Saving Consultancy Services Ltd | Administrative & support | 2008 |