| BG Mobile Mechanic Ltd | Wholesale & retail | 2025 |
| BHP Sealants Limited | Professional & scientific | 2012 |
| Big HAT Bushcamp Limited | Education | 2012 |
| Big Picture TV Ltd | Information & communication | 2016 |
| Big Yellow (Battersea) Limited | Real estate | 2014 |
| Big Yellow (Wapping 2) Limited | Administrative & support | 2020 |
| Big Yellow Group PLC | Professional & scientific | 1998 |
| Big Yellow Limited Partnership | | 2007 |
| Big Yellow Nominee NO. 1 Limited | Financial services | 2007 |
| Big Yellow Nominee NO.2 Limited | Financial services | 2007 |
| Big Yellow Self Storage Company 2 Limited | Financial services | 2003 |
| Big Yellow Self Storage Company 3 Limited | Financial services | 2003 |
| Big Yellow Self Storage Company a Limited | Real estate | 2012 |
| Big Yellow Self Storage Company M Limited | Real estate | 2013 |
| Billay DA Dera Limited | Hospitality | 2024 |
| Billett Installs Ltd | Construction | 2024 |
| Blackfriars Securities (Brighton) Limited | Real estate | 2000 |
| Blue Cedar Leisure Ltd | Education | 2017 |
| Bluespark Europe Ltd. | Real estate | 2015 |
| Blurox Wellness Limited | Other services | 2026 |
| Boho BUS Booth & Events Ltd | Professional & scientific | 2025 |
| Bourne Valley Garden Centre Ltd | Wholesale & retail | 1996 |
| Brain Thunder Enterprises Ltd | Information & communication | 2016 |
| Branch Management Tree Services Ltd | Other services | 2022 |
| Breccia Solutions Ltd | Information & communication | 2017 |
| Bridge Ranger Limited | Administrative & support | 2006 |
| Broadwood House Management (Sunningdale) Limited | Households | 2007 |
| Build IT London Limited | Construction | 2016 |
| Build Your Planet Ltd | Professional & scientific | 2021 |
| Bureau Labs Ltd | Information & communication | 2024 |
| Butler Road Bagshot Residents Company Limited | Households | 1995 |
| Butlers Walsall Middlesbrough Limited | Construction | 2019 |
| Butlers Walsall Sunderland Limited | Construction | 2017 |
| Butterflies Nursery School Ltd | Education | 2008 |
| BWB Marketing Ltd | Professional & scientific | 2008 |
| Byrco Limited | Financial services | 2005 |
| Byssco a Limited | Financial services | 2012 |
| Byssco Limited | Financial services | 1988 |
| C B Design Group Limited | Professional & scientific | 2021 |
| C D Fitness Limited | Arts & recreation | 2011 |
| C F Investments Limited | Real estate | 2004 |
| Caffe Amore Limited | Hospitality | 2011 |
| Camberley BL Ltd | Other services | 2025 |
| Camberley Chiropractic Clinic Limited | Health & social care | 2003 |
| Camberley Landscaping Limited | Administrative & support | 2023 |
| Candid Build Ltd | Real estate | 2022 |
| Candid Developments Ltd | Construction | 2017 |
| Cargosave Consultants Limited | Administrative & support | 2019 |
| Caring Professional Solutions Limited | Health & social care | 2015 |
| Cartbridge and Grove Court (Management) Limited | Real estate | 2006 |
| Catriona Cairns Limited | Real estate | 2022 |
| CB Building Co Limited | Construction | 2026 |
| Ccoman Ltd | Transport & logistics | 2024 |
| Central Car Spa Ltd | Other services | 2025 |
| Ceroc Surrey Social Dancing Ltd | Education | 2022 |
| Chasetree Limited | Real estate | 1973 |
| Chatterton Rees Limited | Real estate | 2016 |
| Chez Liberty Ltd | Real estate | 2022 |
| Chins UP Limited | Real estate | 2013 |
| Christmas Avenue Access Road Ltd | Real estate | 2026 |
| Chudleigh Court RTM Company Limited | Households | 2012 |
| Civil Engineering Surveys (UK) Ltd | Professional & scientific | 2017 |
| Cladding and Sign Systems Limited | Professional & scientific | 2012 |
| Classic Cooking Ltd | Hospitality | 2020 |
| Clifford Installations Limited | Other services | 2018 |
| Clockwork Tours Ltd | Administrative & support | 2023 |
| Cobras Basketball Club Limited | Arts & recreation | 2016 |
| Commercial and Legal Department Limited | Professional & scientific | 2014 |
| Compare Car Finance Ltd | Financial services | 2023 |
| Compare the Mandap Ltd | Other services | 2011 |
| Compass Marine and Offshore Ltd | Professional & scientific | 2019 |
| Complete Academy Limited | Education | 2015 |
| Complete Coaching Associates Limited | Education | 2013 |
| Comzyme Limited | Information & communication | 2010 |
| Connaught (London) Limited | Real estate | 2013 |
| Connaught Care (Bedhampton) Limited | Health & social care | 2021 |
| Connaught Care (Felpham) Holdings Limited | Financial services | 2025 |
| Connaught Care (Felpham) Limited | Health & social care | 2025 |
| Connaught Care (Felpham) Parent Limited | Financial services | 2025 |
| Connaught Care (Hedge END) Holdings Limited | Financial services | 2026 |
| Connaught Care (Hedge END) Limited | Health & social care | 2026 |
| Connaught Care Bedhampton Group Limited | Financial services | 2023 |
| Conto Royale Limited | Information & communication | 2014 |
| Cooper Baillie Limited | Professional & scientific | 2014 |
| Cooper Capital Group Ltd | Financial services | 2026 |
| Copy Copy Final Ltd | Information & communication | 2017 |
| Core Kids Club Ltd | Education | 2022 |
| CPL Renovations Ltd | Construction | 2026 |
| Crafty Pauls Limited | Wholesale & retail | 2022 |
| Cravat Club Ltd | Wholesale & retail | 2014 |
| Crave Media Limited | Information & communication | 2017 |
| Create and Construct UK Limited | Construction | 2016 |
| Cromwell (2003) Limited | Professional & scientific | 2004 |
| Cromwell (Egham) Limited | Real estate | 1999 |
| Cromwell (Wandsworth) Limited | Real estate | 1997 |
| Cromwell Holdings Limited | Professional & scientific | 1983 |
| Cromwell Investments (Richmond) Limited | Real estate | 1963 |
| Cromwell Investments Limited | Professional & scientific | 1965 |
| Crossborder Immigration Solutions Ltd | Professional & scientific | 2025 |
| Cubbit Antiques Limited | Wholesale & retail | 2013 |