| Brandthinktank Advisory Ltd | Professional & scientific | 2019 |
| Brandthinktank London Limited | Professional & scientific | 2007 |
| Breezeright Ltd | Energy | 2026 |
| Breibbor Limited | Professional & scientific | 2022 |
| BRG Truck Park Limited | Transport & logistics | 2022 |
| Bridge House SPV Limited | Real estate | 2018 |
| Brielle Limited | Real estate | 1985 |
| Brightwave Consulting Ltd | Professional & scientific | 2024 |
| Brik Consultancy Limited | Professional & scientific | 2023 |
| Britech Consultants Limited | Construction | 2000 |
| Britech Investments Limited | Construction | 2000 |
| Britind Foods Ltd | Wholesale & retail | 2021 |
| Brockwood Management Company Limited | Households | 1998 |
| Brody Scaffolding Services Limited | Construction | 2026 |
| Brombeck Residentials Limited | Real estate | 2022 |
| Broo Ltd | Hospitality | 2023 |
| Brook Road (Redhill) Management Limited | Administrative & support | 2007 |
| Broomfield Advisory Limited | Information & communication | 2025 |
| Brown MAN Vans Ltd | Transport & logistics | 2024 |
| Bruce Chapman Limited | Extraterritorial | 2024 |
| Brylane Baker Properties Limited | Construction | 2025 |
| Brylane Construction Limited | Construction | 2003 |
| Brymarts Garden & Grounds Ltd | Administrative & support | 2015 |
| Brymarts Landscapes Ltd | Administrative & support | 2006 |
| Btrooms Ltd | Health & social care | 2020 |
| Buchanan Spray Solutions Limited | Wholesale & retail | 2011 |
| Bump N Chic Ltd | Other services | 2014 |
| Burgess Gray Accountancy Limited | Financial services | 2015 |
| Burning Skies Limited | Information & communication | 2021 |
| Burrswood Estate Management Ltd | Households | 2024 |
| Busson Controls Limited | Manufacturing | 2016 |
| Butlers (Caterham) Limited | Wholesale & retail | 1994 |
| Butlers Spray Centre Limited | Construction | 2005 |
| Buxton Building Contractors Limited | Construction | 1988 |
| Byldbyte Ltd | Information & communication | 2024 |
| C & B by Sharlene Ltd | Wholesale & retail | 2022 |
| C B C T Trading Limited | Real estate | 2002 |
| C F Lawnmower Services Ltd | Manufacturing | 2021 |
| C Hammond Plastering Limited | Administrative & support | 2021 |
| C Lewis Property Ltd | Real estate | 2025 |
| C&A Studies Limited | Education | 2016 |
| C&S Business Solutions Ltd | Administrative & support | 2020 |
| C.A Gorman Company Ltd | Education | 2026 |
| C.C.B. (Stevenage) Limited | Construction | 1986 |
| C.J.H.Consultancy Services Probate & Trusts Limited | Professional & scientific | 2013 |
| C2 Hospitality Limited | Hospitality | 2025 |
| Caabe Edward Holdings Ltd | Financial services | 2022 |
| Cafezinho Coffees Ltd | Manufacturing | 2017 |
| Caleidoscope CIC | Education | 2019 |
| Callaway Group Ltd | Financial services | 2021 |
| Camada Investments Limited | Financial services | 2006 |
| Cambatek Limited | Information & communication | 2024 |
| Cambridge Business Development Limited | Extraterritorial | 2013 |
| Cambridge Heath Homes Limited | Construction | 2017 |
| Cameron Reeves Financial Planning Limited | Financial services | 2017 |
| Capital Lifts Ltd | Manufacturing | 2015 |
| Capital Mobility Ltd | Extraterritorial | 2021 |
| Capreal Limited | Professional & scientific | 2019 |
| Captain Heat Pump LLP | | 2024 |
| Car Recycling Ltd | Wholesale & retail | 2024 |
| Car Rental Bookers Limited | Administrative & support | 2005 |
| Carabelas Ltd | Professional & scientific | 2015 |
| Carasona Consulting Limited | Professional & scientific | 2017 |
| Carci Mining Consultants Ltd | Mining & quarrying | 2019 |
| Care Goddess Ltd | Health & social care | 2016 |
| Caring Eyes Ltd | Health & social care | 2022 |
| Carla's Classroom Ltd | Education | 2020 |
| Carter Land Projects Limited | Administrative & support | 2016 |
| Carter Nicholls Consultants Limited | Professional & scientific | 2003 |
| CAS Associates Limited | Administrative & support | 2002 |
| Casa Dextiles Ltd | Wholesale & retail | 2026 |
| CASA4YOU Limited | Real estate | 2019 |
| Castle Davis Limited | Professional & scientific | 2003 |
| Castle Physiotherapy Limited | Health & social care | 2003 |
| Castle View Brickwork Ltd | Construction | 2025 |
| Catalysis Capital Partners Limited | Financial services | 2004 |
| Caterbrook Limited | Households | 1973 |
| Caterham Barracks Community Trust | Other services | 1999 |
| Caterham Business Improvement Company Limited | Administrative & support | 2015 |
| Caterham Carpets Limited | Wholesale & retail | 2019 |
| Caterham Commercial Consulting Ltd | Professional & scientific | 2018 |
| Caterham Construction Services Limited | Construction | 2013 |
| Caterham Court (Residents) Limited | Households | 2011 |
| Caterham Craft Room Limited | Arts & recreation | 2025 |
| Caterham Digital Ltd | Transport & logistics | 2010 |
| Caterham Formal Wear Ltd | Wholesale & retail | 2018 |
| Caterham in Car Systems Limited | Wholesale & retail | 2009 |
| Caterham Kitchen Ltd | Hospitality | 2015 |
| Caterham Mini Market Limited | Wholesale & retail | 2014 |
| Caterham Restaurant Ltd | Hospitality | 2026 |
| Caterham School | Education | 2005 |
| Caterham School International Limited | Education | 2019 |
| Caterham Taxi Service Ltd | Transport & logistics | 2019 |
| Caterham Thai Limited | Hospitality | 2019 |
| Caterham Therapies Ltd | Health & social care | 2025 |
| Caterham Valley Parish Hall Company,Limited(The) | Education | 1913 |
| Caterham Worldwide Logistics Ltd | Transport & logistics | 2010 |
| Catherine Friar Production Limited | Administrative & support | 2015 |
| Catherine Savage Ltd | Information & communication | 2026 |
| Causbrook Roofing & Building Ltd | Construction | 2016 |