| Building Reinstatement Valuation Services Ltd | Financial services | 2022 |
| Burns Asset Management Limited | Real estate | 2015 |
| Burntwood Drive (Oxted) Management Company Limited | Households | 2013 |
| Business and Technical Communications Limited | Information & communication | 1993 |
| Business Growth Team Ltd | Professional & scientific | 2019 |
| Business Launch Team Ltd | Households | 2006 |
| Busy Bees Kids Club Limited | Education | 2003 |
| Busy Bees Properties Limited | Real estate | 2024 |
| Butler & Young Services Limited | Professional & scientific | 1989 |
| Buy by Renting PLC | Information & communication | 2017 |
| Bxndos Ltd | Wholesale & retail | 2023 |
| C & D Financial & Insurance Services Limited | Financial services | 2003 |
| C.A.B Construction Consultancy Limited | Construction | 2023 |
| C.E.S. Properties Ltd | Real estate | 1995 |
| C.I.G Alpha Limited | Real estate | 2018 |
| C.I.G Consultants Limited | Information & communication | 2014 |
| C.M. Golds Group Limited | Wholesale & retail | 2023 |
| CAB Rentals Ltd | Administrative & support | 2015 |
| Cableflor Limited | Administrative & support | 2010 |
| Cadence Accelerate Limited | Professional & scientific | 2025 |
| Cadence Accounting Limited | Professional & scientific | 2018 |
| Cadence Content Limited | Financial services | 2025 |
| Cafrejosan Ltd | Other services | 2013 |
| CAH Property Limited | Real estate | 2018 |
| Cain Dwyer Limited | Administrative & support | 2014 |
| Callum Wand Estates Limited | Real estate | 2021 |
| Campbell Ceilings and Partitions Ltd | Professional & scientific | 2009 |
| Campbell Gillies Limited | Professional & scientific | 2018 |
| Campton Insurance Brokers (U.K.) Limited | Financial services | 1974 |
| Campton Underwriting Agents Limited | Financial services | 1964 |
| Capital Growth Transaction Limited | Wholesale & retail | 2023 |
| Capital Remit Limited | Professional & scientific | 2019 |
| Card Crazy City Ltd | Professional & scientific | 2011 |
| Carena Mechanical Services Limited | Construction | 1980 |
| Cargo Management & Logistics Holdings Limited | Professional & scientific | 2010 |
| Cargo Management & Logistics Limited | Transport & logistics | 1994 |
| Carps EYE Ltd | Agriculture & fishing | 2022 |
| Casley Consulting Limited | Professional & scientific | 2018 |
| Caterham Bridge Club Ltd | Arts & recreation | 2019 |
| Caxton House Management Co. (Limpsfield) Limited | Real estate | 1977 |
| Cedar West Limited | Administrative & support | 2025 |
| CH Consulting Limited | Information & communication | 2002 |
| Chaffinch Estate Limited | Financial services | 2025 |
| Charles Properties Limited | Real estate | 1997 |
| Charles Safapour Ltd | Real estate | 2015 |
| Charman Gardening Ltd | Administrative & support | 2013 |
| Chartfords Trees Limited | Agriculture & fishing | 2014 |
| Chartway Enterprises Ltd | Information & communication | 2000 |
| Cheal Consulting Limited | Professional & scientific | 2018 |
| Cherry Way Limited | Real estate | 2009 |
| Chestnut Court Oxted Maintenance Ltd | Households | 2015 |
| CHI a Brenn Ltd | Hospitality | 2024 |
| Chill OUT. UK Limited | Professional & scientific | 2000 |
| Chilmead Developments Limited | Real estate | 2023 |
| Chilmead Properties Limited | Real estate | 2007 |
| Chilmead Securities Limited | Real estate | 2012 |
| China Garden (Surrey) Ltd | Hospitality | 2024 |
| Chococo Retail Ltd | Hospitality | 2024 |
| Chococo Wholesale Ltd | Manufacturing | 2024 |
| CHS and SS Limited | Wholesale & retail | 2015 |
| Church Lane (Oxted) Management Company Limited | Households | 2004 |
| Churchill Gardens (Oxted) Management Company Limited | Real estate | 2013 |
| Churchill Options Ltd | Wholesale & retail | 2006 |
| City Consorts Limited | Other services | 2022 |
| Civic Solutions Ltd | Professional & scientific | 2025 |
| CLA Social Care Consultancy Limited | Health & social care | 2010 |
| Clandon Court Residents Association Limited | Hospitality | 1994 |
| Clarewood Investments Limited | Other services | 2025 |
| Clarham Homes Ltd | Construction | 2019 |
| Clarity From Noise Ltd | Information & communication | 2026 |
| Clarke Butterfield Architects Ltd | Professional & scientific | 2018 |
| Class ACT (GB) Limited | Education | 2003 |
| Clearmint Consulting Limited | Information & communication | 2010 |
| Climate Compass Ltd | Professional & scientific | 2024 |
| Cloud Digest Ltd | Professional & scientific | 2022 |
| CM Growth Partners Ltd | Information & communication | 2025 |
| CMR Cricket Limited | Arts & recreation | 2022 |
| Cobham Capital Limited | Wholesale & retail | 2004 |
| Code Blue CPR Limited | Health & social care | 2023 |
| Coffee and Friends Ltd | Hospitality | 2024 |
| Cognition Clean Energy Limited | Professional & scientific | 2023 |
| Cognition Hyper Energy Ltd | Professional & scientific | 2024 |
| Cognition Land and Water Trustee Limited | Extraterritorial | 2021 |
| Colairo's LLP | | 2011 |
| Colden Aviation Limited | Other services | 2016 |
| Collatus Limited | Other services | 2025 |
| Collota Ltd | Wholesale & retail | 2022 |
| Coltsford Mill Trout Club Limited | Agriculture & fishing | 1999 |
| Comcheck Systems Limited | Information & communication | 1991 |
| Complete Engineering Systems Limited | Professional & scientific | 1994 |
| Coniak Limited | Professional & scientific | 2004 |
| Connectix Global Partners Ltd | Professional & scientific | 2019 |
| Construction Robotics Limited | Manufacturing | 1992 |
| Contessa Trading Ltd | Hospitality | 2013 |
| Conway-Ellis Consultants Limited | Professional & scientific | 2022 |
| Coogarth Limited | Real estate | 1962 |
| Cook Investments Limited | Real estate | 2023 |
| Cool AID Events Ltd | Administrative & support | 2023 |
| Coolerking Resources Limited | Administrative & support | 2005 |
| Costa Maintenance Limited | Households | 2014 |