| Cornerways Property Ltd | Households | 2002 |
| Corporate Festival Company Limited | Extraterritorial | 2023 |
| Corporate Image International Limited | Professional & scientific | 2015 |
| Correia Interior Design Studio Limited | Administrative & support | 2014 |
| Corrigan Gore Country Limited | Professional & scientific | 2025 |
| Corrigan Gore Limited | Professional & scientific | 2021 |
| Corrigan Gore Property Limited | Professional & scientific | 2023 |
| Corsica Street Properties Limited | Real estate | 2024 |
| Cotient Limited | Wholesale & retail | 2014 |
| Cottoned on Ltd | Manufacturing | 2010 |
| Count Keepers Ltd | Professional & scientific | 2020 |
| Countess Goda Estates Limited | Real estate | 2014 |
| Country Courtyard Developments Limited | Construction | 2014 |
| County Holdings LLP | | 2015 |
| Courier Cars (London) Limited | Transport & logistics | 2007 |
| Coworth Homes Limited | Construction | 2015 |
| Coxbridge Estates Limited | Real estate | 2017 |
| CPC Developments Limited | Construction | 2015 |
| CPY Consulting Ltd | Professional & scientific | 2022 |
| Craft Property Investments Limited | Real estate | 2019 |
| Craig Tilly (Search) Limited | Administrative & support | 2006 |
| Cranbourne Consultants Ltd | Professional & scientific | 2020 |
| Cranleigh Chamber of Commerce | Transport & logistics | 2018 |
| Cranq Cycles Limited | Other services | 2021 |
| Crawley Road Rental Limited | Real estate | 2020 |
| Create Development Limited | Information & communication | 2008 |
| Creative Connections Recruitment Ltd | Administrative & support | 2024 |
| Creators Image Limited | Professional & scientific | 2008 |
| Cremarc Limited | Professional & scientific | 2001 |
| Crepconnect Limited | Wholesale & retail | 2025 |
| Crestavera Limited | Wholesale & retail | 2025 |
| Creste Club Limited | Arts & recreation | 2019 |
| Cristabella Properties Limited | Real estate | 2021 |
| Criticaleye (Europe) Limited | Professional & scientific | 2002 |
| Criticaleye Investments PLC | Administrative & support | 2014 |
| Crmb Ltd | Wholesale & retail | 2020 |
| Croft Court Residents Association (Molesey) Limited | Households | 1986 |
| Crop Corporation Ltd | Agriculture & fishing | 2022 |
| Crown Decor U.K. Limited | Wholesale & retail | 2024 |
| Crownstone Property Management Ltd | Financial services | 2025 |
| Croxson Consulting Ltd | Professional & scientific | 2015 |
| Cruz Associates Ltd | Real estate | 2017 |
| Crystal Cleaners (Weybridge) Limited | Other services | 2015 |
| CS Eventing Limited | Agriculture & fishing | 2018 |
| CS Watches Ltd | Wholesale & retail | 2021 |
| Cshm Wealth Management Ltd | Professional & scientific | 2023 |
| CT Renova Limited | Construction | 2026 |
| CTA Fintech Solutions Ltd | Financial services | 2023 |
| Cube Basements Limited | Extraterritorial | 2018 |
| Cube Build Limited | Extraterritorial | 2011 |
| Cube Lofts Limited | Construction | 2010 |
| Cudajet Ltd | Manufacturing | 2018 |
| Cultivar Media Limited | Information & communication | 2014 |
| Cumberland Inns Trading Limited | Hospitality | 2008 |
| Cuprum Energy Limited | Professional & scientific | 2015 |
| Curchod & Co LLP | | 2007 |
| Curlew Advisors Ltd | Professional & scientific | 2018 |
| Currier Construction Ltd | Construction | 2021 |
| Curtis Prestige Properties Limited | Real estate | 2015 |
| Custom Self Build Ltd | Construction | 2009 |
| CV Checker Limited | Administrative & support | 2003 |
| CW Pipewise Ltd | Construction | 2023 |
| CWH Stunts Ltd | Arts & recreation | 2014 |
| Cxown Limited | Professional & scientific | 2018 |
| Cyberbase Consulting Limited | Administrative & support | 2018 |
| Cycling World CUP Ltd | Arts & recreation | 2020 |
| Cygnus (Surrey) Ltd | Real estate | 2023 |
| D & L Sound and Vision Limited | Information & communication | 1995 |
| D a G Management Limited | Professional & scientific | 2017 |
| D and N Harrison Ltd | Wholesale & retail | 2015 |
| D B Theissen Limited | Education | 2014 |
| D G Sports Consultants Limited | Arts & recreation | 2009 |
| D J & J Holdings Limited | Real estate | 2024 |
| D P Solutions UK Limited | Wholesale & retail | 2004 |
| D Smith Brickwork Limited | Construction | 2003 |
| D&G Roofing Ltd | Construction | 2025 |
| D&H Autosmart Repairs Limited | Wholesale & retail | 2025 |
| D&H Fixings Ltd | Wholesale & retail | 2023 |
| D&K Capital Ltd | Construction | 2022 |
| D&K Groundworks Contractor Ltd | Construction | 2016 |
| D'Orville Catering Ltd | Hospitality | 2017 |
| D'Oyly Carte Island Services Limited | Transport & logistics | 2024 |
| D'Oyly Carte Music Limited | Information & communication | 2021 |
| D. E. W. Building & Carpentry Ltd | Construction | 2011 |
| D.M.B. Carpentry & Joinery Limited | Construction | 1987 |
| D.W. Carpentry & Joinery Limited | Construction | 2004 |
| D.W. Services LLP | | 2021 |
| D4 Innovations Limited | Financial services | 2023 |
| DA Vinci UK (Holdings) Limited | Wholesale & retail | 2017 |
| Daibutsu Limited | Financial services | 2009 |
| Daikin Airconditioning UK Limited | Energy | 2002 |
| Daikin UK Limited | Wholesale & retail | 2007 |
| Dairy Crest Group Limited | Manufacturing | 1996 |
| Dairy Crest Limited | Manufacturing | 1986 |
| Dairy Crest Pension Trustees Limited | Professional & scientific | 1986 |
| Dairy Crest UK Limited | Administrative & support | 2008 |
| Dallas Burger Joint Limited | Hospitality | 2024 |
| Dalton Wong Training Limited | Arts & recreation | 2025 |
| Dambusters Limited | Transport & logistics | 2014 |
| Dandini II Limited | Wholesale & retail | 2013 |