| Copycat Imaging Limited | Administrative & support | 1962 |
| COR Creative Ltd | Information & communication | 2003 |
| Coral Family Holdings Limited | Financial services | 2025 |
| Cordery Build Holdings Limited | Professional & scientific | 2007 |
| Cordery Build Limited | Construction | 1993 |
| Coreline Construction Ltd | Construction | 2016 |
| Corineus Limited | Information & communication | 2008 |
| Corium House Freehold Limited | Administrative & support | 2013 |
| Corndale Estates Limited | Real estate | 1935 |
| Cornmeter Limited | Wholesale & retail | 2014 |
| Corriblex Limited | Professional & scientific | 2024 |
| Cortec Ltd | Construction | 2017 |
| Cosmereg Ltd | Wholesale & retail | 2013 |
| Cottonwood Media Limited | Information & communication | 2024 |
| Coubari Ltd | Information & communication | 2010 |
| Counter Music Limited | Information & communication | 2013 |
| Courtyard House (Godalming) Limited | Real estate | 2016 |
| Courus Limited | Information & communication | 2015 |
| CP Yachts Ltd | Manufacturing | 2023 |
| CP475 Holdco Limited | Financial services | 2025 |
| CP475 Limited | Financial services | 2025 |
| CP475 Midco Limited | Financial services | 2025 |
| CP475B Limited | Financial services | 2025 |
| CR Dental Smile Limited | Health & social care | 2021 |
| Craft Beer Events Ltd | Hospitality | 2026 |
| Cramhurst Systems Limited | Information & communication | 2012 |
| Cranley Common Limited | Real estate | 2023 |
| Creation Works Ltd | Manufacturing | 2024 |
| Creative Garage Ltd | Administrative & support | 2014 |
| Crescent Construction (Surrey) Limited | Construction | 2025 |
| Cresswell Plant Hire Limited | Administrative & support | 2003 |
| Crest & Collar Ltd | Wholesale & retail | 2026 |
| Crest Lodge Care Centre Limited | Health & social care | 2018 |
| Crestheath Limited | Wholesale & retail | 2001 |
| Crew Radar Ltd | Information & communication | 2025 |
| Cricketers House Ltd | Construction | 2023 |
| Croft Improvements Ltd | Construction | 2020 |
| Croft Nurseries (Elstead) Residents Association Limited | Households | 2006 |
| Cropcraft Services Limited | Agriculture & fishing | 2025 |
| Crosbie Builders Ltd | Construction | 2015 |
| Crosbies Direct Ltd | Hospitality | 2015 |
| Crosbies Limited | Manufacturing | 2007 |
| Cross Farm Shackleford (Garages) Residents Association Limited | Households | 1997 |
| Cross Farm Shackleford Residents Association Limited | Real estate | 1997 |
| Cross Studios Ltd | Information & communication | 2017 |
| Crown Building Services (Witley) Limited | Construction | 2025 |
| Crownpits Lane Ltd | Households | 2018 |
| Crownwall Builders Limited | Construction | 2020 |
| CSB Business Advisory Services Limited | Professional & scientific | 2015 |
| CSB Commercial Limited | Real estate | 2009 |
| CSL Holdings Ltd | Information & communication | 2018 |
| CSL SS Enterprises Ltd | Financial services | 2019 |
| Culver House Management Company Limited | Households | 1987 |
| Curated Heritage Homes Ltd | Real estate | 2026 |
| Currie Partners Limited | Professional & scientific | 2012 |
| Curzon Financial Limited | Financial services | 2018 |
| CUT Media Limited | Information & communication | 2022 |
| Cutting Edge Food Limited | Hospitality | 2017 |
| CV Pharma Limited | Health & social care | 1999 |
| CWE a Limited | Financial services | 2020 |
| CWE Airdrie Limited | Energy | 2014 |
| CWE B Limited | Financial services | 2020 |
| CWE Belhus Limited | Energy | 2016 |
| CWE Delta Limited | Financial services | 2026 |
| CWE Donaldson Limited | Energy | 2016 |
| CWE DS Limited | Energy | 2013 |
| CWE Echo Limited | Financial services | 2026 |
| CWE Endurance Limited | Energy | 2011 |
| CWE Endure Limited | Energy | 2014 |
| CWE Gardrum Limited | Energy | 2014 |
| CWE Jacobshall Limited | Energy | 2014 |
| CWE Lochend Limited | Energy | 2021 |
| CWE Meikle Float Limited | Energy | 2013 |
| CWE Northwind Limited | Energy | 2011 |
| CWE Norwin Limited | Energy | 2012 |
| CWE NW3 Limited | Energy | 2014 |
| CWE RTW Limited | Energy | 2014 |
| CWE Struan Limited | Energy | 2013 |
| CWE Turbines Limited | Energy | 2020 |
| CWE V27 Limited | Energy | 2015 |
| CWE Vestas Limited | Energy | 2014 |
| CWE WH Limited | Administrative & support | 2012 |
| CWE WTN Limited | Energy | 2014 |
| CWE WUK Limited | Energy | 2011 |
| CWE X Limited | Energy | 2015 |
| CXG Plumbing & Heating Ltd | Construction | 2024 |
| Cyber Cloud Group Limited | Manufacturing | 2023 |
| Cybersafe Advisory Services Ltd | Information & communication | 2024 |
| Cygnet Ltd | Extraterritorial | 2015 |
| Cypress Properties Limited | Real estate | 2016 |
| D & M Planning Limited | Professional & scientific | 2011 |
| D & S Elliott Roofing Limited | Construction | 2019 |
| D'Sa and Associates Limited | Professional & scientific | 2016 |
| D-Still Ltd | Manufacturing | 2019 |
| D.S. Johnston (Holdings) Limited | Professional & scientific | 1974 |
| D.S. Johnston Properties Limited | Real estate | 1926 |
| D2 ID Limited | Professional & scientific | 2006 |
| D2VISION Limited | Administrative & support | 2007 |
| D411Y Limited | Professional & scientific | 2013 |
| D7 Clothing Ltd | Wholesale & retail | 2013 |