| Character Creations Limited | Other services | 1991 |
| Charcott Developments Ltd | Construction | 2019 |
| Charge Engineering Compliance Ltd | Professional & scientific | 2023 |
| Charisma Enterprises Limited | Other services | 1995 |
| Charles Downey Properties Ltd | Real estate | 2019 |
| Charles Thoburn Limited | Health & social care | 2010 |
| Charles Woollam Limited | Real estate | 2015 |
| Charliehouse Limited | Administrative & support | 2014 |
| Chart Finance Limited | Administrative & support | 2010 |
| Chase Finance Limited | Financial services | 2025 |
| Chaser Inn Ltd | Hospitality | 2020 |
| Chatto Road (Management) Limited | Households | 1999 |
| Chatty Sprouts Limited | Health & social care | 2025 |
| Cheamsiam Ltd | Health & social care | 2020 |
| Cheetah Properties Limited | Real estate | 1986 |
| Chelsea Urology Ltd | Health & social care | 2026 |
| Cherie Investments Limited | Extraterritorial | 2021 |
| Cherry Electrical Ltd | Construction | 2023 |
| Chessman-Davey Limited | Health & social care | 2026 |
| Chestnut Corner Medical Ltd | Health & social care | 2023 |
| CHI Lowen Properties Ltd | Real estate | 2020 |
| Chiddingstone Developments Ltd | Construction | 2017 |
| Chill Mill Estates Limited | Real estate | 2019 |
| Chilli HUT Tonbridge Limited | Hospitality | 2026 |
| Chilli Productions Limited | Other services | 2014 |
| Chillmech Group Ltd | Professional & scientific | 2017 |
| Chillmech Holdings Limited | Real estate | 1999 |
| Chillmech Limited | Professional & scientific | 1976 |
| Chinthan Technologies Limited | Information & communication | 2015 |
| Chipri Limited | Real estate | 2020 |
| Chipri Optical Ltd | Financial services | 2024 |
| Chiro London SE1 Ltd | Health & social care | 2010 |
| Chris Eldridge Farriery Ltd | Agriculture & fishing | 2023 |
| Christoe Consulting Limited | Information & communication | 2025 |
| Chroma Vision Limited | Manufacturing | 2001 |
| Chrome Laboratory Ltd | Health & social care | 2013 |
| Cies International Limited | Mining & quarrying | 2019 |
| Ciney Investments Limited | Administrative & support | 2008 |
| Circatron Ltd | Manufacturing | 1983 |
| Citizens Advice in North & West Kent | Information & communication | 2000 |
| City Business Telecommunications Limited | Information & communication | 2023 |
| City Careers Recruitment Ltd | Administrative & support | 2018 |
| City Caterers Limited | Hospitality | 2005 |
| City Market Kent Ltd | Wholesale & retail | 2025 |
| City Wide Electrical Limited | Construction | 2016 |
| CJ Merritt Ltd | Construction | 2017 |
| Cjrm Limited | Administrative & support | 2016 |
| CJS Maintenance Limited | Construction | 2013 |
| Claratus Commercial Finance Limited | Financial services | 2014 |
| Claratus Employee Ownership Trustee Ltd | Administrative & support | 2021 |
| Claren Investments Limited | Real estate | 2016 |
| Claridge Design Ltd | Professional & scientific | 2018 |
| Clarikay Limited | Professional & scientific | 2019 |
| Clarity Advice & Management Ltd | Financial services | 2016 |
| Clarity Finance Consulting Limited | Professional & scientific | 2026 |
| Clarity Forensic Services Ltd | Professional & scientific | 2012 |
| Clark & Company Information Governance Services Ltd | Information & communication | 2019 |
| Clark & Company Training Services Ltd | Information & communication | 2024 |
| Clark Accountancy Group Limited | Professional & scientific | 2009 |
| Clark and Company (Accountancy) Limited | Extraterritorial | 2009 |
| Clarke Kiernan LLP | | 2015 |
| Clarke TIN Whistle Company Limited(The) | Manufacturing | 1986 |
| Clarke Williams Ltd | Financial services | 2016 |
| Clarkhill Limited | Agriculture & fishing | 2010 |
| Clarkman Holdings Limited | Real estate | 2022 |
| Classic Car Rooms Ltd | Transport & logistics | 2026 |
| Classical Conversations Uk&I Limited | Education | 2020 |
| Clay Cellar Limited | Wholesale & retail | 2002 |
| Claygate Distribution Holdings Limited | Administrative & support | 2016 |
| Cleanexcel Ltd | Administrative & support | 2019 |
| Clearjet Pressure Washing Ltd | Administrative & support | 2025 |
| Clearly Group Limited | Construction | 2005 |
| Clearly Planning & Project Management Ltd | Financial services | 2021 |
| Clearly Renovations Limited | Construction | 2005 |
| Clearview Accounting Solutions Limited | Professional & scientific | 2009 |
| Clearway Properties Limited | Real estate | 2019 |
| Cleo Value Creation Ltd | Professional & scientific | 2026 |
| CLH Consultancy Services Limited | Professional & scientific | 2018 |
| Clhd Properties Ltd | Real estate | 2026 |
| Clifford Associates Ltd | Professional & scientific | 2025 |
| Climateandme Ltd | Professional & scientific | 2021 |
| Climb LDN Ltd | Professional & scientific | 2021 |
| Clinical Intelligence Ltd | Professional & scientific | 2025 |
| Clinique LA Prairie UK Ltd. | Health & social care | 2022 |
| Clip N Climb Operating Ltd | Administrative & support | 2017 |
| Clip N Climb Tonbridge Ltd | Administrative & support | 2017 |
| Closeheath Limited | Construction | 2022 |
| Cloud & Sky Cctv Operation Ltd | Administrative & support | 2019 |
| Cloud Green Solutions Limited | Information & communication | 2014 |
| Cloudwood Limited | Professional & scientific | 2008 |
| Clover Accounting Services Limited | Professional & scientific | 2011 |
| Clovis EOT Limited | Administrative & support | 2023 |
| Clovis Lande Associates Limited | Manufacturing | 1988 |
| Clue Cracker Limited | Arts & recreation | 2019 |
| CLW Consulting Limited | Professional & scientific | 2025 |
| CM Dobson Properties Limited | Real estate | 2025 |
| CM Europe Trading LLP | | 2015 |
| CM Telecom UK Ltd | Information & communication | 2012 |
| CM2 Partners Ltd | Professional & scientific | 2011 |
| Cmendo Ltd | Health & social care | 2022 |