| Centrix Legal Limited | Professional & scientific | 2016 |
| Centurion Global Risks Limited | Professional & scientific | 2025 |
| Ceramic Tile Co (Property) Limited | Professional & scientific | 2013 |
| Cerberus Paints (UK) Ltd | Manufacturing | 2021 |
| Cerberus Racing (UK) Ltd | Wholesale & retail | 2021 |
| Cert Safe Inspection Services Ltd. | Professional & scientific | 2024 |
| Certified Cars Limited | Other services | 2011 |
| Certified Claims Management Limited | Financial services | 2011 |
| Certzilla Limited | Information & communication | 2025 |
| Cerub Limited | Professional & scientific | 2003 |
| CET Product Service Ltd. | Information & communication | 2020 |
| Ceva Animal Health Limited | Professional & scientific | 1995 |
| Ceva Hampton Limited | Professional & scientific | 2020 |
| Ceylon Ventures Limited | Wholesale & retail | 2017 |
| Ceylon Wellness Limited | Wholesale & retail | 2024 |
| CFC Haemato-Oncology Consulting Limited | Professional & scientific | 2023 |
| CG Finance Ltd | Financial services | 2025 |
| CG Tree & Garden Services Limited | Administrative & support | 2022 |
| Cgguk Limited | Hospitality | 2018 |
| CGI Insurance Services Limited | Extraterritorial | 2025 |
| Cgla Projects Limited | Administrative & support | 2020 |
| Cgnu Direct Limited | Extraterritorial | 2000 |
| CGO Event Group Ltd | Transport & logistics | 2024 |
| CGS Group Ltd | Professional & scientific | 2023 |
| Cgtj Ltd | Administrative & support | 2025 |
| CH Customs Ltd | Wholesale & retail | 2024 |
| CH Performance Ltd | Education | 2024 |
| CH4 GAS and Heating Solutions Limited | Manufacturing | 2017 |
| CH4RGE IT LLC Limited | Wholesale & retail | 2023 |
| Chadwick Management Company Ltd | Real estate | 2020 |
| Chaii Shaii Limited | Hospitality | 2022 |
| Chain-Savers Limited | Real estate | 2000 |
| Chainfire Ltd | Professional & scientific | 2017 |
| Chairborough Developments Ltd | Real estate | 2020 |
| Chairhomes Ltd | Construction | 2020 |
| Chaktan Engineering Solutions Ltd | Professional & scientific | 2025 |
| Chameleon Innovations Ltd | Construction | 2025 |
| Chamfer Projects Ltd | Construction | 2018 |
| Chand Marketing Limited | Professional & scientific | 2026 |
| Chandler Garvey Holdings Ltd | Professional & scientific | 2004 |
| Chandler Garvey Ltd | Real estate | 1988 |
| Change in Mind Limited | Extraterritorial | 1995 |
| Chantler Solutions Ltd | Information & communication | 2007 |
| Chapel Lane Management (High Wycombe) Company Limited | Professional & scientific | 2012 |
| Chapel Street Group Limited | Professional & scientific | 2024 |
| Chapel Wharf Management Company Limited | Households | 2016 |
| Charfenton Services Limited | Agriculture & fishing | 2025 |
| Chargerbill Limited | Wholesale & retail | 2022 |
| Chargos UK Limited | Professional & scientific | 2024 |
| Charhoi Holdings Limited | Hospitality | 2025 |
| Chariots Prestige Limited | Wholesale & retail | 2022 |
| Charles Martin Developments Limited | Construction | 2024 |
| Charles Project Management Limited | Professional & scientific | 2008 |
| Charles Property Development Ltd | Real estate | 2022 |
| Charles Ssentamu Ltd | Transport & logistics | 2026 |
| Charles ST Management Ltd | Households | 2025 |
| Charley Says Ltd | Professional & scientific | 2013 |
| Charlie Gayner Investments Limited | Professional & scientific | 2022 |
| Charlie Scot Property Ltd | Real estate | 2015 |
| Charlie's Minibuses Limited | Transport & logistics | 2025 |
| Charlotte Head Design Limited | Professional & scientific | 2014 |
| Charugam Technologies Limited | Information & communication | 2014 |
| Charville House Ltd | Health & social care | 2025 |
| Chaseuk Limited | Wholesale & retail | 2023 |
| Chater Consulting Limited | Administrative & support | 2005 |
| Chater Financial Consultants Limited | Administrative & support | 1984 |
| Chatga Traders Limited | Hospitality | 2023 |
| Chattelworth Limited | Construction | 2003 |
| Chatters Ltd | Wholesale & retail | 2025 |
| Chaudhary Properties UK Limited | Real estate | 2023 |
| Cheer Team Corporation Ltd | Real estate | 2019 |
| Chef Bailey Ltd | Hospitality | 2024 |
| Chef Simon Mckenzie Ltd | Hospitality | 2019 |
| Chefrp Ltd | Hospitality | 2025 |
| Chelsea and Fulham Transfers Ltd | Transport & logistics | 2025 |
| Chelsea Green (VJ) Limited | Other services | 2020 |
| Chennai Spice Kitchen Ltd | Hospitality | 2025 |
| Chepping Wycombe Ltd | Education | 2013 |
| Cherish Care Group Limited | Professional & scientific | 2026 |
| Cherry Associates Limited | Education | 1986 |
| Cherry Blossom Consultancy Limited | Administrative & support | 2016 |
| Cherry Brick Properties Ltd | Households | 2018 |
| Cherry Loop Hole Ltd | Wholesale & retail | 2024 |
| Cherry Picker Visuals Ltd | Professional & scientific | 2022 |
| Cherub Flower Limited | Administrative & support | 2004 |
| Chess Financial Consulting Ltd | Professional & scientific | 2023 |
| Cheyne Aston Limited | Real estate | 2017 |
| Chicken Cottage Direct Ltd | Hospitality | 2018 |
| Chicken/Egg Limited | Professional & scientific | 2006 |
| Children of the World Montessori School Limited | Education | 1999 |
| Chillten Ltd | Real estate | 2022 |
| Chiltern & Bucks Development Ltd | Real estate | 2026 |
| Chiltern Antenna Systems Limited | Information & communication | 2013 |
| Chiltern Architecture Studio Ltd | Professional & scientific | 2025 |
| Chiltern Asset Finance Ltd | Financial services | 2002 |
| Chiltern Avenue (High Wycombe) Residents Association Limited | Households | 2004 |
| Chiltern Bodywork Repairs Ltd | Wholesale & retail | 2026 |
| Chiltern Coach Hire Ltd | Transport & logistics | 2018 |
| Chiltern Coaching Ltd. | Professional & scientific | 2015 |
| Chiltern Construction & Design Limited | Construction | 2009 |