| CF Investment Property Ltd | Real estate | 2024 |
| CFC 26 Limited | Real estate | 2004 |
| CFE UK Solutions Ltd | Public administration | 2019 |
| CFL Finance Limited | Financial services | 2006 |
| CFM London Limited | Administrative & support | 2016 |
| CFO Partners Limited | Professional & scientific | 2015 |
| CG Ergonomics Ltd | Professional & scientific | 2022 |
| CG Partners Limited | Professional & scientific | 2018 |
| CGW Advisory Ltd | Administrative & support | 2018 |
| CGZ Consultancy Ltd | Professional & scientific | 2021 |
| Ch.Younas Ltd | Hospitality | 2021 |
| CHA WAN JIA UK Ltd | Hospitality | 2019 |
| Chachasan Limited | Hospitality | 2025 |
| Chadwell Heath Lettings Ltd | Real estate | 2022 |
| Chairsyde Video Consulting Limited | Health & social care | 2020 |
| Chale Abbey Studios Limited | Information & communication | 2012 |
| Chalk Build Ltd | Construction | 2018 |
| Chalk Farm Properties Limited | Real estate | 1964 |
| Challipa Ltd | Wholesale & retail | 2023 |
| Chambers Court Property Ltd | Real estate | 2024 |
| Chambers Court RTM Company Ltd | Households | 2017 |
| Chambers Freeholders Limited | Real estate | 2025 |
| Chameleon Consultants Ltd | Real estate | 2019 |
| Chance Lewis Construction Ltd | Construction | 2016 |
| Changekit Limited | Administrative & support | 2011 |
| Chanya Consulting Ltd | Professional & scientific | 2012 |
| Chapel Davies Ltd | Real estate | 2020 |
| Chaps&Co Ltd | Other services | 2022 |
| Chapter Eight Ltd. | Wholesale & retail | 2025 |
| Chapter Interiors Limited | Construction | 2025 |
| Charalambos Group Ltd | Real estate | 2021 |
| Charalambos Limited | Extraterritorial | 2017 |
| Charalamboss Group Ltd | Extraterritorial | 2021 |
| Charalamboss Limited | Extraterritorial | 2017 |
| Charge Hub Limited | Construction | 2025 |
| Charge UP Gym Ltd | Arts & recreation | 2021 |
| Charity Talent Limited | Administrative & support | 2015 |
| Charla Ltd | Construction | 2024 |
| Charles Rose Investments Limited | Real estate | 1998 |
| Charlie's Blue Poppy | Other services | 2017 |
| Charnpal Singh Uppal Ltd | Professional & scientific | 2010 |
| Charterbuild Limited | Extraterritorial | 2021 |
| Charterhouse Simon Limited | Real estate | 1973 |
| Chartwell Court Barnet (Freehold) Limited | Professional & scientific | 1984 |
| Chase & Piper Publishing Ltd | Information & communication | 2019 |
| Chase Intelligenza Limited | Information & communication | 2009 |
| Chasewood (Enfield) NO. 1 Residents Company Limited | Households | 1986 |
| Chaters Wholesale Ltd | Wholesale & retail | 2010 |
| Chattenden Pro Wash Ltd | Administrative & support | 2025 |
| Chauffeur Consulting Ltd | Transport & logistics | 2017 |
| Checkalow Limited | Construction | 1981 |
| Cheers Heaven Ltd | Wholesale & retail | 2025 |
| Chef James Adams Consultancy Ltd | Hospitality | 2014 |
| Chelmsford Chiropractic Clinic Limited | Health & social care | 2007 |
| Chelsea PUB Owners Limited | Administrative & support | 2018 |
| Cherfan Motors Limited | Wholesale & retail | 2006 |
| Cheriton Flat Management Company Limited | Households | 1977 |
| Cherry Lodge Cancer Care Limited | Information & communication | 1992 |
| Cherry Tree Lane Investments Limited | Real estate | 2018 |
| Cherrytime Health Limited | Wholesale & retail | 2025 |
| Chester Productions Limited | Arts & recreation | 1993 |
| Chesterhill Charitable Trust Limited | Education | 2016 |
| Chesterhill Investments Limited | Real estate | 1972 |
| Chevron Associates Ltd | Professional & scientific | 2024 |
| Chevron Investment Holdings Limited | Real estate | 2019 |
| CHI CHI Land Limited | Transport & logistics | 2016 |
| Chicken Cottage (UK) Limited | Hospitality | 2007 |
| Chickp Streetfood Limited | Administrative & support | 2016 |
| Chicks and Fins Limited | Wholesale & retail | 2020 |
| Chieda Medical Consulting Limited | Health & social care | 2015 |
| Childcare at the Laurels Ltd | Health & social care | 2018 |
| Children's Hospices Across London | Health & social care | 2012 |
| Chill & Sizzle Ltd | Hospitality | 2026 |
| Chiltern Dermatology Services Limited | Health & social care | 2008 |
| Chiltern Management (Barnet) Limited | Households | 1971 |
| Chiltern Motor Company (Digswell) Limited | Wholesale & retail | 2002 |
| Chime Consulting Ltd | Extraterritorial | 2024 |
| Chime Promotions Limited | Information & communication | 2024 |
| Chinex Ltd | Information & communication | 2019 |
| CHJ Consulting Limited | Professional & scientific | 2019 |
| Chloe Jade Mitchell Limited | Professional & scientific | 2025 |
| Choudry Malik Properties Ltd | Real estate | 2013 |
| Chris Anthony Estates Limited | Real estate | 2006 |
| Chris Anthony Investments Limited | Real estate | 2017 |
| Chris Anthony Management Limited | Real estate | 2019 |
| Chris Ball & SON Roofing Limited | Construction | 1995 |
| Chris Douglas Imaging Limited | Professional & scientific | 2006 |
| Chris Harmanda Family Ltd | Real estate | 2018 |
| Chris Johnstone Visuals Ltd | Information & communication | 2025 |
| Chris Saunders Associates Limited | Professional & scientific | 2001 |
| Chris Wilson Family Investments Ltd | Real estate | 2021 |
| Christi-Anna Lomas Ltd | Manufacturing | 2023 |
| Christian Antonee Ltd | Health & social care | 2014 |
| Christian Douglas Photography Limited | Professional & scientific | 2001 |
| Christine Williams Consultancy Ltd | Hospitality | 2017 |
| Christmas Wonderland Limited | Professional & scientific | 1995 |
| Christodoulou Properties Limited | Hospitality | 1992 |
| Christoforou Real Estate Limited | Real estate | 2019 |
| Christopher Michael Limited | Professional & scientific | 2006 |
| Christopher Street Limited | Households | 2025 |