| CBJ Ltd | Manufacturing | 2016 |
| CBM Consultancy Limited | Professional & scientific | 2014 |
| CBM Pharma Limited | Professional & scientific | 2014 |
| Cbyp Limited | Information & communication | 2018 |
| Ccdl Limited | Manufacturing | 2024 |
| CCI Ventures Ltd | Information & communication | 2023 |
| CCO Logistics Ltd | Transport & logistics | 2025 |
| CCO Rentals Limited | Administrative & support | 2026 |
| Ccpl Investments Limited | Real estate | 2018 |
| Cctv Line Ltd | Wholesale & retail | 2013 |
| CDG Logistics Cargo Ltd | Transport & logistics | 2026 |
| Cdms Group UK Ltd | Construction | 2022 |
| Cdok's (UK) Limited | Professional & scientific | 2007 |
| CDP Builder Limited | Construction | 2025 |
| Cdx.Dental LAB Limited | Manufacturing | 2026 |
| Celeiro Barn Ltd | Hospitality | 2025 |
| Celerin Beauty Ltd | Other services | 2024 |
| Celerity LS Ltd | Transport & logistics | 2014 |
| Cell Connect Ltd | Wholesale & retail | 2019 |
| Celluloid Sorceress Ltd | Information & communication | 2017 |
| Celmor Limited | Information & communication | 2025 |
| Celoform Ltd | Wholesale & retail | 2026 |
| Cemahika Construction Ltd | Construction | 2026 |
| Cement & Cement Ltd | Manufacturing | 2021 |
| Centaurus Properties Ltd | Real estate | 2013 |
| Centercomms Traffic Management Ltd | Construction | 2023 |
| Central Car Services Limited | Wholesale & retail | 2025 |
| Central Pharmaclinics Limited | Wholesale & retail | 2022 |
| Centre for Executive and Professional Development London Limited | Professional & scientific | 2022 |
| Centre for Legal Justice CIC | Health & social care | 2025 |
| Centre for Transitional Justice in SRI Lanka | Public administration | 2016 |
| Century HB Ltd | Households | 2017 |
| CEO Business Solutions Ltd | Professional & scientific | 2022 |
| Ceramic Traders Ltd | Wholesale & retail | 2025 |
| Cerbul Romanesc Limited | Hospitality | 2016 |
| Certified Business Worldwide Ltd | Wholesale & retail | 2025 |
| Certilearning Limited | Professional & scientific | 2025 |
| Cestates LET Limited | Real estate | 2015 |
| Cestates Limited | Real estate | 2014 |
| Cf-Companies.Uk Ltd | Wholesale & retail | 2025 |
| CFC Kairos Ltd | Manufacturing | 2026 |
| Cfds Property Ltd | Real estate | 2020 |
| CG Receivers Limited | Construction | 2025 |
| CGI Graphics Limited | Professional & scientific | 2019 |
| CGM Snacks & Drinks 24/7 Limited | Wholesale & retail | 2026 |
| CH London Lawyers Ltd | Professional & scientific | 2026 |
| Chaboba Limited | Hospitality | 2010 |
| Chai Spice Ltd | Hospitality | 2025 |
| Chai Villa Limited | Hospitality | 2025 |
| Chaicoholic Ltd | Wholesale & retail | 2025 |
| Chaitanya Enterprise Ltd | Information & communication | 2019 |
| Chama Accountants Ltd | Professional & scientific | 2012 |
| Chamberlayne One Limited | Real estate | 2020 |
| Chamberlayne Property Management Ltd | Real estate | 2020 |
| Chamberlayne Three Limited | Real estate | 2020 |
| Chamberlayne Two Limited | Real estate | 2020 |
| Champers (Wholesale) Limited | Wholesale & retail | 2013 |
| Champion Hair Ltd | Other services | 2025 |
| Champion Laptops Ltd | Wholesale & retail | 2017 |
| Champions Properties Ltd | Real estate | 2023 |
| Chancery Court Investments Limited | Real estate | 2016 |
| Chand Restaurants Ltd | Hospitality | 2023 |
| Chander & Sons (UB2) Limited | Wholesale & retail | 2023 |
| Changing Streams CIC | Professional & scientific | 2019 |
| Channel Point Properties | | 1993 |
| Chapplincaters Ltd | Wholesale & retail | 2026 |
| Charles Allensworth Fisher | Other services | 2020 |
| Charles Fisher | Extraterritorial | 2023 |
| Charles Morley Estate Agents Ltd | Real estate | 2010 |
| Charles Roofing Services Ltd | Construction | 2022 |
| Charles Waldorf Global Ltd | Administrative & support | 2026 |
| Charlotte Court (Lyon Park) Management Company Limited | Households | 1999 |
| Charms Energy Ltd | Wholesale & retail | 2021 |
| Charms Enterprise Ltd | Wholesale & retail | 2013 |
| Charotar Patel Limited | Hospitality | 2025 |
| Chartica Ltd | Information & communication | 2024 |
| Chase Court Management Limited | Real estate | 1972 |
| Chase Merril Ltd | Manufacturing | 2016 |
| Chatham Bay Club & Resort Limited | Administrative & support | 2013 |
| Chaudhari Builders Ltd | Construction | 2023 |
| Chauffeurcaller Ltd | Transport & logistics | 2014 |
| Chaufranc Limited | Transport & logistics | 2016 |
| Chauhan Holdings Limited | Real estate | 2017 |
| Cheaperzone Limited | Wholesale & retail | 2023 |
| Check the Label Ltd | Information & communication | 2018 |
| Checkin Hotel Management Ltd | Hospitality | 2012 |
| Checkmate Estates (Management) Ltd | Real estate | 2022 |
| Cheeky Monkey's Day Nursery (London) Limited | Health & social care | 2016 |
| Cheema Patel Investments Ltd | Real estate | 2021 |
| Chef's Secrets Limited | Hospitality | 2024 |
| Chefs Flame Kitchen Ltd | Hospitality | 2025 |
| Chelariu Ltd | Construction | 2018 |
| Chelsea Painters and Decorators Ltd | Construction | 2021 |
| Chelsea Capital Limited | Real estate | 2023 |
| Chelsea Greens Properties Ltd | Wholesale & retail | 2024 |
| Chelsea IT Ltd | Wholesale & retail | 2026 |
| Chemie Solve Sourcing Limited | Wholesale & retail | 2014 |
| Chemilines Group Holdings Limited | Wholesale & retail | 2001 |
| Chemilines Limited | Wholesale & retail | 1987 |
| Chennai Chutnei Limited | Hospitality | 2018 |