| Cambrian Dragon Ltd | Financial services | 2002 |
| Cambrian Dragon Securities Limited | Financial services | 1964 |
| Cambrian Environmental Technologies Limited | Mining & quarrying | 2001 |
| Cambrian Industries Limited | Wholesale & retail | 1978 |
| Cambrian Interventions Ltd | Health & social care | 2025 |
| Cambrian Park Limited | Professional & scientific | 2021 |
| Cambrian Quay Management Company Limited | Administrative & support | 2014 |
| Cambrian Steel Limited | Manufacturing | 2025 |
| Cambrian Utilities Limited | Water & waste | 2016 |
| Cambrian Water Limited | Mining & quarrying | 2025 |
| Cambridge College of Technology,Oxford College of Science,Harvard College of Education Ltd | Education | 2024 |
| Cambridge Continental Limited | Real estate | 2006 |
| Cambridge Financial Limited | Professional & scientific | 2014 |
| Cambridge House 2006 Management Company Limited | Real estate | 2006 |
| Cambridge Open Centre | Education | 1993 |
| Cambridge Renewable Solutions Ltd | Energy | 2025 |
| Camburf Limited | Wholesale & retail | 2025 |
| Camden Chippy's Ltd | Hospitality | 2018 |
| Camel Store Ltd | Wholesale & retail | 2025 |
| Cameo Cleaning Services (Wales) Limited | Other services | 1990 |
| Camera Centre Newport Limited | Wholesale & retail | 2010 |
| Camera Centre UK Limited | Wholesale & retail | 1995 |
| Cameras by MAX Ltd | Wholesale & retail | 2023 |
| Cameratech Electrical Ltd | Construction | 2019 |
| Cameron + Ross People Limited | Administrative & support | 2026 |
| Cameron Consulting Limited | Financial services | 2013 |
| Cameron Stockton Brands Ltd | Professional & scientific | 2021 |
| Camflex Limited | Construction | 1987 |
| Camile Classified UK Limited | Manufacturing | 2022 |
| Camilleri Construction Limited | Construction | 1985 |
| Camilleri Group Holdings Limited | Financial services | 2018 |
| Camilleri Investments Limited | Financial services | 2024 |
| Camilleri Limited | Professional & scientific | 2024 |
| Camilleri Property Developments Limited | Real estate | 2024 |
| Camilleri Property Services Ltd | Construction | 2020 |
| Caminhos Dance Collective Ltd | Arts & recreation | 2025 |
| Camklen Limited | Administrative & support | 2015 |
| Camlas Limited | Professional & scientific | 2006 |
| Camlea Ltd | Construction | 2013 |
| Camloch Limited | Professional & scientific | 2019 |
| Camoto Limited | Real estate | 2012 |
| Camp Communications Limited | Information & communication | 2019 |
| Campabor | Professional & scientific | 2025 |
| Campaignup Ltd | Information & communication | 2017 |
| Campbell Davison Media Ltd. | Information & communication | 1991 |
| Campbell HIS & HER Motors Ltd | Wholesale & retail | 2017 |
| Campfire Digital Ltd | Information & communication | 2024 |
| Camping Bode Ltd | Wholesale & retail | 2025 |
| Campus Offices (Mount ST) Limited | Real estate | 2023 |
| Campuslifestyle (Houses) Ltd | Real estate | 2004 |
| Camrx Limited | Administrative & support | 1994 |
| Camsat Ltd. | Information & communication | 2010 |
| Camscott Properties Ltd | Real estate | 2026 |
| Camstreet UK Limted Ltd | Wholesale & retail | 2021 |
| Camulodunum Central Investments Ltd | Hospitality | 2022 |
| CAN and Opener Limited | Real estate | 2018 |
| CAN BE Done CBD Limited | Wholesale & retail | 2020 |
| CAN Property Ltd | Construction | 2021 |
| Cana-Express Ltd | Construction | 2025 |
| Canaan for Transporting Parcels Limited | Transport & logistics | 2023 |
| Canaan Logistics Limited | Transport & logistics | 2016 |
| Canada Consulting Limited | Professional & scientific | 2024 |
| Canada Domile Chemical Group Co., Ltd | Mining & quarrying | 2026 |
| Canada Lake & Lodge LLP | | 2019 |
| Canada Lodge Management Limited | Hospitality | 2014 |
| Canada Valadiro Plant Nutrition Company Co., Ltd | Mining & quarrying | 2026 |
| Canadian Energy Ltd | Construction | 2020 |
| Canal Function Room Ltd | Hospitality | 2025 |
| Canal Group Ltd | Hospitality | 2025 |
| Canal Quarter Cardiff Limited | Real estate | 2019 |
| Canal Quarter Trading Ltd | Hospitality | 2023 |
| Canalsense Innovations Ltd | Hospitality | 2025 |
| Canarth RBH Ltd | Transport & logistics | 2022 |
| Canary Capital Ltd | Financial services | 2022 |
| Canary Wharf Selection Ltd | Professional & scientific | 2016 |
| Cancofam Ltd | Wholesale & retail | 2020 |
| Candidate Review Ltd | Information & communication | 2025 |
| Candour Beauty Limited | Other services | 2019 |
| Candrala Limited | Wholesale & retail | 2025 |
| Candy JAR Limited | Information & communication | 2010 |
| Candy Monkeys Ltd | Financial services | 2012 |
| Candyland Nails & Beauty Limited | Wholesale & retail | 2015 |
| Candylovenaturecare Ltd | Wholesale & retail | 2018 |
| Candyplanet Ltd | Wholesale & retail | 2016 |
| Canelo Limited | Construction | 2002 |
| Canhwyllau Canna Candles Ltd | Manufacturing | 2020 |
| Canine Rehabilitation Limited | Professional & scientific | 2021 |
| Canis (UK) Ltd | Other services | 2014 |
| Canley Digital Healthcare Ltd | Information & communication | 2017 |
| Canmore Consultancy Limited | Professional & scientific | 2017 |
| Canna Creative Limited | Information & communication | 2013 |
| Canna Global Investments PLC | Agriculture & fishing | 2019 |
| Canna Production Services Ltd | Information & communication | 2010 |
| Canna Scientific Ltd | Financial services | 2020 |
| Cannabrew Ltd | Manufacturing | 2019 |
| Cannadex Holdings PLC | Health & social care | 2021 |
| Cannadex Ltd | Health & social care | 2020 |
| Cannadex U.K. Ltd | Administrative & support | 2022 |
| Cannki Limited | Information & communication | 2020 |
| Cannons Electrical Services Ltd | Construction | 2016 |