| Camelot Build Ltd | Construction | 2016 |
| Camelot Pictures Limited | Manufacturing | 2008 |
| Camfused Care Limited | Health & social care | 2024 |
| Camjtacomposites.Com Limited | Manufacturing | 2025 |
| Camnish House Management Company Limited | Households | 2006 |
| Camomile Health Services Limited | Health & social care | 2023 |
| Camouflage Digital Ltd | Professional & scientific | 2016 |
| Campbell Cole Ltd | Manufacturing | 2014 |
| Campbell Estates 1 Ltd | Real estate | 2025 |
| Campbell&Weightman Limited | Administrative & support | 2024 |
| Campbells Early Years Ltd | Education | 2025 |
| Campground Limited | Households | 2025 |
| Campus Corner Limited | Real estate | 2025 |
| Campushaven Limited | Real estate | 2025 |
| Cams Rail Limited | Real estate | 2013 |
| Can'T Stop Won'T Stop Academy Ltd | Education | 2018 |
| Canaan Foodstore Ltd | Wholesale & retail | 2025 |
| Canaan Stores Ltd | Wholesale & retail | 2019 |
| Canaan Trust | Health & social care | 2004 |
| Canadian Info Tech Ltd | Information & communication | 2023 |
| Canal Boat Vacations Ltd | Administrative & support | 2023 |
| Canal Street Tyres Ltd | Wholesale & retail | 2018 |
| Canal Ventures Ltd | Hospitality | 2010 |
| Canalside Heritage Centre | Other services | 2011 |
| Canalside Number 2 (Ilkeston) Management Company Limited | Households | 2019 |
| Canalside Wharf Developments Limited | Construction | 2016 |
| Canalside Wharf Management Company Limited | Households | 2017 |
| Canapii Limited | Information & communication | 2021 |
| Canari Capital Ltd | Real estate | 2023 |
| Canaryhall Limited | Real estate | 1993 |
| Canax Ltd | Manufacturing | 2020 |
| Canaxlife Ltd | Wholesale & retail | 2025 |
| Cancan Property Ltd | Real estate | 2025 |
| Cancer Impact Support Services CIC | Health & social care | 2020 |
| Cancer Options Limited | Health & social care | 2003 |
| Candex Business Solutions Ltd | Professional & scientific | 2025 |
| Candid Consultancy Ltd | Professional & scientific | 2020 |
| Candid Group Ltd | Professional & scientific | 2021 |
| Candid Technology Ltd | Wholesale & retail | 2022 |
| Candlestick Press Limited | Information & communication | 2008 |
| Candooh Media Ltd | Professional & scientific | 2022 |
| Candyroo Limited | Wholesale & retail | 2022 |
| Canei International Limited | Wholesale & retail | 1991 |
| Caniformia Ltd | Wholesale & retail | 2025 |
| Canine Academy Limited | Other services | 2007 |
| Canine Bloodline Ltd | Professional & scientific | 2025 |
| Cankaya Ltd | Hospitality | 2026 |
| Canlin Castings Limited | Manufacturing | 1958 |
| Canlin Developments Limited | Extraterritorial | 1975 |
| Cann Energy Consultants Ltd | Professional & scientific | 2021 |
| Canna Holdings Ltd | Manufacturing | 2003 |
| Canna Magic Limited | Manufacturing | 2019 |
| Cannada Research Ltd | Wholesale & retail | 2018 |
| Canning Chambers Ltd | Real estate | 2021 |
| Canning Limited | Real estate | 1984 |
| Canninstall Limited | Manufacturing | 2011 |
| Cannop Data Storage Ltd | Information & communication | 2025 |
| Cannusafe Ltd | Manufacturing | 2025 |
| Canoe Foundation | Arts & recreation | 2007 |
| Canon Barbers Ltd | Other services | 2016 |
| Canon Pharma Ltd | Professional & scientific | 2025 |
| Canopy 2050 CIC | Agriculture & fishing | 2023 |
| Canoville Football Club Ltd | Arts & recreation | 2025 |
| Canoville Gym Limited | Arts & recreation | 2023 |
| Canoville Mentoring Ltd | Education | 2025 |
| Canpharmaconsulting Ltd | Professional & scientific | 2017 |
| Cantax Business Services Ltd | Professional & scientific | 1999 |
| Canterbury Tech IP Ltd | Information & communication | 2025 |
| Canterbury Technical Solutions Limited | Information & communication | 2018 |
| Canterburys of Keyworth Limited | Wholesale & retail | 2012 |
| Cantileiver Creations Limited | Manufacturing | 2017 |
| Cantine Dell'Angelo Limited | Wholesale & retail | 2019 |
| Canton Chef 2021 Ltd | Hospitality | 2021 |
| Capajunkie Limited | Wholesale & retail | 2024 |
| Capatex Care Ltd | Manufacturing | 2019 |
| Capatex Limited | Manufacturing | 1995 |
| Cape Marco Ltd | Transport & logistics | 2019 |
| Cape RE 2 Limited | Energy | 2015 |
| Cape RE 3 Limited | Energy | 2018 |
| Cape RE 4 Limited | Energy | 2019 |
| Cape RE Limited | Energy | 2014 |
| Capel Investments Limited | Real estate | 2007 |
| Capelli Distributers Ltd | Wholesale & retail | 2025 |
| Capesouth Limited | Real estate | 2000 |
| Capewell Cleaning Company Limited | Other services | 2020 |
| Capewell Properties Limited | Real estate | 2019 |
| Capewell Window Cleaning Company Ltd | Administrative & support | 2026 |
| Capexpand Ltd | Financial services | 2022 |
| Caphr Consulting Limited | Professional & scientific | 2026 |
| Capiche Records UK Ltd | Information & communication | 2025 |
| Capital Alliance Financial Services Ltd | Financial services | 2003 |
| Capital and Provincial Leisure Limited | Hospitality | 2020 |
| Capital City Solutions Limited | Construction | 2008 |
| Capital Civils Ltd | Construction | 2014 |
| Capital Compass LLC Limited | Professional & scientific | 2025 |
| Capital Design and Build Ltd | Construction | 2019 |
| Capital Flooring & Blinds Ltd | Construction | 2023 |
| Capital Innovation Ltd | Professional & scientific | 2015 |
| Capital JAY Limited | Professional & scientific | 2019 |
| Capital Land Ltd | Real estate | 2025 |