| Creative Sign Factory Limited | Extraterritorial | 2019 |
| Creative Universe Ltd | Information & communication | 2021 |
| Creator Exports Ltd | Wholesale & retail | 2025 |
| Credenza Furniture Limited | Extraterritorial | 2017 |
| Creekmoor Day Nursery Ltd | Education | 2022 |
| Creekmoor Plaice Poole Ltd | Hospitality | 2017 |
| Cremorne Professional Services Ltd | Health & social care | 2014 |
| CREO3D Limited | Manufacturing | 2026 |
| Crescent Alliance Ltd | Professional & scientific | 2026 |
| Crescente Limited | Professional & scientific | 2017 |
| Crescentia Investments Ltd | Real estate | 2025 |
| Crescentis Growth Partners Limited | Professional & scientific | 2024 |
| Crest Commercial Interiors Limited | Construction | 1997 |
| Crest House Care Holdings Limited | Professional & scientific | 2023 |
| Crest House Care Limited | Health & social care | 2016 |
| Crest Pumps Ltd | Manufacturing | 2011 |
| Cresta Court (Bournemouth) Limited | Households | 1987 |
| Crestland Homes Ltd | Construction | 2014 |
| Creux Management Limited | Real estate | 2018 |
| Crewkerne Place Residents Limited | Households | 2023 |
| Crews Holdings Limited | Professional & scientific | 2024 |
| Crft Holdings Limited | Financial services | 2023 |
| Crft Productions Limited | Information & communication | 2022 |
| Crft Properties Limited | Real estate | 2023 |
| Criative Ltd | Professional & scientific | 2024 |
| Crichel Mount (Poole) Management Company Limited | Households | 2010 |
| Crimson Forge Limited | Information & communication | 2025 |
| Crimson Light Limited | Information & communication | 2016 |
| Critchell Fencing and Sheds Limited | Construction | 2024 |
| CRL Management Limited | Financial services | 2011 |
| Croad & Co Limited | Professional & scientific | 2006 |
| Croft Organford Ltd | Construction | 2022 |
| Croft Preservation Limited | Construction | 1996 |
| Crop Tech Services Limited | Agriculture & fishing | 2025 |
| Cross Agricultural Engineering UK Limited | Wholesale & retail | 2022 |
| Cross Court Padel Limited | Arts & recreation | 2023 |
| Crosscrown Care Services Limited | Extraterritorial | 2010 |
| Crosscrown Limited | Health & social care | 1996 |
| Crossroads Travel Ltd | Administrative & support | 2025 |
| Crosswires Consultancy Ltd. | Information & communication | 2018 |
| Crow Developments UK Ltd | Professional & scientific | 2001 |
| Crowd Control Solutions Limited | Wholesale & retail | 2016 |
| Crown Consortium Limited | Information & communication | 2011 |
| Crown Hall Management Company Limited | Households | 2023 |
| Crown Investments Group Limited | Information & communication | 2016 |
| Crown of Glory Haircare Ltd | Wholesale & retail | 2023 |
| Crown Property Group Limited | Real estate | 2017 |
| Crownbox Limited | Real estate | 1995 |
| Crownstone Realty Limited | Real estate | 2025 |
| Crowter-Jones Consulting Ltd | Information & communication | 2024 |
| Crrj Investment Limited | Real estate | 2025 |
| CRS Self Storage Ltd | Administrative & support | 2020 |
| Cruise Control Limited | Other services | 2005 |
| Cruiser Composites Ltd | Manufacturing | 2024 |
| Crumbs and Bakes Ltd | Manufacturing | 2026 |
| Crusader Sails Limited | Professional & scientific | 1979 |
| Crusew Limited | Hospitality | 2022 |
| CRUZ69 Limited | Other services | 2009 |
| Cryo Sales Ltd | Wholesale & retail | 2021 |
| Cryolabsmobile Limited | Professional & scientific | 2020 |
| Cryotherapy Labs Limited | Professional & scientific | 2017 |
| Crypteia Consulting Ltd | Administrative & support | 2023 |
| Cryptomarine Ltd | Manufacturing | 2022 |
| Cryptox Ltd | Other services | 2016 |
| Crystal Arya Ltd | Wholesale & retail | 2021 |
| Crystal Clear Finishing Ltd | Manufacturing | 2022 |
| Crystal Independent Financial Advisers Limited | Financial services | 2006 |
| Crystal Photos 3D Limited | Professional & scientific | 2012 |
| Crystals Touch Ltd | Other services | 2025 |
| Crystran Limited | Manufacturing | 1993 |
| CS Financial Consulting Limited | Information & communication | 2025 |
| CS Hats Limited | Wholesale & retail | 2024 |
| CSB Carpentry Ltd | Manufacturing | 2025 |
| CSD Accountancy Limited | Professional & scientific | 2010 |
| CSG Events Ltd | Arts & recreation | 2015 |
| Cslk Limited | Transport & logistics | 2022 |
| Cspd Limited | Wholesale & retail | 2010 |
| CSR Pure Save Ltd | Wholesale & retail | 2018 |
| CSS Holdings Limited | Financial services | 2005 |
| CST Developer Services Ltd | Other services | 2022 |
| CT Design&Engineering Consultancy Ltd | Manufacturing | 2021 |
| CTM Distribution Ltd | Wholesale & retail | 2025 |
| CTP Technologies Limited | Financial services | 2024 |
| Ctrl Cloud Ltd | Information & communication | 2026 |
| Ctrl Replay Ltd | Wholesale & retail | 2025 |
| CTU Ltd | Information & communication | 2022 |
| CU3D Limited | Information & communication | 2020 |
| Cubed Events Limited | Information & communication | 2024 |
| Cubenary Limited | Information & communication | 2020 |
| Cubicle 7 Entertainment Ltd | Information & communication | 2006 |
| Cubit Estates Ltd | Construction | 2026 |
| Cubit Group Limited | Professional & scientific | 2001 |
| Cuco Creative Limited | Professional & scientific | 2008 |
| Culham Limited | Real estate | 1983 |
| Culinary Haven Ltd | Information & communication | 2025 |
| Cullen BV Limited | Construction | 2021 |
| Cullen FR Limited | Construction | 2021 |
| Cullen Holdings (Poole) Limited | Real estate | 2022 |
| Cullen Homes Limited | Construction | 2016 |
| Cullen Interiors Limited | Professional & scientific | 2024 |