| Coreandcorners Ltd | Wholesale & retail | 2025 |
| Corestone Properties Ltd | Real estate | 2025 |
| Cormac Thompson Music Ltd | Information & communication | 2023 |
| Corner a Limited | Wholesale & retail | 2020 |
| Corner Local Ltd | Wholesale & retail | 2025 |
| Cornerstone Properties (Lancs) Ltd | Real estate | 2017 |
| Corporate Facilities Ltd | Information & communication | 2024 |
| Corporate Hospitality Solutions Ltd | Hospitality | 2022 |
| Corris Travel Limited | Administrative & support | 2013 |
| Cortex Systems Limited | Information & communication | 2026 |
| Corvo Homeware Limited | Wholesale & retail | 2025 |
| Costly DIY Ltd | Information & communication | 2025 |
| Cosy Corner Cafe Bury Limited | Hospitality | 2025 |
| Cott's Property Ltd | Real estate | 2025 |
| Cottage Fish Company Limited | Hospitality | 2013 |
| Cotterill Transport Limited | Transport & logistics | 2026 |
| Cottontown Cat Limited | Professional & scientific | 2022 |
| Coulthard Construction Limited | Construction | 2014 |
| Counsellor Limited | Education | 2023 |
| Counter Crime Intelligence Organization Ccio | Professional & scientific | 2023 |
| Country Care (Nafferton) Ltd | Health & social care | 2012 |
| Countrywide Accountancy Solutions Ltd | Professional & scientific | 2013 |
| Countrywide Legal Solutions Limited | Other services | 2013 |
| County Lawns and Trees Limited | Administrative & support | 2020 |
| Courier Solutions Ltd | Transport & logistics | 2025 |
| Courmacs Legal Ltd | Professional & scientific | 2021 |
| Courmacs SPV1 Ltd | Other services | 2022 |
| Courtenay Property Group Ltd | Real estate | 2025 |
| Cove & Compass Limited | Professional & scientific | 2024 |
| Coventure Capital Ltd | Financial services | 2025 |
| Cover Developments Ltd | Real estate | 2026 |
| COW Corner Bar Ltd | Hospitality | 2023 |
| Cowan Brae Flats Management Company Limited | Households | 1987 |
| Cowell's Developments Limited | Construction | 2025 |
| Cowley Brook Development Ltd | Construction | 2025 |
| Cozyclip Barbers Limited | Other services | 2024 |
| CP Consult Ltd | Professional & scientific | 2025 |
| CPS Blackburn Limited | Other services | 2011 |
| CR Hutchinson Property Ltd | Real estate | 2025 |
| CR Services Group Limited | Financial services | 2024 |
| CR Services North West Limited | Administrative & support | 2015 |
| Craftextiles Ltd | Manufacturing | 2021 |
| Crafty Crafts International Ltd | Other services | 2020 |
| Craig Barnes Limited | Construction | 2005 |
| Crathorne Medical Limited | Wholesale & retail | 2012 |
| Crawley Chemists Limited | Wholesale & retail | 1953 |
| Crazy Crackers Ltd | Health & social care | 2000 |
| Crcars Ltd | Transport & logistics | 2025 |
| CRE8 Contractors Limited | Construction | 2017 |
| CRE8ABILITY Community Interest Company | Education | 2020 |
| Creamz Original Limited | Manufacturing | 2013 |
| Creamzmarketplace Ltd | Wholesale & retail | 2025 |
| Creaon Limited | Information & communication | 2026 |
| Creative LAB Learning Ltd | Administrative & support | 2022 |
| Creative Mindset Company Ltd | Education | 2024 |
| Creative Muslim Minds Ltd | Wholesale & retail | 2020 |
| Creative Upholstery Products Ltd | Manufacturing | 2006 |
| Creed Care Services Ltd | Administrative & support | 2023 |
| Creed Security Services Limited | Administrative & support | 2024 |
| Creo Services Limited | Professional & scientific | 2003 |
| Crep Shack Ltd | Wholesale & retail | 2026 |
| Crepslocker Limited | Wholesale & retail | 2017 |
| Crepslocker Retail Ltd | Wholesale & retail | 2021 |
| Crescent Invest Ltd | Professional & scientific | 2023 |
| Cresco Care Limited | Health & social care | 2024 |
| Crew Cuts Ltd | Other services | 2024 |
| CRIB5 Ltd | Manufacturing | 2025 |
| Cribco Ltd | Wholesale & retail | 2021 |
| Cristex Composite Materials Ltd | Extraterritorial | 2015 |
| Cristex Limited | Wholesale & retail | 1990 |
| Cristex Thermal Products Limited | Wholesale & retail | 2003 |
| Croft Commercials Limited | Wholesale & retail | 2018 |
| Croft Commercials Transport Limited | Wholesale & retail | 2019 |
| Croft Design Ltd | Information & communication | 2008 |
| Crofthead Hydroelectricity Limited | Energy | 2013 |
| Cromptonmhh Ltd | Hospitality | 2025 |
| Cromwell College | Education | 2023 |
| Cromwell Universite Ltd | Education | 2012 |
| Cross Axes (Great Harwood) PUB Ltd | Hospitality | 2025 |
| Crossgates Property Limited | Real estate | 2018 |
| Crosshill Commercial Services Limited | Professional & scientific | 2002 |
| Crosshill Tennis Club Limited | Real estate | 2003 |
| Croston Services Ltd | Administrative & support | 2020 |
| Crown Blinds Limited | Manufacturing | 2005 |
| Crumbssss Limited | Hospitality | 2022 |
| Crunchy Plus Chicken & Pizza Bar KI Ltd | Hospitality | 2023 |
| Cruse Management Services Ltd | Professional & scientific | 2007 |
| Crush and Go Limited | Construction | 2021 |
| Crust N Grill Holdings Ltd | Other services | 2024 |
| Crust N Grill Ltd | Hospitality | 2024 |
| Crust Prep Ltd | Hospitality | 2022 |
| Crusteez Ltd | Wholesale & retail | 2025 |
| Cruwys Ball Farm Limited | Administrative & support | 2021 |
| Cruwys Ball Holdings Limited | Hospitality | 2021 |
| Crux Nutrition Limited | Wholesale & retail | 2024 |
| CRUZE56 Travel Limited | Administrative & support | 2025 |
| Cryo Distribution Ltd | Wholesale & retail | 2019 |
| Cryo Elements Limited | Health & social care | 2018 |
| Crypto Estate Accounting Ltd | Professional & scientific | 2025 |
| Crystal Juice Limited | Wholesale & retail | 2023 |