| Child Seat Safety Limited | Education | 2011 |
| Chill OUT Vehicle Air Conditioning Ltd | Wholesale & retail | 2020 |
| Chimney Lintels & Building Construction Limited | Construction | 2023 |
| Chlo’S Furry Friends Ltd | Other services | 2024 |
| Chronicles of the Residuum Ltd | Arts & recreation | 2024 |
| Cicely & MAY Limited | Wholesale & retail | 2021 |
| Cindica Limited | Information & communication | 2020 |
| CIR & Forensics Ltd | Administrative & support | 2024 |
| Citium Ltd | Professional & scientific | 2023 |
| Civic Racing Club Ltd | Arts & recreation | 2011 |
| CJ Roofing Solutions Ltd | Construction | 2020 |
| CJJ Hospitality Limited | Hospitality | 2025 |
| CJM Properties NW Ltd | Construction | 2024 |
| Cjmcd Ltd | Construction | 2016 |
| Claire Parker Aesthetics Ltd | Other services | 2020 |
| Clairmont Consulting Limited | Information & communication | 2026 |
| Clare Black Podiatry Ltd | Health & social care | 2015 |
| Claremontlogan Ltd | Wholesale & retail | 2025 |
| Clarke Courier Services Limited | Transport & logistics | 2024 |
| Clarke Group Ltd | Real estate | 2022 |
| Clarke Property & Homes Ltd | Financial services | 2020 |
| Classeys Salon Ltd | Other services | 2022 |
| Clayton Brook Garages Limited | Wholesale & retail | 1996 |
| Clayton Mortgage Solutions Limited | Financial services | 2017 |
| Cleanerswarehouse Limited | Extraterritorial | 2000 |
| Clear Publishing Ltd | Information & communication | 2008 |
| Clearview Home Improvements (Holdings) Limited | Professional & scientific | 2013 |
| Clevedon Monk Ltd | Wholesale & retail | 2025 |
| Climbing Compliance Limited | Professional & scientific | 2019 |
| Cliniq Medical Ltd | Health & social care | 2026 |
| Clive Hurt (Holdings) Limited | Professional & scientific | 2003 |
| CLM PR Ltd | Financial services | 2021 |
| Cloud Desserts Ltd | Hospitality | 2025 |
| CLR Brickwork Ltd | Construction | 2012 |
| Club Equestrian Limited | Arts & recreation | 2009 |
| Clubpro Ltd | Manufacturing | 2025 |
| CMA Training (UK) Limited | Other services | 2010 |
| CMN Software Ltd | Information & communication | 2017 |
| CNP Telecoms Ltd | Construction | 2023 |
| Co Home Improvements Limited | Construction | 2008 |
| Coat of Many Colours Tattoos Limited | Arts & recreation | 2020 |
| Cocker Bar Orchard Limited | Agriculture & fishing | 2025 |
| Cojs Corporation Limited | Wholesale & retail | 2021 |
| COL Welding & Fabrication Ltd | Manufacturing | 2026 |
| Collective MCR Ltd | Administrative & support | 2011 |
| Columbus Cleaning Machines Limited | Wholesale & retail | 2011 |
| Comfy Spaces Ltd | Real estate | 2021 |
| Commercial Business Automation Ltd | Information & communication | 2020 |
| Commercial Business Communications Ltd | Information & communication | 2015 |
| Commercial Business Equipment Limited | Administrative & support | 1989 |
| Commercial Business Group Ltd | Financial services | 2025 |
| Commercial Business Properties Ltd | Real estate | 2025 |
| Commercial Business Systems Ltd | Information & communication | 2025 |
| Communitec Ltd | Information & communication | 2007 |
| Community Network and Outreach Service CIC | Hospitality | 2020 |
| Comp Lair Ltd | Wholesale & retail | 2020 |
| Company Tackle Limited | Wholesale & retail | 2012 |
| Compounding Holdings Ltd | Financial services | 2026 |
| Con-Fused Electrical Limited | Energy | 2010 |
| Concert Living Limited | Construction | 2017 |
| Condor Couriers PAY Limited | Administrative & support | 2021 |
| Condor Dairies Ltd | Transport & logistics | 2021 |
| Connell Construction Services Ltd | Construction | 2022 |
| Construction & Landscaping Ltd | Construction | 2020 |
| Construction Management Solutions 2022 Ltd | Construction | 2022 |
| Contour Beauty LAB Academy Ltd | Health & social care | 2026 |
| Contrast Entertainment Ltd | Arts & recreation | 2023 |
| Conway Power Ltd | Construction | 2025 |
| Cooke Capital Estates Ltd | Construction | 2024 |
| Cooke Capital Properties Ltd | Construction | 2024 |
| Cooper Barton Ltd | Professional & scientific | 2015 |
| Cooper Property (Lancashire) Limited | Real estate | 2020 |
| Core Speech Ltd | Health & social care | 2023 |
| Cosmetic Supplies Ltd | Wholesale & retail | 2019 |
| Cotton Court (Leyland) Limited | Real estate | 2023 |
| Cotton Group (NW) Limited | Administrative & support | 2025 |
| Countrywide Equity Release Limited | Financial services | 2020 |
| Courageous Productions CIC | Manufacturing | 2024 |
| Coxhead Electrical Services Ltd | Construction | 2015 |
| CP Neuropsychology Ltd | Health & social care | 2024 |
| CPH Financial Services Limited | Financial services | 2018 |
| CPS Fencing Ltd | Construction | 2018 |
| CR Consult Limited | Administrative & support | 2016 |
| Cr&S Holdings Limited | Financial services | 2026 |
| Creotempus Ltd | Manufacturing | 2014 |
| Crescent Grove Ltd | Wholesale & retail | 2025 |
| Crimson 3 Ltd | Hospitality | 2026 |
| Crispy Fried Leyland Ltd | Hospitality | 2022 |
| Croft Bakery Limited | Hospitality | 2012 |
| Crosbieconstruction Ltd | Construction | 2017 |
| Crossfit Leyland Ltd | Arts & recreation | 2018 |
| Croston Acorns Limited | Education | 2008 |
| Croston Cafe Ltd | Hospitality | 2025 |
| Croston Construction Limited | Construction | 2025 |
| Croston Corn Mill Limited | Manufacturing | 1984 |
| Croston Feather and Twigs Limited | Wholesale & retail | 2021 |
| Croston Fencing Ltd | Construction | 2019 |
| Croston Hall Farm Limited | Agriculture & fishing | 2020 |
| Croston Medical Services Limited | Health & social care | 2011 |
| Croston Old School | Real estate | 1998 |