| Cheshirekatstyle Ltd | Wholesale & retail | 2025 |
| Chetwode Motors Limited | Wholesale & retail | 1979 |
| Chevron Cars Limited | Manufacturing | 2006 |
| Chilopozie Global Ltd | Education | 2023 |
| Chilton Property Services Limited | Construction | 2018 |
| Chiman Ltd | Real estate | 2025 |
| Chinagreat Limited | Health & social care | 2006 |
| Chistar Ltd | Extraterritorial | 2021 |
| CHL Advisory Services LLP | | 2026 |
| Cholet Holdings Limited | Administrative & support | 2024 |
| Cholmondeley Investments Limited | Real estate | 2016 |
| Chorlton Gardens Management Company Limited | Households | 2025 |
| Chorlton Hall Court Management Company Limited | Households | 2005 |
| Chowchow Nation Ltd | Wholesale & retail | 2026 |
| Chris Booth Construction Ltd | Construction | 2024 |
| Chris Leigh Brickwork Ltd | Construction | 2003 |
| Chrisbukem Limited | Hospitality | 2025 |
| Chrysalis Rail LLP | | 2009 |
| Chrysalis Rail Services Limited | Manufacturing | 2010 |
| Chug & Cheer Ltd | Hospitality | 2025 |
| Chungs Heating and Plumbing Limited | Construction | 2024 |
| Church Gate (Audlem) Residents Company Limited | Households | 2001 |
| Church Walks Llandudno Limited | Hospitality | 2019 |
| CI Media Ltd | Professional & scientific | 2016 |
| Cinelodge Films Ltd | Information & communication | 2022 |
| Cing Edward Street Car Wash Ltd | Wholesale & retail | 2019 |
| Circlify CIC | Information & communication | 2026 |
| CIS Polystyrene & Foam Limited | Extraterritorial | 2022 |
| Cisticola Group Limited | Wholesale & retail | 2023 |
| Citi-Bridge Technical Company Limited | Information & communication | 2026 |
| Citronne Chemicals Ltd | Wholesale & retail | 2024 |
| City Aesthetics Chester Limited | Health & social care | 2016 |
| City and Rural Fibre Services Limited | Construction | 2025 |
| City Partnership Property Management Limited | Real estate | 2002 |
| Cityserver Limited | Extraterritorial | 2019 |
| Civils & Environmental Ltd | Construction | 2022 |
| CJ Freelance Limited | Transport & logistics | 2021 |
| Cj's Sandwich Cafe Limited | Hospitality | 2025 |
| CJH Engineering Services Ltd | Manufacturing | 2016 |
| Cjnt Ltd | Wholesale & retail | 2018 |
| Cjntech Ltd | Wholesale & retail | 2019 |
| CJS Construction and Aggregate Limited | Construction | 2020 |
| CK Special Gases Limited | Extraterritorial | 2020 |
| CKB Maintenance Ltd | Construction | 2024 |
| Claesson Consultancy Ltd | Professional & scientific | 2019 |
| Claim Simple Ltd | Financial services | 2018 |
| Claire Chambers Ltd | Arts & recreation | 2021 |
| Claire Roberts Optical Services Limited | Health & social care | 1999 |
| Claires Beauty Boxx Limited | Other services | 2014 |
| Clarise Care Limited | Health & social care | 2025 |
| Claritex Accounting Ltd | Professional & scientific | 2025 |
| Clarity Plumbing and Heating Ltd | Construction | 2022 |
| Clark Property Rentals Limited | Real estate | 2022 |
| Clarke Investment Group Ltd | Financial services | 2021 |
| Clarke Optimal Services Ltd | Professional & scientific | 2009 |
| Clay and Blossom Limited | Wholesale & retail | 2011 |
| Clay Holdco Limited | Other services | 2024 |
| Clayton EHS Services Ltd | Professional & scientific | 2014 |
| Clean Driving Ltd | Administrative & support | 2019 |
| Clean Sweep (Cheshire) Limited | Water & waste | 2011 |
| Cleaneeze Limited | Other services | 2025 |
| Cleaning Band Ltd | Administrative & support | 2019 |
| Clear Investment Solutions Limited | Financial services | 2011 |
| Clickers Construction Ltd | Construction | 2022 |
| Clickers Holdings Ltd | Financial services | 2025 |
| Clickers Rail Ltd | Construction | 2025 |
| Cliffe Packaging Limited | Administrative & support | 2003 |
| Clifford Platt Holdings Limited | Extraterritorial | 2024 |
| Clifford UK Management Limited | Professional & scientific | 2014 |
| Climate Group Limited | Administrative & support | 2007 |
| Climate Maintenance Services Limited | Extraterritorial | 2016 |
| Climate Mechanical Services Limited | Administrative & support | 2003 |
| Climate Projects Limited | Construction | 2016 |
| Climatic Ventilation Limited | Manufacturing | 2014 |
| Cliniq Digital Ltd | Information & communication | 2026 |
| Cllnt Co Ltd | Administrative & support | 2025 |
| Cloud Base Ltd | Administrative & support | 2018 |
| Cloud Craving Ltd | Hospitality | 2025 |
| Cloud Nine 97 Ltd | Other services | 2026 |
| Cloud Nine Creator Network Ltd | Professional & scientific | 2024 |
| Cloud Printing Solutions Ltd | Wholesale & retail | 2014 |
| Cloudsteps Limited | Information & communication | 2009 |
| Clover Croft PP Ltd | Real estate | 2023 |
| Clover Solutions Limited | Information & communication | 2011 |
| CMC Chester Limited | Hospitality | 2009 |
| CMK Driving School Ltd | Education | 2014 |
| CMKPROPERTIES247 Ltd | Real estate | 2026 |
| CML Global Limited | Financial services | 2025 |
| CMR Demolitions Limited | Water & waste | 2001 |
| CNO Limited | Other services | 2021 |
| Coatings Holdings (Wirral) Limited | Financial services | 2018 |
| Coatings Limited | Construction | 2015 |
| Cobridge Brick and Marl Company Limited(The) | Construction | 1893 |
| Coco CHI Ltd | Health & social care | 2016 |
| Coco Mama Limited | Other services | 2023 |
| Code Audio Visual Limited | Administrative & support | 2011 |
| Codigx Limited | Wholesale & retail | 2024 |
| Coffea Marco Limited | Wholesale & retail | 2024 |
| Cogen Holdings Limited | Professional & scientific | 2016 |
| Cogent Invest Limited | Real estate | 2016 |