| Cards 4U Limited | Administrative & support | 2011 |
| Carken Limited | Real estate | 2024 |
| Carlou Limited | Transport & logistics | 2025 |
| Carnforth Optical Ltd | Health & social care | 2010 |
| Carolis Limited | Real estate | 2012 |
| Carousel Soft Furnishings Limited | Manufacturing | 2016 |
| Carters I&H Ltd | Wholesale & retail | 2026 |
| Caterepair Limited | Other services | 2009 |
| Cath's Cleaning Services Ltd | Administrative & support | 2020 |
| Cavzon NW Ltd | Hospitality | 2025 |
| Cavzone Ltd | Other services | 2023 |
| CC Commercial (NW) Ltd | Administrative & support | 2024 |
| CCC Inspire Limited | Other services | 2025 |
| Cdit Transport Ltd | Transport & logistics | 2025 |
| CE Properties (North West) Limited | Real estate | 2021 |
| Celia Vlismas Limited | Wholesale & retail | 2002 |
| Central MOT Centre (Darwen) Limited | Wholesale & retail | 2010 |
| Central Vision Optics Limited | Health & social care | 2009 |
| Certi Master Ltd | Professional & scientific | 2023 |
| Certifiedrubbish Ltd | Information & communication | 2025 |
| Chanal Darwen Limited | Information & communication | 2024 |
| Chapman Inveresk Limited | Professional & scientific | 1913 |
| Charger World Ltd | Information & communication | 2025 |
| Charlestown View Management Company Limited | Households | 2021 |
| Chase Templeton Limited | Financial services | 1997 |
| Chat Investments Limited | Manufacturing | 2018 |
| Check IT Yourself Limited | Other services | 2016 |
| Cheltenham and Gloucester Hearing Clinic Ltd | Wholesale & retail | 2021 |
| Cherry Blossom Education Ltd | Health & social care | 2024 |
| Chippies Taxis Limited | Transport & logistics | 2016 |
| Choices the Catalogue Shop Limited | Wholesale & retail | 2003 |
| Chordplay Ltd | Wholesale & retail | 2024 |
| Christian Rose Apparel Limited | Wholesale & retail | 2025 |
| Christiescraft Limited | Wholesale & retail | 2012 |
| Chxtech Ltd | Wholesale & retail | 2025 |
| CIN CIN Darwen Ltd | Hospitality | 2025 |
| Citimart Limited | Wholesale & retail | 2014 |
| Citypark Land LLP | | 2005 |
| Citypark Projects Limited | Real estate | 2002 |
| CJ Artist Development Ltd | Professional & scientific | 2026 |
| CJC Online Commerce Ltd | Wholesale & retail | 2025 |
| Cjmb Limited | Arts & recreation | 2001 |
| CL Vision Limited | Health & social care | 2004 |
| Clamp Optometrists Limited | Health & social care | 2006 |
| Clare Darbyshire Optical Limited | Wholesale & retail | 2021 |
| Clarity Hearing Practice Limited | Wholesale & retail | 2024 |
| Classic Eyes Limited | Health & social care | 2000 |
| Clearearsbylew Limited | Wholesale & retail | 2025 |
| Clearence Wholesale Limited | Wholesale & retail | 2019 |
| Clemington Holdings Ltd | Financial services | 2025 |
| Cleopatra Gifts Limited | Wholesale & retail | 2025 |
| Clifford Benjamin Limited | Health & social care | 2007 |
| Clifton Argyle Limited | Real estate | 2011 |
| Clifton Lawns Ltd | Professional & scientific | 2019 |
| CMA Roofing & Maintenance Ltd | Construction | 2024 |
| CMB Enforcement Ltd | Professional & scientific | 2018 |
| CME Facilities & Leisure Ltd | Hospitality | 2026 |
| CMS Educational Consultancy Services Limited | Education | 2017 |
| Co-Curricular Coaching Limited | Education | 2024 |
| Cocker Services Limited | Transport & logistics | 2004 |
| Colenco Logistics Ltd | Other services | 2013 |
| Collins & Sons Ltd | Real estate | 2023 |
| Collison (Langley) Limited | Wholesale & retail | 2023 |
| Collison Retail Limited | Wholesale & retail | 2023 |
| Colosseum Security Ltd | Administrative & support | 2025 |
| Coloured Stone Driveways Limited | Construction | 2018 |
| Columbo Limited | Health & social care | 2002 |
| Comment Community Interest Company | Professional & scientific | 1998 |
| Commercial Road Limited | Real estate | 2016 |
| Commtech Trading Co. (Lancs) Limited | Wholesale & retail | 2014 |
| Concast Concrete Flooring Ltd | Construction | 2020 |
| Concast Ltd | Construction | 2025 |
| Concept Integrated Systems Limited | Information & communication | 2017 |
| Contact Solutions Limited | Professional & scientific | 2024 |
| Controlla Covers Limited | Manufacturing | 1992 |
| Convenience Stores UK (Blackburn) Limited | Wholesale & retail | 2016 |
| Conveyor Belt Repair Services Ltd | Professional & scientific | 2024 |
| Cookinpellets UK Limited | Wholesale & retail | 1998 |
| Cooper & Barr Ltd. | Health & social care | 1994 |
| Cooper & Leatherbarrow Limited | Health & social care | 1949 |
| Cooper Rigg Limited | Manufacturing | 1983 |
| Corfam Ltd | Financial services | 2016 |
| Cornerstone Trading Limited | Wholesale & retail | 2020 |
| Corpdesign Limited | Wholesale & retail | 2010 |
| Cort Vehicle Contracts Holdings Ltd | Financial services | 2018 |
| Cortex Metering Solutions Limited | Administrative & support | 2020 |
| Costello Comms Ltd | Information & communication | 2024 |
| Cotton Hall Holdings Ltd | Professional & scientific | 2023 |
| Cotton Tree Properties Limited | Real estate | 2015 |
| Cozyhomesinvestments Ltd | Real estate | 2022 |
| CPS Access Ltd | Administrative & support | 2024 |
| Craig Foulds Design and Drafting Services Limited | Professional & scientific | 2013 |
| Cralen Limited | Manufacturing | 2006 |
| Cranberry Fold Court Management Company Limited | Households | 2002 |
| Craven Roofing Limited | Construction | 2018 |
| Crdgillibrand Ltd | Financial services | 2022 |
| Creating Comfort Ltd | Wholesale & retail | 2005 |
| Credit Agreement Solutions Ltd | Professional & scientific | 2007 |
| Crescere Holdings Limited | Professional & scientific | 2023 |
| Critchley Holdings Ltd | Real estate | 2020 |