| Coppull Car & Commercial Services Limited | Wholesale & retail | 2016 |
| Coppull Self Storage Limited | Wholesale & retail | 2020 |
| Coppull St.John's Pre-School CIC | Education | 2021 |
| Copthorne Financial Services Ltd | Extraterritorial | 2006 |
| Corbett Plumbing Limited | Construction | 2015 |
| Cord Properties Ltd | Administrative & support | 2023 |
| Cordoba Group Limited | Financial services | 2025 |
| Core Control Solutions Limited | Information & communication | 2008 |
| Core Management (NW) Ltd | Professional & scientific | 2011 |
| Corewise Consultancy Limited | Professional & scientific | 2025 |
| Cornell Group Limited | Construction | 2012 |
| Cornish Native Oysters Ltd | Wholesale & retail | 2018 |
| Cornish Oysters Ltd | Wholesale & retail | 2019 |
| Coronation Southport Ltd | Real estate | 2025 |
| Corpore Limited | Health & social care | 2014 |
| Corrigan Kitchens & Bathrooms Ltd | Construction | 2022 |
| Corsair Valve Services Limited | Manufacturing | 2020 |
| Cosgrove ISW Consultants Ltd | Health & social care | 2022 |
| Coshh LEV Services Limited | Manufacturing | 2017 |
| Cosmetique Aesthetics Limited | Health & social care | 2025 |
| Cosmogonies Limited | Real estate | 2017 |
| Cosmétique North West Ltd | Health & social care | 2016 |
| Costas and Pearson LLP | | 2016 |
| Costello Legal Ltd | Other services | 2023 |
| Cosy Key Property Group Limited | Real estate | 2025 |
| Cosystay Home Rentals Ltd | Real estate | 2022 |
| Cotswold Renovation Specialists Ltd | Construction | 2013 |
| Cottam Properties Ltd | Real estate | 2021 |
| Countrywide Garage Doors Limited | Wholesale & retail | 2006 |
| County Waterwells Drilling Ltd | Construction | 2005 |
| Countyclean Environmental Services Limited | Transport & logistics | 2007 |
| Countyclean Groundworks and Installations Limited | Extraterritorial | 2016 |
| Countyclean Holdings Limited | Financial services | 2014 |
| Countyclean Sweepers Limited | Extraterritorial | 2016 |
| Countyclean Waste Recycling Limited | Water & waste | 2016 |
| Couple PS Ltd | Wholesale & retail | 2025 |
| Course Scale UP Ltd | Information & communication | 2023 |
| Court Proceedings Limited | Public administration | 2010 |
| Couture Girl Limited | Other services | 2015 |
| Cowling Stores Ltd | Wholesale & retail | 2014 |
| Cowshed Treats Ltd | Hospitality | 2021 |
| Cozma Construction Ltd | Manufacturing | 2019 |
| CP Electrical Services North East Ltd | Construction | 2021 |
| CP Systems Limited | Administrative & support | 2009 |
| CP Toys Ltd | Wholesale & retail | 2025 |
| CPK Transport Services Ltd | Transport & logistics | 2013 |
| CPM Adlington Limited | Real estate | 2019 |
| CR Property Services Limited | Real estate | 2023 |
| Crabtrees Craft Pubs and Bottle Merchants Limited | Manufacturing | 2018 |
| Cradel Aviation Ltd | Transport & logistics | 2022 |
| Cradel Haus (Fair Rigg) Ltd | Real estate | 2022 |
| Cradel Haus (Grey Walls) Ltd | Real estate | 2024 |
| Cradel Properties Ltd | Real estate | 2019 |
| Craft Hardwood Ltd | Construction | 2020 |
| Craft RUM Club Limited | Transport & logistics | 2016 |
| Craigchem Limited | Wholesale & retail | 2007 |
| Crandon Mckinstry Construction (SW) Limited | Construction | 2009 |
| Cranford Court (Warrington) Management Company Limited | Professional & scientific | 2008 |
| Craven Hindle Limited | Real estate | 2016 |
| Craven Owen Commercial Services Limited | Real estate | 2026 |
| Craven Owen Property Services Limited | Real estate | 2026 |
| Craven Services (North West) Limited | Other services | 2000 |
| Crawford Wealth Management Limited | Financial services | 2013 |
| Crayford Print Finishers Ltd | Manufacturing | 2011 |
| Crazy Bear Transport Services Ltd | Transport & logistics | 2017 |
| Cream Nominees (NO. 5) Limited | Professional & scientific | 2006 |
| Creations Home and Garden Ltd | Administrative & support | 2015 |
| Creative Design & Workwear Limited | Wholesale & retail | 2008 |
| Creative Individuals Digital Limited | Information & communication | 2018 |
| Creative Toast Limited | Information & communication | 2022 |
| Crichton Capital Ltd | Financial services | 2025 |
| Crimson Foundry Limited | Information & communication | 2011 |
| Crofters Fold Management Company Limited | Real estate | 2007 |
| Crompton Couriers Limited | Transport & logistics | 2016 |
| Crontech Ltd | Construction | 2020 |
| Croppers Control Systems Ltd | Construction | 2002 |
| Crosby Joiners Limited | Construction | 2012 |
| Crossborder Connect Ltd | Wholesale & retail | 2025 |
| Crosses Brow Shop Fitters Limited | | 1974 |
| Crosses Farm Limited | Real estate | 2025 |
| Crossfit UF Ltd | Health & social care | 2015 |
| Crossthwaite Consultancy Ltd. | Other services | 2013 |
| Croston Conservatories Limited | Construction | 2019 |
| Croston Design & Build Limited | Construction | 2023 |
| Croston Financial Services Limited | Financial services | 2023 |
| Croston Garden Studios Limited | Real estate | 2018 |
| Croston Grosvenor Limited | Construction | 2022 |
| Croston Home Improvements Limited | Construction | 2019 |
| Croston Landscapes Limited | Wholesale & retail | 2015 |
| Croston Logistics Limited | Transport & logistics | 2017 |
| Croston Plumbing & Heating Ltd | Construction | 2015 |
| Croston RD Ltd | Real estate | 2025 |
| Crowberry Consulting Limited | Professional & scientific | 2007 |
| Crown & Dial Ltd | Wholesale & retail | 2025 |
| Crown Properties Management Ltd | Real estate | 2023 |
| Crown Stage and Theatre Services Limited | Construction | 1993 |
| Crown Wealth Management Limited | Financial services | 2006 |
| Crozier Design Ltd | Manufacturing | 2020 |
| Crozier Ltd | Transport & logistics | 2025 |
| Crumpsall Stores Limited | Wholesale & retail | 2016 |