| Crescent Services (TPS) Limited | Professional & scientific | 2016 |
| Crescent-Red Dragon Limited | Hospitality | 2021 |
| Crestbrook Investments Limited | Extraterritorial | 2010 |
| Crestdene Limited | Real estate | 2015 |
| Crewe Retail Holdings Limited | Other services | 2023 |
| CRH Accounting Ltd | Professional & scientific | 2021 |
| CRM Hdgs Limited | Professional & scientific | 2013 |
| CRM Trading Limited | Wholesale & retail | 1982 |
| Croasdell W Limited | Wholesale & retail | 2016 |
| Crofters Mews Nominees Ltd | Real estate | 2025 |
| Croftwerk Limited | Administrative & support | 2013 |
| Cromarty Square Greental Investments Ltd | Real estate | 2021 |
| Cromwell 30 Ltd | Real estate | 2026 |
| Cromwell Offices Ltd | Real estate | 2018 |
| Crops Fast Ltd | Professional & scientific | 2019 |
| Crossbow Holdings Limited | Professional & scientific | 2017 |
| Crossbow Ventures Limited | Real estate | 2015 |
| Crown Essential Service Ltd | Real estate | 2020 |
| Crown Oak Holdings Ltd | Real estate | 2017 |
| Crown Support Ltd | Information & communication | 2022 |
| Crownbiolife Supplies Ltd | Wholesale & retail | 2026 |
| Crownedge Support Services Limited | Transport & logistics | 2024 |
| CRS Insurance Brokers Ltd | Extraterritorial | 2022 |
| Crumpsall Community Centre 2 Ltd | Professional & scientific | 2022 |
| Crumpsall Community Centre Ltd | Extraterritorial | 2022 |
| Cruspedin Limited | Extraterritorial | 2018 |
| Crystal Healing Wear Ltd | Wholesale & retail | 2019 |
| Crystal Real Estate Ltd | Construction | 2021 |
| CS Innovations Ltd | Information & communication | 2017 |
| Csbp Limited | Wholesale & retail | 2025 |
| CSD Ventures Ltd | Information & communication | 2012 |
| CSF Partners Limited | Professional & scientific | 2020 |
| CSH Estates Ltd | Real estate | 2026 |
| CSM (United Kingdom) Pension Scheme Trustee Limited | Financial services | 2001 |
| CST Advisory Services Ltd | Information & communication | 2009 |
| Ctalk Limited | Information & communication | 2009 |
| CTM Building Services Ltd | Construction | 2013 |
| CTM Property Limited | Real estate | 1989 |
| CTR Automation Limited | Professional & scientific | 2025 |
| CTS Estates Ltd | Real estate | 2022 |
| Cube Commercial (NW) Ltd | Real estate | 2011 |
| Cubes Bar & Restaurant Ltd | Hospitality | 2018 |
| Cubespace Ltd | Real estate | 2024 |
| Cubicworks Ltd | Construction | 2019 |
| Cuddling Sleep Ltd | Manufacturing | 2026 |
| Culcheth Day Nursery Limited | Education | 2009 |
| Cullen Linen Ltd | Wholesale & retail | 2026 |
| Cullfax Estates Ltd | Real estate | 2025 |
| Cult & Coffee Ltd | Hospitality | 2018 |
| Cult Grooming Limited | Other services | 2018 |
| Cult Management Limited | Professional & scientific | 2018 |
| Cult N Coffee Limited | Hospitality | 2025 |
| Cult Sounds Limited | Information & communication | 2025 |
| Culthair Ltd | Other services | 2025 |
| Culturaland Limited | Administrative & support | 2024 |
| Culture Analytics Ltd | Professional & scientific | 2024 |
| Culture Vultures Limited | Extraterritorial | 2026 |
| Cumbernauld Estates Limited | Real estate | 2011 |
| Cumstead Limited | Extraterritorial | 2000 |
| Cunard Development Limited | Extraterritorial | 2011 |
| Curated by CMD Ltd | Hospitality | 2023 |
| Curly GAL Chlo Ltd | Other services | 2025 |
| Current Flow Electrics Ltd | Other services | 2025 |
| Curry Sauce Media Limited | Information & communication | 2026 |
| Custify Ltd | Wholesale & retail | 2026 |
| Customer Enquiries Service Ltd | Professional & scientific | 2025 |
| Cute Cleanserv Ltd | Transport & logistics | 2024 |
| Cutting Edge Innovations Ltd | Information & communication | 2025 |
| CVI Ltd | Wholesale & retail | 2013 |
| Cvnvc Ltd | Wholesale & retail | 2020 |
| CW Roberts Advisory Limited | Professional & scientific | 2023 |
| CWC (East Cheshire & Staffs) Limited | Administrative & support | 2018 |
| CWY Consultants (UK) Limited | Professional & scientific | 2025 |
| Cyberdiganga Consulting Limited | Information & communication | 2025 |
| Cyberspot Events LLP | | 2026 |
| CYC Vapes Ltd | Wholesale & retail | 2023 |
| Cycle Waggle Ltd | Administrative & support | 2014 |
| CYL Pet Trading Limited | Wholesale & retail | 2025 |
| Cymide Ltd | Information & communication | 2025 |
| Cyrionixstudio Ltd | Information & communication | 2024 |
| CYT Estates Ltd | Real estate | 2023 |
| D & a Fabrications Ltd. | Other services | 1995 |
| D & K Electrical Limited | Construction | 2017 |
| D Beasley Consulting Limited | Professional & scientific | 2021 |
| D Hollyman Limited | Professional & scientific | 2025 |
| D Kerrigan Steel Erection, Rigging and Lifting Ltd | Construction | 2025 |
| D M Controls Limited | Professional & scientific | 2013 |
| D Olive's Kitchen Ltd | Manufacturing | 2025 |
| D P Specialist Property Ltd | Professional & scientific | 2024 |
| D T Garden Services Limited | Administrative & support | 2018 |
| D W Roofing N/W Ltd | Construction | 2023 |
| D Z Software Ltd | Information & communication | 2025 |
| D&A NW Ltd | Health & social care | 2021 |
| D&B Motor Factors Ltd | Wholesale & retail | 1999 |
| D&C Estates Ltd | Extraterritorial | 2014 |
| D&D Construction Management Ltd | Professional & scientific | 2019 |
| D&F Drylining & Fire Protection Ltd | Construction | 2026 |
| D&S Installations Ltd | Construction | 2023 |
| D.S.I. Costs Lawyers Limited | Real estate | 2014 |
| D2 Capital Group Limited | Real estate | 2023 |