| Calm Wave Property Services Ltd | Households | 2025 |
| Cambridge DX Limited | Health & social care | 2014 |
| Candour Care Franchising Opportunities Ltd | Administrative & support | 2022 |
| Candour Care Group Ltd | Education | 2019 |
| Capital Concierge Limited | Extraterritorial | 2019 |
| Car Finance Deals (Cheshire) Limited | Financial services | 2018 |
| Cars Excel Ltd | Wholesale & retail | 2024 |
| Carters Pharma Consultancy Ltd | Wholesale & retail | 2025 |
| Cavehill Consulting Group Ltd | Administrative & support | 2014 |
| CCS Dryline Ltd | Construction | 2025 |
| Cee's Kitchen Ltd | Hospitality | 2024 |
| Central Stone Worktops Limited | Manufacturing | 2024 |
| CES Associates Ltd | Professional & scientific | 2017 |
| Chai SUI GUY Ltd | Hospitality | 2026 |
| Cheeky Thai Ltd | Hospitality | 2022 |
| Cheler Transport Ltd | Transport & logistics | 2025 |
| Chelsi’S Baps Limited | Hospitality | 2025 |
| Cheshire Ceilings and Partitions Ltd | Construction | 2018 |
| Chris Willis and Sons Limited | Transport & logistics | 2020 |
| City Contract Services UK Limited | Professional & scientific | 2007 |
| Civic Trust Awards Community Interest Company | Professional & scientific | 2009 |
| Cjohn Holdings Limited | Financial services | 2018 |
| CJS Property Group Limited | Real estate | 2026 |
| CK Clearances Ltd | Other services | 2018 |
| CK Optical Ltd | Wholesale & retail | 2026 |
| Clarify Consultancy Ltd | Administrative & support | 2018 |
| Clear Vision Cleaning (North West) Ltd | Administrative & support | 2005 |
| Clearpoint Analytics Ltd | Information & communication | 2026 |
| Click & Crust Ltd | Hospitality | 2025 |
| Clinically Flawless Ltd | Health & social care | 2022 |
| Close Nutrition (Newton) Limited | Other services | 2014 |
| Close Tool Company Ltd | Wholesale & retail | 2025 |
| CNP Property Ltd | Real estate | 2026 |
| Coachedbyjoel Ltd | Education | 2026 |
| CODE32 Limited | Information & communication | 2019 |
| Combustion Clinic Limited | Wholesale & retail | 2024 |
| Commercial Breakdown Services Limited | Manufacturing | 2019 |
| Compass Development (UK) Ltd | Wholesale & retail | 2011 |
| Complete Aesthetics Ltd | Other services | 2025 |
| Complete Nutrition Factory Ltd | Wholesale & retail | 2021 |
| Complete Skills Solutions Limited | Education | 2014 |
| Concept Property UK (NO2) Limited | Extraterritorial | 2024 |
| Concept Property UK Limited | Real estate | 2014 |
| Concept Property UK Management Limited | Real estate | 2024 |
| Connect Education and Training C.I.C. | Education | 2022 |
| Control ALC Delete Ltd | Information & communication | 2019 |
| Cowley Civils & Mechanical Installations Ltd | Construction | 2026 |
| Cranfield Heating & GAS Ltd | Construction | 2022 |
| Creative 425 Ltd | Professional & scientific | 2024 |
| Crewe Plant Hire Limited | Extraterritorial | 2013 |
| CRS Cleaning Consultants Ltd | Administrative & support | 2025 |
| Crumb of Comfort Ltd | Wholesale & retail | 2025 |
| Crystalcare Cleaning Services Ltd | Administrative & support | 1984 |
| CT Rendering Solutions Ltd | Construction | 2026 |
| CTR Associates Limited | Professional & scientific | 2019 |
| Cupid's Pizza Ltd | Wholesale & retail | 2026 |
| Custom House Cabinetry Limited | Manufacturing | 2021 |
| Custom House Kitchens Ltd | Manufacturing | 2026 |
| CVR Diagnostics Limited | Wholesale & retail | 2021 |
| D & I Property Developments Ltd | Real estate | 2017 |
| D K B Agri-Services Limited | Administrative & support | 2017 |
| D&J Security Service's Limited | Administrative & support | 2025 |
| D. & B. Training Limited | Education | 1989 |
| Darbyshire's Property Limited | Real estate | 2022 |
| Darbyshire's Property Services Ltd | Construction | 2021 |
| Davanti Tyres Limited | Manufacturing | 2014 |
| Davanti World Limited | Wholesale & retail | 2015 |
| Dawns Bars 2024 Ltd | Hospitality | 2024 |
| Dayla Liquid Packing Limited | Extraterritorial | 1958 |
| DBM Pipelines Ltd | Construction | 2023 |
| DC Construction Management Services Ltd | Professional & scientific | 2024 |
| DC Dry-Lining Ltd | Construction | 2026 |
| DCP Investments Ltd | Real estate | 2025 |
| Deirfiúr Ltd | Real estate | 2024 |
| Deluxsyl Ltd | Wholesale & retail | 2025 |
| Delyth's Designer Knits Ltd | Manufacturing | 2016 |
| Desert Aromas Ltd | Wholesale & retail | 2025 |
| DG Early Years Ltd | Education | 2022 |
| Diamond Roofing Property Ltd | Construction | 2026 |
| Diamond State Collectables Ltd | Wholesale & retail | 2025 |
| Diamond Travel Minibus Ltd | Transport & logistics | 2022 |
| Diamond Trees & Landscaping Ltd | Administrative & support | 2025 |
| Diamondback Cards Ltd | Wholesale & retail | 2024 |
| Direct Fire & Security Limited | Professional & scientific | 2012 |
| Direct Fire Alarms Limited | Professional & scientific | 2008 |
| Direct Fire Limited | Professional & scientific | 2008 |
| Direct Fire Protection Ltd | Professional & scientific | 2005 |
| DJ Drink Solutions Limited | Wholesale & retail | 2006 |
| Doherty Aggregates Limited | Extraterritorial | 2010 |
| Donlan’S Plant Ltd | Construction | 2025 |
| Doran & Stow Properties Ltd | Real estate | 2026 |
| Dove Property Ventures Ltd | Real estate | 2024 |
| Dram Fine Drinks Limited | Wholesale & retail | 2025 |
| Drinkworthy Ltd | Wholesale & retail | 2020 |
| DT Health and Sports Ltd | Wholesale & retail | 2026 |
| E.S.B Solutions Limited | Real estate | 2009 |
| Eagle EYE Secure Ltd | Administrative & support | 2025 |
| Earlestown Hand Car Wash Limited | Administrative & support | 2025 |
| Earlstown Tandoori Ltd | Hospitality | 2019 |
| EBP Property Sourcing Ltd | Households | 2017 |