| College Park (Management Company) Limited | Households | 2024 |
| Collingwood Search and Selection Limited | Professional & scientific | 2005 |
| Columbia Solutions Ltd | Information & communication | 2005 |
| Commercialequipmentsuppliers Ltd | Wholesale & retail | 2024 |
| Company Medical Limited | Health & social care | 2009 |
| Complete Cover Group Limited | Financial services | 1998 |
| Complete-Qsr Consultancy Ltd | Professional & scientific | 2024 |
| Conella Enterprises Ltd | Professional & scientific | 2020 |
| Conference Call Limited | Administrative & support | 2001 |
| Consilia Investments Limited | Financial services | 2013 |
| Construction Renovation & Outdoor Rooms Ltd | Construction | 2020 |
| Construction Stars UK Ltd | Real estate | 2015 |
| Consulting 45 Limited | Professional & scientific | 2015 |
| Contemporary Living Concepts Ltd | Real estate | 2020 |
| Conway Developments (Cheshire) Limited | Wholesale & retail | 1980 |
| Cooke and Jones Physiotherapy Limited | Other services | 2022 |
| Cookie and Bear Ltd | Professional & scientific | 2025 |
| Cormorant Enterprises Ltd | Agriculture & fishing | 2001 |
| Cotebrook Consulting Limited | Administrative & support | 2007 |
| Cotebrook Pre-School Limited | Education | 2021 |
| Cottam Gardens Resident Management Company Limited | Households | 2022 |
| Cotton Woods (Preston) Residents Management Company Limited | Households | 2021 |
| Cowper Properties Limited | Real estate | 2012 |
| CPL Contracts Ltd | Construction | 2019 |
| Craig Rosson Plumbing & Heating Limited | Construction | 2010 |
| Crave Coffee Limited | Manufacturing | 2015 |
| Craven Cottage Consulting Limited | Professional & scientific | 2011 |
| Credos Estates Limited | Real estate | 2021 |
| Credosmanagement Property Ltd | Real estate | 2015 |
| Crest Sportswear International Limited | Real estate | 1940 |
| Cross Fields (Catterall) Residents Management Company Ltd | Households | 2022 |
| Crown Hill View Management Company Limited | Households | 2024 |
| Crystal Clear Financial Limited | Other services | 2019 |
| Crystal Future 001 Limited | Hospitality | 2025 |
| Crystal Future Properties Limited | Real estate | 2018 |
| Crystal Group Holdings Limited | Financial services | 2025 |
| CSC Wifi Ltd | Information & communication | 2023 |
| Culturebox Search Ltd | Administrative & support | 2020 |
| Cybersec Automotive Ltd | Extraterritorial | 2023 |
| Cysgod Y Graig (Dyserth) Management Company Limited | Households | 2019 |
| D & S Properties & Rentals Ltd | Real estate | 2023 |
| D Johnson Solutions Limited | Professional & scientific | 2023 |
| D. S. Thornhill (Rushton) Limited | Agriculture & fishing | 1995 |
| D.A. and F. Consulting Ltd | Wholesale & retail | 2020 |
| Dahlia View Resident Management Company Limited | Households | 2025 |
| Dale House Resident Management Company Limited | Households | 2025 |
| Daleacre Veterinary Services Ltd | Professional & scientific | 2019 |
| Dalmatian Technology Limited | Administrative & support | 2006 |
| Dalton Fields (Chorlton) Resident Management Company Limited | Households | 2025 |
| Daltons Way (Skelmersdale) Residents Management Company Limited | Households | 2019 |
| Danelander Limited | Agriculture & fishing | 2009 |
| Darrian Ltd | Real estate | 2016 |
| Davenport Place Management Company Limited | Households | 2017 |
| David Eaton Associates Ltd | Professional & scientific | 2025 |
| David Starkey Limited | Administrative & support | 2002 |
| Dayinsure Holdco Limited | Financial services | 2021 |
| Dayinsure.Com Limited | Professional & scientific | 2003 |
| DB Enterprises Limited | Hospitality | 2016 |
| Dealsun Limited | Real estate | 1977 |
| Deck Leisure Group Limited | Extraterritorial | 2014 |
| DEE Associates (Business Consultants) Limited | Professional & scientific | 1987 |
| Deepgrove Properties Limited | Real estate | 1973 |
| Definity Aesthetics Ltd | Health & social care | 2018 |
| Delamere Homes Limited | Professional & scientific | 2011 |
| Delamere Nursery Ltd | Education | 2020 |
| Delamere Projects Limited | Construction | 2011 |
| Demo Housing Limited | Real estate | 2017 |
| Dems Investments Ltd. | Administrative & support | 2023 |
| Derivatives Tech Solutions Limited | Information & communication | 2023 |
| Derosa Enterprises Ltd | Real estate | 2025 |
| Designdept Limited. | Professional & scientific | 2001 |
| Designmetrics Studio Ltd | Professional & scientific | 2025 |
| Desoto Productions Ltd | Information & communication | 2014 |
| Dettagli Limited | Wholesale & retail | 2007 |
| Deva Associates Limited | Professional & scientific | 2009 |
| Deva Dog Training Ltd | Other services | 2025 |
| Deva Green Chester Residents Management Company Limited | Households | 2022 |
| DG Property Solutions & Building Ltd | Construction | 2020 |
| Dgcbar&Catering Ltd | Hospitality | 2026 |
| DHM (Tarporley) Limited | Households | 2003 |
| Digital Information Technology Limited | Information & communication | 2000 |
| Discover Property Holdings Ltd | Real estate | 2022 |
| Dogma Group Ltd. | Professional & scientific | 2019 |
| DOL Derwen (Mold) Resident Management Company Ltd | Households | 2026 |
| DOL Derwen (SAB) Management Company Limited | Households | 2026 |
| DON Luigi Limited | Extraterritorial | 2018 |
| Dons Bistro Limited | Hospitality | 2025 |
| Dracan Village Residents Management Company Limited | Households | 2022 |
| Duddon Mews Management Company Limited | Households | 2016 |
| Duncan Vantage | Financial services | 2025 |
| Dustcube Limited | Manufacturing | 2023 |
| DWB Engineering & Fabrication Limited | Manufacturing | 2014 |
| Dynamic Advanced Insights Ltd. | Administrative & support | 2019 |
| E a Newsome Ltd | Wholesale & retail | 2024 |
| E B Accountancy Limited | Professional & scientific | 2013 |
| E Mysteries Ltd | Manufacturing | 2021 |
| E-Channel Solutions Limited | Information & communication | 2007 |
| Eagles Green (Warrington) Residents Management Company Ltd | Households | 2025 |
| Eamont Chase (Penrith) Management Company Limited | Households | 2022 |
| Earls Place (Desford) Management Company Limited | Households | 2021 |