| Creative Innovations Solutions Ltd | Administrative & support | 2011 |
| Creative PA Limited | Administrative & support | 2012 |
| Creator’Z Limited | Hospitality | 2024 |
| Credicure Ltd | Wholesale & retail | 2023 |
| Crediweigh Ltd | Administrative & support | 2023 |
| Crescenttact Ltd | Administrative & support | 2019 |
| Crook-Davies Holdings Limited | Financial services | 2021 |
| Crook-Davies Ltd | Financial services | 2019 |
| Cropeciux Ltd | Wholesale & retail | 2021 |
| Croplants Ltd | Administrative & support | 2019 |
| Cross Keys Systems Limited | Financial services | 2016 |
| Crossfire Properties Limited | Real estate | 2004 |
| Crossley Axminster UK Limited | Extraterritorial | 2014 |
| Crown Precision Engineering Limited | Manufacturing | 1996 |
| Crownoakes Engineering Limited | Administrative & support | 2008 |
| Crucial Flooring Solutions Ltd | Construction | 2014 |
| Cryomine Ltd | Administrative & support | 2023 |
| Crypto Analyst Limited | Information & communication | 2024 |
| Crystal Biedronka Limited | Wholesale & retail | 2024 |
| Crystal Care Resolutions Limited | Health & social care | 2020 |
| Crystal Heart Clinics Limited | Health & social care | 2001 |
| Csar Group Ltd | Wholesale & retail | 2025 |
| CSJ Brooks Property Holdings Limited | Administrative & support | 2021 |
| CSJ Property Investments Limited | Real estate | 2026 |
| Ctkh Limited | Financial services | 2020 |
| Cube Pharmacy Limited | Wholesale & retail | 2008 |
| CUE & Brew Limited | Arts & recreation | 2010 |
| Cuelogic Ltd | Information & communication | 2025 |
| Cuervore Ltd | Administrative & support | 2023 |
| Cursedrealms Ltd | Transport & logistics | 2019 |
| Cushy Design Limited | Professional & scientific | 2024 |
| Cushy Group Limited | Financial services | 2024 |
| Customcravings Ltd | Transport & logistics | 2019 |
| Customer Outreach Solutions Ltd | Administrative & support | 2024 |
| Customer Quality Consulting Limited | Information & communication | 2018 |
| CUTS4SCRUFFS Limited | Other services | 2017 |
| Cwmerfyn Ltd | Hospitality | 2022 |
| Cyril James Ltd | Real estate | 2020 |
| D Flowers Roofing Limited | Construction | 2026 |
| D H Commercials (Leasing) Ltd. | Wholesale & retail | 1991 |
| D H Landscaping and Driveways Limited | Professional & scientific | 2025 |
| D J F Roofing Services Limited | Construction | 2009 |
| D J Hinton & Co Limited | Water & waste | 2002 |
| D K K Engineering Limited | Professional & scientific | 2018 |
| D&D Transporter Ltd | Transport & logistics | 2019 |
| D.A.D.R Creations Ltd | Information & communication | 2025 |
| D.C.M TM Services Ltd | Other services | 2020 |
| D.F.C. Midlands Ltd. | Wholesale & retail | 1992 |
| D.T Property Kidderminster Ltd | Real estate | 2026 |
| Dabraders Ltd | Wholesale & retail | 2023 |
| Dabrazith Ltd | Wholesale & retail | 2023 |
| Daedaemon Ltd | Wholesale & retail | 2019 |
| DAG (MAN With a Van) Limited | Transport & logistics | 2025 |
| DAG Waste Removal Services Limited | Water & waste | 2026 |
| Damafalls Care and Medical Ltd | Health & social care | 2023 |
| Dane Enterprise Limited | Hospitality | 2026 |
| Danicom Ltd | Hospitality | 2019 |
| Daniel JEW Architect Ltd | Professional & scientific | 2019 |
| Danny Phillips Roofing Ltd | Construction | 2021 |
| Danza Limited | Public administration | 2024 |
| DAP 23 Ltd | Information & communication | 2024 |
| Darbatron Limited | Professional & scientific | 2020 |
| Darcies Moving Solutions Ltd | Transport & logistics | 2025 |
| Darcy Climate Services Ltd | Energy | 2022 |
| Darkhammertech Ltd | Transport & logistics | 2019 |
| Darlore Ltd | Wholesale & retail | 2023 |
| Dash Security Systems Limited | Administrative & support | 2024 |
| DAV Transport Ltd | Transport & logistics | 2018 |
| Dave Elliott Ltd | Construction | 2016 |
| Davelderzy Ltd | Wholesale & retail | 2023 |
| David a Larkins Limited | Transport & logistics | 2023 |
| David Gravatte Services Ltd | Information & communication | 2011 |
| David Hall AGA Services Limited | Manufacturing | 2005 |
| David John Salt Limited | Extraterritorial | 2024 |
| David Lewis Medicolegal Ltd | Health & social care | 2026 |
| David Morris Sporting Ltd | Arts & recreation | 2016 |
| Davies Property Development (WM) Ltd | Construction | 2026 |
| Davies Skip Hire Limited | Water & waste | 2024 |
| Daviso Ltd | Wholesale & retail | 2025 |
| Dawlinzy Ltd | Administrative & support | 2023 |
| Daymark Limited | Manufacturing | 1974 |
| Dazzlin Cleaning Limited | Arts & recreation | 2025 |
| DBS Portfolio Limited | Real estate | 2018 |
| DBS Properties Ltd | Real estate | 1924 |
| DCA Equipment Ltd | Hospitality | 2008 |
| Dchm Property Limited | Extraterritorial | 2022 |
| Dcworks Limited | Professional & scientific | 2020 |
| DDB Building Contractors Ltd | Construction | 2011 |
| DDM Windows Limited | Construction | 2003 |
| DE Beers Garden Design Ltd | Other services | 2022 |
| DE Fault Games Ltd | Information & communication | 2025 |
| DE VAL Pipeline Solutions Ltd | Wholesale & retail | 2026 |
| Deansford Consultants Limited | Wholesale & retail | 2018 |
| Deansford Kennels Limited | Other services | 2020 |
| Debateme Ltd | Information & communication | 2025 |
| Debdale Riding School Limited | Education | 2025 |
| Decanter Events Limited | Hospitality | 2019 |
| Decanters Limited | Hospitality | 2015 |
| Decking Direct Ltd | Administrative & support | 2025 |
| Decorled Ltd | Wholesale & retail | 2020 |