| Crown Hand Car Wash Ltd | Wholesale & retail | 2018 |
| Crystal Clear Support Services Ltd | Administrative & support | 2011 |
| Crystal Clear Window Cleaning Specialists Limited | Administrative & support | 2007 |
| Custom Livings Properties Ltd | Households | 2026 |
| Customfitforme Ltd | Information & communication | 2026 |
| Cutts Rentals Ltd | Households | 2025 |
| CV Hire and Repairs Ltd | Wholesale & retail | 2025 |
| CV Motors Ltd | Wholesale & retail | 2021 |
| CV Vraja Transport Limited | Manufacturing | 2018 |
| Cwmc Services Ltd | Real estate | 2022 |
| Cymac Consulting Limited | Professional & scientific | 2025 |
| D & a Scaffold Services Ltd | Construction | 2023 |
| D Ventures Limited | Health & social care | 2016 |
| D&M Borkan Ltd | Transport & logistics | 2022 |
| D.D.&C. Ltd | Administrative & support | 2025 |
| Da'Onis Limited | Construction | 2015 |
| DA1F3 Limited | Arts & recreation | 2024 |
| Dabook Services Limited | Transport & logistics | 2016 |
| Dacfor Ltd | Construction | 2026 |
| Dacus Trucker Ltd | Transport & logistics | 2021 |
| DAD Transport Ltd | Transport & logistics | 2018 |
| DAG Callatis Ltd | Construction | 2023 |
| Daily Deposit Group Ltd | Wholesale & retail | 2023 |
| Dakus Construction Ltd | Construction | 2018 |
| Dalgarno IP Ltd | Administrative & support | 2019 |
| Damat Ventures Limited | Other services | 2016 |
| Dammy Limited | Health & social care | 2012 |
| Dandel & DEB Services Limited | Wholesale & retail | 2019 |
| Dandrujuttransport Limited | Transport & logistics | 2023 |
| Danish Enterprises Limited | Wholesale & retail | 2023 |
| Danto Trans Ltd | Transport & logistics | 2023 |
| Daparie Properties Limited | Real estate | 2024 |
| DAR & DEN Ltd | Construction | 2021 |
| Dass Development Limited | Construction | 2017 |
| Dataware Consultancy Centre Limited | Information & communication | 1998 |
| Dave's Viral Vault Ltd | Information & communication | 2026 |
| Day Spring Assets Ltd | Real estate | 2022 |
| Dayspring Care Ltd | Health & social care | 2014 |
| Dcsmokeytrails Limited | Hospitality | 2025 |
| Ddld Construction Ltd | Construction | 2024 |
| DE & MO Limited | Construction | 2010 |
| DE Tutu Ltd | Health & social care | 2008 |
| Deanhall Transport Limited | Transport & logistics | 2000 |
| Deben House Service Limited | Health & social care | 2023 |
| Dede Cleaning Services Ltd | Administrative & support | 2019 |
| Defeating Language Limited | Education | 2017 |
| Deliad Consult Ltd | Professional & scientific | 2018 |
| Deliu Trans Ltd | Transport & logistics | 2016 |
| Delteus Limited | Wholesale & retail | 2023 |
| DENIS2017 Limited | Transport & logistics | 2018 |
| Denise Quality Care Services Limited | Health & social care | 2011 |
| Depth Over Altitude Limited | Wholesale & retail | 2023 |
| Derbickle Limited | Wholesale & retail | 2025 |
| DES Care Homes Ltd | Health & social care | 2020 |
| Dessilia Limited | Administrative & support | 2019 |
| DG Food Consulting Ltd | Hospitality | 2023 |
| DG Projects Limited | Transport & logistics | 2019 |
| DG Smart Solutions Ltd | Construction | 2024 |
| DI Boca Ltd | Transport & logistics | 2021 |
| DI Kare Limited | Transport & logistics | 2019 |
| Diasor Ltd | Transport & logistics | 2025 |
| Digitronic Essex Ltd | Wholesale & retail | 2014 |
| Dignify a Girl Ltd | Other services | 2019 |
| Dilly Dally Group Ltd | Information & communication | 2025 |
| Dingleair Ltd | Construction | 2023 |
| Discipleship Thrust & Endtime Missions Limited | Other services | 2024 |
| DIT Trans Limited | Transport & logistics | 2017 |
| Divine Grace Commission | Extraterritorial | 2007 |
| Divine Help Properties Ltd | Real estate | 2026 |
| DM Hub Ltd | Wholesale & retail | 2024 |
| DMC Contracts Limited | Construction | 2004 |
| DMC Contracts Trustees Limited | Other services | 2021 |
| DMC Flooring Specialists Limited | Construction | 1999 |
| DMC Rail Limited | Professional & scientific | 2012 |
| DMC Restoration Limited | Construction | 2007 |
| Dominion Chapel International CIC | Health & social care | 2024 |
| Dominion Web Global Services Limited | Information & communication | 2021 |
| DOMINION4EVER Management Limited | Real estate | 2010 |
| Domus Design Build Ltd | Construction | 2021 |
| DON Daniel Trans Ltd | Transport & logistics | 2016 |
| Doris and Family Limited | Health & social care | 2025 |
| DOS Martins Ltd | Transport & logistics | 2017 |
| Dotman Investment Limited | Construction | 2024 |
| Dracula Grill Ltd | Hospitality | 2026 |
| Drassmark Limited | Transport & logistics | 2013 |
| Dream Drive Motors Limited | Wholesale & retail | 2025 |
| Drheavy Ltd | Wholesale & retail | 2026 |
| Drift Finance Ltd | Financial services | 2026 |
| DSP Vehicle Repairs Ltd | Wholesale & retail | 2023 |
| Dsqaure Ltd | Health & social care | 2022 |
| DTD Groundworks Ltd | Construction | 2022 |
| Duffy the Brand Ltd | Wholesale & retail | 2023 |
| Dunamis Professionals Limited | Administrative & support | 2018 |
| Durant & SON Limited | Transport & logistics | 2022 |
| Dwood Electrical Services Limited | Construction | 2019 |
| E&A Invest Limited | Real estate | 2024 |
| E&E-Eat&Enjoy Ltd | Wholesale & retail | 2024 |
| E14 Services Limited | Administrative & support | 2024 |
| EAA Company Inspection Limited | Other services | 2026 |
| EAA UK Inspections Limited | Other services | 2019 |