| DB Mortgage Limited | Financial services | 2010 |
| DB Plastering and Rendering Limited | Construction | 2023 |
| DB Project Consulting Ltd | Information & communication | 2022 |
| DB Training Academy Limited | Other services | 2019 |
| DBB Engineering Limited | Professional & scientific | 2017 |
| Dbnb Solutions Ltd | Hospitality | 2024 |
| DBS Global Ltd | Water & waste | 2017 |
| Dbvse Ltd | Arts & recreation | 2024 |
| DC & JC Holdings Limited | Financial services | 2018 |
| DC & JC Properties Limited | Real estate | 2018 |
| DC & JC Topco Limited | Financial services | 2023 |
| Dcetin Limited | Extraterritorial | 2022 |
| DD Fire Alarms Ltd | Administrative & support | 2008 |
| DD Optical Ltd | Manufacturing | 2013 |
| DD Otex Ltd | Other services | 2015 |
| DE Inspection Services Ltd | Construction | 2019 |
| DE Roma Blackpool Ltd | Hospitality | 2024 |
| DE Roma Central Ltd | Hospitality | 2026 |
| DE Vere Gardens Services Limited | Households | 1974 |
| De'Ath & Sons Limited | Arts & recreation | 2005 |
| Deaconsfield Properties Limited | Real estate | 1997 |
| Deaconsfield Properties North West Limited | Real estate | 2023 |
| Dealership Media Limited | Professional & scientific | 2023 |
| Dealership Publications Ltd | Information & communication | 2023 |
| Death to Pest Limited | Other services | 2004 |
| Decoded Education Ltd | Professional & scientific | 2026 |
| Dedalera Ltd | Information & communication | 2018 |
| DEE Trading Limited | Arts & recreation | 2023 |
| Deejay Health Care Limited | Health & social care | 2024 |
| Deepsea Drilling Services Ltd | Professional & scientific | 2018 |
| Definitelymaybee Ltd | Transport & logistics | 2025 |
| Degee Value Ltd | Other services | 2025 |
| Dekester Cleaning Services Limited | Administrative & support | 2025 |
| Deli Snacks Ltd | Hospitality | 2024 |
| Delta Management Solutions Ltd | Information & communication | 2013 |
| Delta PAY Ltd | Administrative & support | 2022 |
| Delworrell Limited | Transport & logistics | 2025 |
| Demarex (II) Limited | Wholesale & retail | 2005 |
| Demopad Software Ltd | Information & communication | 1999 |
| Demtech Demolition Services Ltd | Construction | 2014 |
| Demystify Security Limited | Information & communication | 2012 |
| Dena Property Limited | Real estate | 2019 |
| Dendev Limited | Information & communication | 2010 |
| Denebank Residents Association (Bispham) Limited | Households | 1997 |
| Dental Decontamination Ltd | Other services | 2010 |
| Denville BP Ltd | Hospitality | 2026 |
| Deofame Recruitment Services Ltd | Administrative & support | 2023 |
| Deols Laundry Limited | Other services | 2022 |
| Depict CGI Ltd | Professional & scientific | 2018 |
| Depositary Consulting Limited | Information & communication | 2018 |
| Derovere Limited | Hospitality | 2019 |
| Derriaghy Farms Ltd | Wholesale & retail | 2025 |
| Derryam Grey Limited | Wholesale & retail | 2025 |
| Derwent House (Portinscale) Ltd | Households | 2022 |
| Desi Lounge (Northwest) Ltd | Hospitality | 2025 |
| Design Your Life Projects Ltd | Information & communication | 2026 |
| Destee Properties Limited | Real estate | 2006 |
| Detailing Depot Ltd | Wholesale & retail | 2019 |
| Devaki RAD Solutions Ltd | Information & communication | 2020 |
| Devarc Engineering Ltd | Information & communication | 2019 |
| Development Assist Ltd | Hospitality | 2020 |
| Devil Industries Ltd | Wholesale & retail | 2025 |
| Devila Ltd | Administrative & support | 2019 |
| Deviroad Limited | Wholesale & retail | 2026 |
| Devitt Projects Ltd | Wholesale & retail | 2025 |
| Devon Griffith Limited | Information & communication | 2014 |
| Devona IT Limited | Information & communication | 2014 |
| Devonbp Limited | Hospitality | 2026 |
| Devonshire Court (Blackpool) Limited | Households | 1972 |
| Devonshire Local Ltd | Wholesale & retail | 2025 |
| Dewhurst Engineering Limited | Manufacturing | 2002 |
| Dewsnap Bulding Services Limited | Construction | 2025 |
| Dexon Supplies Ltd | Wholesale & retail | 2020 |
| Dexorbital Ltd | Financial services | 2013 |
| DFH Autos Ltd | Wholesale & retail | 2012 |
| Dfht Civils Limited | Construction | 2013 |
| DG Invest (NW) Limited | Real estate | 2025 |
| DG14 Limited | Information & communication | 2018 |
| DGB Support Work Ltd | Health & social care | 2024 |
| DGLIFE360 Limited | Health & social care | 2013 |
| DGR Refurbishment Ltd | Construction | 2025 |
| DGT Security Systems Ltd | Administrative & support | 2015 |
| DGW Access Ltd | Other services | 2022 |
| DH Electrical Installations Ltd | Construction | 2021 |
| Dharvik Ltd | Wholesale & retail | 2024 |
| Dhck Limited | Financial services | 2021 |
| DHK Limited | Information & communication | 2013 |
| Dhlt (Holdings) Limited | Administrative & support | 2022 |
| Dhlt Limited | Information & communication | 2020 |
| Diabli Ltd | Information & communication | 2021 |
| Dial a Beer Ltd | Wholesale & retail | 2019 |
| Diamond Leisure NW Ltd | Arts & recreation | 2025 |
| Diamond Property Group Limited | Real estate | 2013 |
| Diamondlegs Ltd | Other services | 2016 |
| Diamonds Showbar Ltd | Hospitality | 2024 |
| Diamondzee Limited | Wholesale & retail | 2022 |
| Dianne Benham Limited | Information & communication | 2019 |
| Dibden Memphis Ltd | Wholesale & retail | 2025 |
| Dickson Pizza Ltd | Hospitality | 2023 |
| Dickson Road Car Sales Ltd | Wholesale & retail | 2024 |