| DJS Motors Limited | Wholesale & retail | 2018 |
| DJT Holdings Limited | Financial services | 2023 |
| DK Childcare Ltd | Health & social care | 2019 |
| DK Consulting (NW) Ltd | Information & communication | 2012 |
| DK Pubs Ltd | Hospitality | 2024 |
| DKG Partners Ltd | Professional & scientific | 2025 |
| Dkhm Ltd | Real estate | 2025 |
| Dkit Ltd | Information & communication | 2025 |
| DKJ Enterprise Ltd | Real estate | 2024 |
| DKL Construction Limited | Construction | 2019 |
| Dkmc Investments Ltd | Real estate | 2016 |
| DKS Barrow Limited | Construction | 2023 |
| DL & SON Ltd | Professional & scientific | 2022 |
| DL Cyber Limited | Information & communication | 2026 |
| DL M & E Building Services Ltd | Construction | 2005 |
| DL M & E Holdings Limited | Financial services | 2013 |
| DLC Autos Ltd | Wholesale & retail | 2020 |
| DLC Investment Holdings Limited | Financial services | 2024 |
| DLC Transport Ltd | Transport & logistics | 2026 |
| Dlcc Health Care Services Ltd | Health & social care | 2017 |
| Dlcnetic Ltd | Wholesale & retail | 2022 |
| DLE Communications Limited | Information & communication | 2015 |
| DLG Contracts Limited | Wholesale & retail | 2022 |
| DLM Joinery & Building Contractors Ltd | Construction | 2026 |
| Dlmc Holdings Limited | Financial services | 2025 |
| Dlwalker Ltd | Construction | 2018 |
| DM Building & Maintenance Ltd | Construction | 2015 |
| DM Developments (NW) Limited | Real estate | 2025 |
| DM Ecom Ltd | Wholesale & retail | 2025 |
| DM Galbraith Limited | Professional & scientific | 2008 |
| DM One Bolton Ltd | Wholesale & retail | 2022 |
| DM Sports Ltd | Professional & scientific | 2018 |
| DM Tiling Limited | Construction | 2006 |
| DMA Kingdom Ltd | Manufacturing | 2024 |
| Dmag Kingdom Ltd | Professional & scientific | 2026 |
| DMC Carpentry and Construction Limited | Construction | 2011 |
| DMC Media Solutions Limited | Administrative & support | 2018 |
| DMD Costs Limited | Professional & scientific | 2024 |
| DMD Group Properties Ltd | Real estate | 2025 |
| DMD Talkshow UK Women Empowerment Limited | Professional & scientific | 2026 |
| Dmek Services Ltd | Transport & logistics | 2016 |
| DMG Trucking Contractors Ltd | Transport & logistics | 2026 |
| Dmorris Commercials Ltd | Wholesale & retail | 2025 |
| DMS Custom Install Ltd | Information & communication | 2006 |
| DMS Leasing Limited | Extraterritorial | 2019 |
| DMS Plus Limited | Wholesale & retail | 2014 |
| DMS Reprographics Ltd | Extraterritorial | 2011 |
| DMT Carpentry & Joinery Limited | Manufacturing | 2026 |
| DMV Property Limited | Real estate | 2019 |
| DMV Storage Ltd | Transport & logistics | 2025 |
| DN Performance Group Ltd | Financial services | 2026 |
| DNA Property Management Services Ltd | Real estate | 2022 |
| Dnanalysis Limited | Health & social care | 2013 |
| DNB Fencing&Garden Maintenance Ltd | Administrative & support | 2025 |
| Dndhandymen Ltd | Construction | 2021 |
| Dndone Ltd | Information & communication | 2023 |
| DNG Traders Ltd | Wholesale & retail | 2026 |
| DNJ Pizza Parlour Ltd | Hospitality | 2026 |
| DNL Management Services Limited | Administrative & support | 2013 |
| DNL Travels Ltd | Transport & logistics | 2023 |
| Dntta Limited | Wholesale & retail | 2024 |
| Dnylexpress Ltd | Transport & logistics | 2026 |
| DO IT DTF Ltd | Manufacturing | 2026 |
| DOC 78/28 Limited | Health & social care | 2016 |
| Dock Gate Events Limited | Arts & recreation | 2007 |
| Dock Gate Property Limited | Real estate | 2018 |
| Dock Street Butchers Fleetwood Ltd | Wholesale & retail | 2025 |
| Doclogica Ltd. | Wholesale & retail | 2003 |
| Doctor Delivered Limited | Health & social care | 2020 |
| Doctor Spex Limited | Financial services | 2018 |
| Doctor Wrest Aesthetics Ltd | Administrative & support | 2018 |
| Doctors R US Limited | Health & social care | 2013 |
| Doctrade Ltd | Wholesale & retail | 2024 |
| Dodge Ltd | Administrative & support | 2025 |
| DOE HEY Reservoir Co.Limited | Extraterritorial | 1971 |
| Dog Barn Yorkshire Ltd | Wholesale & retail | 2025 |
| Dog Days Bolton Ltd | Other services | 2019 |
| Dog Diplomacy Limited | Other services | 2015 |
| Dog Engineering Ltd | Professional & scientific | 2017 |
| Dog Match Limited | Agriculture & fishing | 2021 |
| Doga Transport Ltd | Transport & logistics | 2018 |
| Doggybox Ltd | Wholesale & retail | 2023 |
| Dokkadoki Ltd | Hospitality | 2026 |
| Dolce Gelato Ltd | Hospitality | 2023 |
| Dolfin Traderz Ltd | Wholesale & retail | 2024 |
| Dolla Beauty Ltd | Wholesale & retail | 2021 |
| Dollars Tree Ltd | Wholesale & retail | 2026 |
| Dollush Limited | Manufacturing | 2025 |
| Dolphin Engineering Solutions Ltd | Professional & scientific | 2025 |
| Dolphin Property & Development Ltd | Real estate | 2025 |
| Dom-A-Doo Logistics Limited | Transport & logistics | 2008 |
| Domac Limited | Professional & scientific | 2019 |
| Domestic Boiler Services (NW) Limited | Construction | 2006 |
| Domestic Extensions 1992 Limited | Construction | 2026 |
| Dominika Kacprzyk Fatalaszki Ltd | Wholesale & retail | 2026 |
| Domus Recruitment Ltd | Administrative & support | 2012 |
| Domus Search Ltd | Administrative & support | 2021 |
| Domus Specialist Division Ltd | Administrative & support | 2013 |
| Domus Ventures Limited | Real estate | 2024 |
| DON Tacos Franchising Limited | Professional & scientific | 2022 |