| Dilkash Theatre UK CIC | Arts & recreation | 2025 |
| Dilkhush Enterprise Limited | Real estate | 2024 |
| Dimoh Solutions Ltd | Manufacturing | 2018 |
| Dimuerre Limited | Wholesale & retail | 2023 |
| Dinerz Limited | Hospitality | 2018 |
| Direct Financial & Payroll Services Limited | Professional & scientific | 2025 |
| Direct Installations Ltd | Construction | 2015 |
| Direct Joinery Specialists Ltd | Manufacturing | 2021 |
| Direct Properties SPV Ltd | Real estate | 2025 |
| Direct Security Limited | Administrative & support | 1994 |
| Direct Stock UK Ltd | Wholesale & retail | 2019 |
| Directpeptidesuk Limited | Wholesale & retail | 2026 |
| Discount Home Surfaces Ltd | Wholesale & retail | 2017 |
| Discount Trade Ltd | Wholesale & retail | 2016 |
| Diverse Wellbeing Services Limited | Health & social care | 2018 |
| Divine Driveways Ltd | Administrative & support | 2023 |
| Dixon Shaw Limited | Construction | 1963 |
| Dixons Funeral Service Limited | Other services | 2025 |
| DJB Installation Limited | Construction | 2013 |
| DJC Commercial Holdings Limited | Real estate | 2023 |
| DJC Property Investment Limited | Real estate | 2018 |
| DJP Plumbing & Heating Services Ltd | Construction | 2018 |
| DKA Traders Ltd | Wholesale & retail | 2026 |
| DKF Inc Ltd | Wholesale & retail | 2012 |
| DKJ Fashion Ltd | Wholesale & retail | 2020 |
| Dkjr Limited | Information & communication | 2015 |
| Dkmedia Limited | Information & communication | 2025 |
| DLA Developments Ltd | Construction | 2024 |
| DLC Consultance Ltd | Professional & scientific | 2025 |
| DLC Dental Agency Limited | Administrative & support | 2019 |
| DLF Limited | Construction | 2008 |
| Dljc Ltd | Professional & scientific | 2025 |
| DM Electrical (NW) Ltd | Construction | 2015 |
| DM Electronic Assembly Ltd | Manufacturing | 2023 |
| DM Quality Interiors Ltd | Construction | 2026 |
| DM Roofing and Cladding Limited | Construction | 2017 |
| Dmas Properties Ltd | Real estate | 2022 |
| DMG Groundworks and Plant Hire Limited | Construction | 2016 |
| Dmif Limited | Wholesale & retail | 2022 |
| DMK Electronics Limited | Manufacturing | 2009 |
| DNA Detailing Ltd | Administrative & support | 2025 |
| Dnbd Utility Connections Ltd | Construction | 2018 |
| DO for Future Ltd | Wholesale & retail | 2024 |
| Dobbinetts Redevelopment Limited | Construction | 2014 |
| Doco International Limited | Manufacturing | 1996 |
| DOH Bakery Ltd | Hospitality | 2024 |
| Doity Conveyor Services Limited | Manufacturing | 1968 |
| Doity Engineering Limited | Manufacturing | 1956 |
| Dolce Vita Italian Ltd | Hospitality | 2023 |
| Dolphin Walk in Showers Ltd | Construction | 2020 |
| Domain Assets Limited | Arts & recreation | 2005 |
| Domicile Construction Ltd | Construction | 2020 |
| Dominion Crest Group Ltd | Wholesale & retail | 2024 |
| Dominion Portfolio Limited | Construction | 2011 |
| Domzee Limited | Real estate | 2025 |
| DON Legacy Jewellers Limited | Wholesale & retail | 2025 |
| DON Ludovico Limited | Manufacturing | 2020 |
| Donbella Ltd | Professional & scientific | 2025 |
| Doner Hosue Limited | Hospitality | 2025 |
| Donnelly Developments Ltd | Real estate | 2025 |
| Donnellys (Rochdale) Limited | Real estate | 1940 |
| DOORS2FIT Ltd | Construction | 2025 |
| Dopamine Spot Ltd | Hospitality | 2026 |
| Dora Francis Properties Ltd | Real estate | 2020 |
| Dorothy C Ltd | Health & social care | 2014 |
| Dost CUT PVT Limited | Other services | 2025 |
| Double a Renovations Ltd | Construction | 2024 |
| Doublejimmy Supplying & Services Ltd | Administrative & support | 2025 |
| Doug Haus Dog Co Limited | Wholesale & retail | 2023 |
| Douglas Fencing Ltd | Administrative & support | 2025 |
| Dove Housing Ltd | Real estate | 2022 |
| Dowland Manor Estates Limited | Construction | 1972 |
| Downlights Direct Limited | Extraterritorial | 2011 |
| Doxa Trading Ltd | Financial services | 2024 |
| Doxford Stirling Limited | Real estate | 2023 |
| DP Visual Studio Ltd | Information & communication | 2024 |
| DR AA Ltd | Health & social care | 2018 |
| DR AA Medical Ltd | Health & social care | 2023 |
| DR Ahmad Smile Studio Ltd | Health & social care | 2024 |
| DR Ansar Mahmood Ltd | Health & social care | 2013 |
| DR Asia Ahmed Medical Ltd | Health & social care | 2026 |
| DR R.N Limited | Health & social care | 2022 |
| DR. EA Ltd | Health & social care | 2026 |
| Draftlers Limited | Information & communication | 2025 |
| Dragon Groundwork Tools Ltd | Manufacturing | 2020 |
| Dragon Security Limited | Administrative & support | 2023 |
| Dragon SS (UK) T/A Dragon Security Limited | Administrative & support | 2022 |
| Dragonstone Holdings Limited | Financial services | 2024 |
| Drais Developments Ltd | Construction | 2018 |
| Drais Property Holdings Ltd | Real estate | 2020 |
| Draw Property Limited | Real estate | 2025 |
| Drawbridge Advice Bridging Ltd | Professional & scientific | 2024 |
| Dreaded Mead Limited | Wholesale & retail | 2022 |
| Dream Luxuries Ltd | Real estate | 2025 |
| Dream Properties Management Ltd | Construction | 2025 |
| Dream Team Consultants Limited | Professional & scientific | 2025 |
| Dreamland Q&K Properties Ltd | Real estate | 2024 |
| Dreamlet Estates Ltd | Real estate | 2023 |
| Dreamlux Interiors Ltd | Manufacturing | 2024 |
| Dreamweave Textiles Ltd | Wholesale & retail | 2023 |