| Dlmd Properties Ltd | Real estate | 2022 |
| Dluci Ltd | Manufacturing | 2023 |
| DLV3 Ltd | Transport & logistics | 2021 |
| DM & AE ELY Holdings Limited | Financial services | 2022 |
| DM Cleaning Ltd | Administrative & support | 2021 |
| DMG Speed Ltd | Transport & logistics | 2016 |
| DMI Brickwork Limited | Construction | 2024 |
| DMI Projects Ltd | Construction | 2022 |
| DMJ Leon Trans Ltd | Transport & logistics | 2023 |
| DMV Contractors Ltd | Construction | 2025 |
| DN Commissions Limited | Transport & logistics | 2011 |
| Dnats Solutions Limited | Professional & scientific | 2014 |
| DNC Management Ltd | Professional & scientific | 2021 |
| DNE Removal Ltd | Transport & logistics | 2026 |
| DNG Building Construction Ltd | Construction | 2019 |
| DNS DRY Lining Limited | Construction | 2018 |
| DNS Logistics Limited | Transport & logistics | 2018 |
| DNT Recruitment Limited | Administrative & support | 2026 |
| DO Family Investments Ltd | Real estate | 2025 |
| DOA Heating&Plumbing and Cooling Limited | Construction | 2025 |
| Dobrev Trans Ltd | Transport & logistics | 2014 |
| DOC & Crumbs Ltd | Manufacturing | 2026 |
| Doch Limited | Wholesale & retail | 2017 |
| Doch Properties Limited | Real estate | 2021 |
| Docklands Waste Disposal Limited | Water & waste | 1989 |
| Docklands Waste Recycling Limited | Other services | 1992 |
| Docksy Global Ltd | Information & communication | 2026 |
| Docmos Limited | Professional & scientific | 2019 |
| Docr Management Limited | Extraterritorial | 2021 |
| Doctime Limited | Information & communication | 2020 |
| Doctor HAN Limited | Health & social care | 2011 |
| Doctra AI Limited | Information & communication | 2026 |
| Dodhomes Ltd | Real estate | 2018 |
| DOE Capital Group Limited | Extraterritorial | 2021 |
| Doesgate Mews Management Company Limited | Households | 2023 |
| Dogtan Distribution Ltd | Wholesale & retail | 2025 |
| DOL Construction Ltd | Construction | 2022 |
| Dolce Delights Ltd | Hospitality | 2024 |
| Dolmabahce Ltd | Construction | 2025 |
| Dolmen Build and Design Limited | Construction | 2014 |
| Dolmen Kitchens Ltd | Construction | 2021 |
| DOM NR1 Ltd | Real estate | 2025 |
| Domey Multiple Ventures UK Ltd | Wholesale & retail | 2025 |
| Domi Buildings Ltd | Construction | 2025 |
| Domicile Letts Ltd | Households | 2025 |
| Domin Trans Ltd | Transport & logistics | 2022 |
| Dominion City Canning Town Ltd | Education | 2026 |
| Dominion Word Centre | Other services | 2020 |
| Dominique and SON Ltd | Construction | 2021 |
| Dominiva Ltd | Other services | 2023 |
| DON REY Finance Systems Consultancy Limited | Information & communication | 2025 |
| Don'T Sell to ME Limited | Financial services | 2020 |
| Donatti Ltd | Wholesale & retail | 2025 |
| Doncaster Aggregate Services Limited | Administrative & support | 2015 |
| Donna Bella London Ltd | Other services | 2021 |
| Donner Sizzle Ltd | Hospitality | 2025 |
| Donos Construction Ltd | Construction | 2017 |
| Donz Ltd | Wholesale & retail | 2023 |
| Dooro Ltd | Manufacturing | 2026 |
| Dorek Ltd | Health & social care | 2019 |
| Dorion Quest Ltd | Professional & scientific | 2018 |
| Doris Care Services Limited | Health & social care | 2022 |
| Dorla Estates Ltd | Real estate | 2020 |
| Dormar Products Limited | Wholesale & retail | 2016 |
| Dornack International Limited | Transport & logistics | 1990 |
| Dorogan Ltd | Transport & logistics | 2016 |
| Dorram Ltd | Construction | 2024 |
| Dorset Hospitality Limited | Hospitality | 2021 |
| Dosanjh Capital Holdings Ltd | Real estate | 2022 |
| Dosanjh Capital Ventures Ltd | Real estate | 2019 |
| DOT2INFINITY Ltd | Other services | 2017 |
| Dotmund Holdings Limited | Information & communication | 2011 |
| Double a P Limited | Real estate | 2024 |
| Double MO Limited | Wholesale & retail | 2018 |
| Dough to Go Limited | Hospitality | 2024 |
| Dovy Ltd | Wholesale & retail | 2019 |
| Dowglobal Solution Autos Ltd | Information & communication | 2019 |
| Doxado Limited | Health & social care | 2017 |
| Doyson Investments Ltd | Real estate | 2025 |
| DP Consults Ltd | Financial services | 2025 |
| DR Expat-Uk Ltd | Administrative & support | 2025 |
| DR Guobadia Global Ltd | Other services | 2020 |
| DR N Aesthetics Ltd | Health & social care | 2025 |
| Dr.Tech Grays Ltd | Wholesale & retail | 2026 |
| Dr.Tech Ltd | Wholesale & retail | 2020 |
| Drakes Property Developers Limited | Construction | 2024 |
| DRB Recruitment Ltd | Administrative & support | 2022 |
| DRB Service & Maintenance Ltd | Construction | 2018 |
| Dream Terra PVT Ltd | Administrative & support | 2018 |
| DREAMCARE24 Limited | Health & social care | 2025 |
| Dreamcast Limited | Other services | 2017 |
| Dreamerce Studios Ltd | Professional & scientific | 2024 |
| Dresdale Properties Ltd | Real estate | 2019 |
| Dresdale Solutions Ltd | Information & communication | 2014 |
| Dressmywardrobe.Com Limited | Wholesale & retail | 2019 |
| Drive Line Group Ltd | Wholesale & retail | 2025 |
| Drivegdb Ltd | Transport & logistics | 2022 |
| Driver Hire Essex Limited | Transport & logistics | 2023 |
| Driver REC Ltd | Administrative & support | 2024 |
| DRK Truck Ltd | Transport & logistics | 2014 |