| Driving Test HQ Limited | Wholesale & retail | 2025 |
| DRK Serve Ltd | Construction | 2016 |
| Drombane Holdings 2 Limited | Real estate | 2022 |
| Drombane Holdings Limited | Real estate | 2019 |
| Drop and Go Shisha Ltd | Wholesale & retail | 2019 |
| Dropless Ltd | Administrative & support | 2017 |
| Dropship-Beast Ltd | Wholesale & retail | 2025 |
| Drova Logistics Limited | Transport & logistics | 2025 |
| DRS Delivers Ltd | Transport & logistics | 2022 |
| DRS Double Glazing Limited | Manufacturing | 2017 |
| Drscrubz Limited | Administrative & support | 2020 |
| Drums & Tanks Limited | Extraterritorial | 1996 |
| Drunk Dial Ltd | Hospitality | 2023 |
| DRY Cleaning Langley Ltd | Other services | 2025 |
| Drydrinker Ltd | Wholesale & retail | 2015 |
| Drywallpro Ltd | Construction | 2021 |
| DS Constructions London Ltd | Construction | 2024 |
| DS Heating & Plumbing Ltd | Construction | 2018 |
| DS09 Logistics Limited | Transport & logistics | 2026 |
| DS12JAT Ltd | Transport & logistics | 2024 |
| Dsalmonscarpentry Ltd | Manufacturing | 2026 |
| DSC Construction Limited | Construction | 2026 |
| Dscout UK Ltd | Information & communication | 2022 |
| Dsjjk Limited | Transport & logistics | 2024 |
| DSK Haulage Ltd | Transport & logistics | 2025 |
| DSM Chauffeur Ltd | Transport & logistics | 2025 |
| DSM Engineering Limited | Professional & scientific | 2019 |
| Dsmart Info Tech Ltd | Information & communication | 2023 |
| DSP Inc Ltd | Information & communication | 2019 |
| DSR Perfection Ltd | Other services | 2015 |
| DTB Carpentry Limited | Construction | 2017 |
| DTH Versatile Limited | Wholesale & retail | 2020 |
| Dtrs.Haulage Ltd | Transport & logistics | 2023 |
| DTS Practical Ltd | Wholesale & retail | 2017 |
| DTW Carpentry & Building Services Ltd | Construction | 2018 |
| DU Cube Ltd | Wholesale & retail | 2026 |
| DU Plumbing & Heating Ltd | Construction | 2025 |
| Duaa Clear Beauty Specialist Ltd | Other services | 2025 |
| Dual Matrix Services Limited | Administrative & support | 2025 |
| Dual Omega Ltd | Construction | 2015 |
| Ducal Care Ltd | Administrative & support | 2024 |
| Duck Pond Markets Limited | Professional & scientific | 2014 |
| Duck Tours Ltd | Manufacturing | 2024 |
| Duda Consulting Limited | Information & communication | 2011 |
| DUE South Express Limited | Transport & logistics | 2012 |
| Duelr Ltd | Information & communication | 2026 |
| Dugufilms Ltd | Information & communication | 2023 |
| Dukes Estate Agency Ltd | Real estate | 2022 |
| Dulai Construction Ltd. | Construction | 2015 |
| Dulux Limited | Professional & scientific | 1986 |
| Duma Limited | Manufacturing | 2005 |
| Dundee Homes Limited | Real estate | 2025 |
| Dunford Wood Limited | Hospitality | 2013 |
| Dunford Wood NH Limited | Hospitality | 2020 |
| Dunholme Castrum Cottage Ltd | Households | 2022 |
| Dunholme Ltd | Hospitality | 2024 |
| Dunholme Minster House Ltd | Real estate | 2023 |
| Dunholme Upper Caefaerlog Ltd | Real estate | 2026 |
| Dunish Consultants Ltd | Professional & scientific | 2012 |
| Duonest Limited | Real estate | 2025 |
| Durex Limited | Professional & scientific | 1964 |
| Durga Stone Limited | Construction | 2025 |
| Dusmak Ltd | Construction | 2025 |
| Dustomatic Limited | Administrative & support | 2021 |
| Dustpic Limited | Professional & scientific | 1981 |
| Duxton Limited | Real estate | 2015 |
| Duyft Limited | Transport & logistics | 2015 |
| DV Publications Limited | Information & communication | 2024 |
| Dv&Nv Construction Ltd | Construction | 2025 |
| DVA UK Ltd | Wholesale & retail | 2024 |
| Dvgn Ltd | Transport & logistics | 2018 |
| DVP Homes Limited | Real estate | 2020 |
| DVR Global Solutions Ltd | Wholesale & retail | 2020 |
| DVS Property PVT Limited | Financial services | 2025 |
| DW Trans Ltd | Transport & logistics | 2021 |
| DWT Waste Management Limited | Water & waste | 2024 |
| DX (Group) Limited | Professional & scientific | 2013 |
| DX Partners Ltd | Wholesale & retail | 2012 |
| DX Services Limited | Professional & scientific | 2004 |
| Dynamax Limited | Administrative & support | 2017 |
| Dynamic Employment Ltd | Administrative & support | 2024 |
| Dynamic Group Logistics UK Ltd | Transport & logistics | 2024 |
| Dynamic Lives Group Limited | Other services | 2026 |
| Dynamic MER Limited | Other services | 2019 |
| Dynamic Property Estates Ltd | Real estate | 2025 |
| Dynamic Thermal Solutions Limited | Professional & scientific | 2014 |
| Dynamic Travels and Tours Limited | Administrative & support | 2012 |
| Dynamite Gear Ltd | Wholesale & retail | 2023 |
| Dynamite Ventures Global Ltd | Wholesale & retail | 2026 |
| Dynasty.Vss Limited | Administrative & support | 2025 |
| Dynx Limited | Wholesale & retail | 2007 |
| Dystil Ltd | Information & communication | 2026 |
| Dyya Ltd | Other services | 2019 |
| Dzires London Ltd | Wholesale & retail | 2022 |
| E & F Markets Limited | Wholesale & retail | 2017 |
| E B W Consultancy Limited | Professional & scientific | 2002 |
| E Commercee Hub Limited | Wholesale & retail | 2025 |
| E Desire Ltd | Wholesale & retail | 2025 |
| E P Entertainment UK Ltd | Arts & recreation | 2007 |
| E Secrets Limited | Wholesale & retail | 2021 |