| DSK Solutions 80 Limited | Information & communication | 2026 |
| DSM Construct Ltd | Construction | 2019 |
| Dsmj Constructions Ltd | Construction | 2018 |
| DSP Heating Ltd | Construction | 2025 |
| DSQUARED2 Developments Ltd | Real estate | 2010 |
| DSR London Ltd | Real estate | 2023 |
| Dsrm Limited | Other services | 2017 |
| DSS Supplies Ltd | Wholesale & retail | 2024 |
| Dstudio Productions Ltd | Information & communication | 2025 |
| Dsuk Limited | Administrative & support | 2011 |
| DSV Construction Ltd | Construction | 2017 |
| DSV Surveying Ltd | Professional & scientific | 2019 |
| DT Property Developments Limited | Real estate | 2007 |
| DT87 Cabling Ltd | Construction | 2017 |
| Dtecho Ltd | Information & communication | 2025 |
| DTF Logo Printing Limited | Manufacturing | 2023 |
| Dtline Ventures Ltd | Administrative & support | 2023 |
| DTM Homes Limited | Real estate | 2020 |
| DTN Global Ltd | Wholesale & retail | 2018 |
| DUA & Brothers Properties Ltd | Real estate | 2024 |
| Duaa Legal Ltd | Professional & scientific | 2025 |
| Dubai Chocolate London Ltd | Manufacturing | 2025 |
| Dubai International Property Show Ltd | Hospitality | 2025 |
| Dubai Paratha BUN Ltd | Hospitality | 2025 |
| Dubb Limited | Real estate | 2018 |
| Dublin & Waterford Contractors Ltd | Real estate | 2011 |
| Dublin Properties Limited | Real estate | 2021 |
| Duchess Developments Ltd | Construction | 2008 |
| Duci Haus Ltd | Construction | 2020 |
| Duckduckgooselondon Limited | Hospitality | 2016 |
| Ducker Consulting UK Limited | Professional & scientific | 2020 |
| Duckworth Site Engineering Services Ltd | Construction | 1998 |
| Dudley Court (Wanstead) Management Association Limited | Households | 1973 |
| Dues Paid Performance Ltd | Education | 2025 |
| Dufferin Avenue Management Company Limited | Households | 2002 |
| Duffodils Limited | Manufacturing | 2025 |
| Dugees Limited | Wholesale & retail | 2021 |
| Dugway Limited | Health & social care | 2009 |
| Duja Sports Tech Ltd | Manufacturing | 2026 |
| Dukakos Ltd | Administrative & support | 2023 |
| Dulce Foods Limited | Wholesale & retail | 2019 |
| Duldul UZ Ltd | Wholesale & retail | 2026 |
| Dully Bay Capital Ltd | Professional & scientific | 2025 |
| Dulmi Ltd | Wholesale & retail | 2026 |
| Duma B Construction Ltd | Construction | 2025 |
| Dumitru Percu Ltd | Construction | 2025 |
| Dumpling DIP Limited | Hospitality | 2025 |
| Dunamis Homes Limited | Professional & scientific | 2016 |
| Dunav Group Limited | Construction | 2017 |
| Dungri Ltd | Real estate | 2020 |
| Dunlysis Limited | Financial services | 2026 |
| Dunlysis Trading Limited | Financial services | 2026 |
| Dunmarn Limited | Construction | 1987 |
| Dunmow Splash & Shine Ltd | Administrative & support | 2025 |
| Dunspring Lane Ltd | Real estate | 2020 |
| Dunstable Opco Ltd | Hospitality | 2025 |
| Dunwall Properties Ltd | Real estate | 2025 |
| DUO Decor Ltd | Hospitality | 2024 |
| DUO Duffel Ltd | Wholesale & retail | 2022 |
| Duos Properties Ltd | Real estate | 2025 |
| Durham Arms Ltd | Real estate | 2016 |
| Durocafe&Co Limited | Construction | 2015 |
| Durotech Limited | Hospitality | 2020 |
| Dursemoor Ltd | Information & communication | 2007 |
| Dusamy Homes Ltd | Real estate | 2018 |
| Dush (Holdings) Ltd | Real estate | 2023 |
| Dush Design Limited | Construction | 2023 |
| Dutch Shine Ltd | Wholesale & retail | 2023 |
| Duuning Hill Limited | Information & communication | 2023 |
| Duxes Apparel Ltd | Wholesale & retail | 2023 |
| DV Developers Limited | Real estate | 2018 |
| DV Rentals Ltd | Real estate | 2023 |
| DVD Pandya Limited | Transport & logistics | 2025 |
| DVK International Limited | Wholesale & retail | 2025 |
| DVN Music Ltd | Hospitality | 2026 |
| Dvode-Luxe Building Ltd | Construction | 2022 |
| DVS Consultants Ltd | Information & communication | 2023 |
| DW Country Works Ltd | Agriculture & fishing | 2016 |
| Dwell Assets Limited | Real estate | 2025 |
| Dwell Inn Homes Ltd | Real estate | 2024 |
| Dwell Inn Ltd | Hospitality | 2023 |
| Dwellux Ltd | Construction | 2024 |
| DXT Services Limited | Information & communication | 2025 |
| DY Energy Solutions Limited | Energy | 2024 |
| DY Furniture Limited | Wholesale & retail | 2018 |
| DYC Consultancy Limited | Real estate | 2016 |
| Dylan Finance Limited | Financial services | 2018 |
| Dylogics Limited | Information & communication | 2018 |
| Dymka Ltd | Wholesale & retail | 2025 |
| Dynamic Associates Ltd | Professional & scientific | 2022 |
| Dynamic Distribution (UK) Limited | Wholesale & retail | 2014 |
| Dynamic Financial Services Limited | Professional & scientific | 2009 |
| Dynamic London Ltd | Wholesale & retail | 2025 |
| Dynamic Mark Limited | Information & communication | 2018 |
| Dynamic Motors (UK) Ltd | Wholesale & retail | 2014 |
| Dynamic Trades International Ltd | Other services | 2019 |
| Dynamic World 123 Limited | Wholesale & retail | 2022 |
| Dynamicrp Limited | Wholesale & retail | 2021 |
| Dynamictech Recruitment Limited | Administrative & support | 2024 |
| Dynamis One Ltd | Information & communication | 2011 |