| DRT Recycling Limited | Manufacturing | 2015 |
| Druh UK Limited | Administrative & support | 2011 |
| Druid Tiles Limited | Real estate | 1947 |
| Drumgray Construction Limited | Construction | 2014 |
| Drummond House Consulting Ltd | Professional & scientific | 2015 |
| Drumpac Holdings Ltd | Financial services | 2022 |
| Drury's Technical Services Limited | Professional & scientific | 2006 |
| Drusilla & Myles Ltd | Wholesale & retail | 2019 |
| DRW Holdings Ltd | Administrative & support | 2016 |
| DRY Green Digital Ltd | Other services | 2020 |
| DRY Green UK Limited | Other services | 2018 |
| Dryden Street Management Company Limited | Households | 2010 |
| Drydens Limited | Professional & scientific | 2008 |
| DRYLINING4ALL Ltd | Construction | 2026 |
| Drystone Civil Engineering Ltd | Construction | 2024 |
| Drystone Developments Ltd | Real estate | 2022 |
| Drzf Ltd | Wholesale & retail | 2026 |
| DS Accountancy and Bookkeeping Services Ltd | Professional & scientific | 2025 |
| DS Bedrock Ltd | Information & communication | 2023 |
| DS Builders (Yorkshire) Ltd | Construction | 2021 |
| DS Cars Ltd | Transport & logistics | 2023 |
| DS Data Services Ltd | Information & communication | 2017 |
| DS Emotion (London) Limited | Professional & scientific | 2016 |
| DS Emotion (Manchester) Limited | Professional & scientific | 2013 |
| DS Event Services Ltd | Other services | 2023 |
| DS Lease Holding Limited | Financial services | 2017 |
| DS Mobile Mechanic Limited | Wholesale & retail | 2026 |
| DS Motors Leeds Limited | Wholesale & retail | 2021 |
| DS Surveyors Ltd | Professional & scientific | 2022 |
| DS Worsley Limited | Professional & scientific | 2022 |
| Ds&L Property Consulting Limited | Construction | 2014 |
| Ds.Emotion Group Ltd | Financial services | 2017 |
| DS1 Builders Ltd | Households | 2026 |
| DS182 Ltd. | Hospitality | 2020 |
| DS96 Holdings Limited | Financial services | 2023 |
| DSA Trading Ltd | Wholesale & retail | 2018 |
| Dsaj Consulting Ltd | Financial services | 2023 |
| DSB Logistics Couriers Ltd | Transport & logistics | 2025 |
| DSB Logistics Ltd | Transport & logistics | 2021 |
| DSC 26 Ltd | Real estate | 2026 |
| DSC Carmat Limited | Construction | 2011 |
| DSC Packaging Ltd | Professional & scientific | 2002 |
| DSC24 Ltd | Financial services | 2024 |
| DSD Homes Ltd | Real estate | 2018 |
| DSD Properties & Refurb Ltd | Real estate | 2025 |
| DSE Trustees Limited | Administrative & support | 2022 |
| Dsec Limited | Construction | 2002 |
| Dsel Mechanical Ltd | Construction | 2025 |
| DSG Ironbridge Limited | Construction | 2021 |
| DSG Realisations Limited | Manufacturing | 1997 |
| DSG Surgery Limited | Health & social care | 2024 |
| Dsgn-Wise Limited | Professional & scientific | 2024 |
| DSH Building&Groundworks Ltd | Construction | 2020 |
| DSH Property Holdings Limited | Real estate | 2026 |
| DSI Drainage Limited | Professional & scientific | 2020 |
| DSI Ilkley Limited | Construction | 2015 |
| Dsjm Property Ltd | Financial services | 2025 |
| DSK Electrics Limited | Construction | 2023 |
| DSK Huncho Ltd | Professional & scientific | 2021 |
| DSL Digital Ltd | Professional & scientific | 2019 |
| DSL Dodgson Services Ltd | Construction | 2023 |
| DSL Group Ltd | Water & waste | 2015 |
| DSN Growth Ltd | Administrative & support | 2023 |
| Dspe UK Ltd | Information & communication | 2020 |
| DT Building Ltd | Construction | 2024 |
| DT Legal Services Limited | Professional & scientific | 2026 |
| DT Sports Ltd | Extraterritorial | 2025 |
| DTA Clothing Ltd | Wholesale & retail | 2018 |
| DTB Yorkshire Ltd | Professional & scientific | 2019 |
| Dtcarsales Ltd | Wholesale & retail | 2025 |
| DTE International Limited | Manufacturing | 2016 |
| DTF Commercials Ltd | Wholesale & retail | 2024 |
| DTN Media Limited | Professional & scientific | 2015 |
| Dtps Consultancy Limited | Professional & scientific | 2021 |
| Dtrt Consulting Limited | Administrative & support | 2024 |
| Dttf Productions Ltd | Other services | 2024 |
| DTW Construction Limited | Construction | 2024 |
| DTX Group Holdings Limited | Professional & scientific | 2024 |
| DTX Group Limited | Information & communication | 2019 |
| DTX Holdings Limited | Information & communication | 2008 |
| DTX Network Services Limited | Information & communication | 2009 |
| DTX Telecommunications Limited | Information & communication | 2000 |
| DUA Samar Ltd | Wholesale & retail | 2024 |
| Dual Analytics Limited | Information & communication | 2023 |
| Dual Fuel Limited | Professional & scientific | 2022 |
| Dualcon Dynamics Ltd | Construction | 2023 |
| Dualcon Engineering Ltd | Construction | 2022 |
| Dualcon Property Holdings Ltd | Real estate | 2026 |
| Dualcore Group Ltd | Real estate | 2026 |
| Duanrea Grill Ltd | Hospitality | 2025 |
| Dubai Gold Ltd | Extraterritorial | 2016 |
| Dubai Group Limited | Wholesale & retail | 2015 |
| Dube IT Consulting Ltd | Information & communication | 2025 |
| Dubit Limited | Information & communication | 2000 |
| Dubois Healthcare Services Ltd | Health & social care | 2017 |
| Dubova Transports Ltd | Transport & logistics | 2023 |
| Ducale (Oxshott) Limited | Construction | 2024 |
| Ducale (Woodlands) Limited | Construction | 2023 |
| Ducale Developments Limited | Construction | 2023 |
| Ducemus Property Group Ltd | Real estate | 2017 |