| DIN Investments Ltd. | Real estate | 2024 |
| Dinahcomposite Ltd | Manufacturing | 2026 |
| Dinassia Co., Ltd | Wholesale & retail | 2024 |
| Dingfeng Shoes and BAG Co., Ltd | Wholesale & retail | 2024 |
| Dingqi International Trading Co., Ltd | Wholesale & retail | 2023 |
| Dingsen International Trade Co., Ltd | Extraterritorial | 2023 |
| Dingzhou Shengbo Metal Products Co., Ltd | Manufacturing | 2024 |
| Dini London Limited | Wholesale & retail | 2023 |
| Dino's Barbers Ltd | Other services | 2013 |
| Dinuco Ltd | Manufacturing | 2023 |
| Dipalma Properties Ltd | Real estate | 2020 |
| Dirac Drives Limited | Professional & scientific | 2021 |
| Direct Absorb Ltd | Wholesale & retail | 2024 |
| Direct Action Property Group Ltd | Real estate | 2024 |
| Direct Communications Group Limited | Professional & scientific | 1998 |
| Direct Cycle Limited | Wholesale & retail | 2013 |
| Direct Farm Marketing Limited | Agriculture & fishing | 1996 |
| Direct Travel Cambridge Limited | Transport & logistics | 2025 |
| DIRECT2FARMS Ltd | Information & communication | 2026 |
| Directed Systems Limited | Professional & scientific | 2014 |
| Dirichlet Ltd | Information & communication | 2021 |
| Dirobee Ltd | Wholesale & retail | 2020 |
| Dirot Limited | Real estate | 2017 |
| Disc Express Ltd | Administrative & support | 2025 |
| Discover Cultural Media Limited | Information & communication | 2024 |
| Discovery Pharma Consulting (UK) Ltd | Professional & scientific | 2019 |
| Dise Limited | Administrative & support | 2019 |
| Displaylink (UK) Limited | Professional & scientific | 2003 |
| Displays and Graphics Ltd | Professional & scientific | 2019 |
| Disposable Medical Instruments Limited | Other services | 2007 |
| Disruptrs Group LLP | | 2020 |
| Dissa Restaurant Limited | Hospitality | 2025 |
| Distinctive Security Consultancy Limited | Administrative & support | 2025 |
| Distractionware Limited | Information & communication | 2010 |
| Distribind Limited | Information & communication | 2018 |
| Distrify Ltd | Wholesale & retail | 2023 |
| Ditmore Technologies Ltd. | Extraterritorial | 2026 |
| Ditton Lane Management Co. Limited | Real estate | 1987 |
| Ditton Software Ltd | Information & communication | 2019 |
| Diva Hair Play Ltd | Wholesale & retail | 2018 |
| Diverse Technologies and Systems Limited | Professional & scientific | 1984 |
| Divine HUE Decorators Limited | Construction | 2025 |
| Divine Roofing Solutions Ltd | Construction | 2026 |
| Dixon Decorators Ltd | Construction | 2022 |
| Dixon International Group Limited | Manufacturing | 1984 |
| Dixon International Limited | Professional & scientific | 1960 |
| Dixon Malt Company Limited (the) | Professional & scientific | 1930 |
| Dixos Consulting Limited | Professional & scientific | 2025 |
| DIY Hub Limited | Wholesale & retail | 2023 |
| DIY Ltd | Extraterritorial | 2021 |
| DJ 1984 Ltd | Construction | 2020 |
| DJ Reynolds Ltd | Construction | 2013 |
| Django Investments Limited | Financial services | 2021 |
| Djanre Essentials Limited | Wholesale & retail | 2025 |
| Djanre Group Limited | Professional & scientific | 2025 |
| Djelley Ltd | Arts & recreation | 2020 |
| DJM Property Rental LLP | | 2023 |
| Djudjo Ltd | Construction | 2020 |
| DJY Holdings Limited | Information & communication | 2026 |
| DK Electrical (Cambridge) Ltd | Construction | 2017 |
| DK Environment (Europe) Co., Ltd | Manufacturing | 2022 |
| DK Health Ltd | Professional & scientific | 2012 |
| DK Metals Private Limited | Wholesale & retail | 2025 |
| DKC Mech Limited | Manufacturing | 2015 |
| DKG Ltd | Administrative & support | 2010 |
| Dknv Property Services Limited | Real estate | 2025 |
| Dksg Bespoke Limited | Wholesale & retail | 2014 |
| DL Building & Decorating Ltd | Construction | 2024 |
| DL Property Investment UK Ltd | Real estate | 2025 |
| DL Well Ltd | Real estate | 2018 |
| Dlamp Limited | Information & communication | 2015 |
| DLJ Partners Ltd | Mining & quarrying | 2004 |
| DLS Letting and Management Limited | Real estate | 2022 |
| DM Conversion Ltd | Manufacturing | 2024 |
| DM Decoration Ltd | Wholesale & retail | 2023 |
| DM Paradise Consulting Ltd | Professional & scientific | 2025 |
| DM to Deals Limited | Extraterritorial | 2025 |
| Dmap Limited | Information & communication | 1989 |
| Dmappliances Ltd | Other services | 2024 |
| DMB Finance Ltd | Professional & scientific | 2025 |
| DMB Precision Ltd | Manufacturing | 2024 |
| DMG Aero Ltd | Manufacturing | 2025 |
| DMG Developments (Clapham) Limited | Professional & scientific | 2004 |
| DMG Developments (London) Limited | Professional & scientific | 2001 |
| DMG Groundworks Limited | Construction | 2019 |
| DMH Consulting Ltd | Professional & scientific | 2023 |
| DMI Ventures (UK) Ltd | Financial services | 2025 |
| DMJ Restaurants Limited | Hospitality | 1998 |
| DMT Transport Global Limited | Transport & logistics | 2025 |
| Dnevo Partners Ltd | Administrative & support | 2023 |
| DNO Import and Export Co., Limited | Wholesale & retail | 2024 |
| DNP Real Estate Limited | Real estate | 2023 |
| Dnsalfy Ltd | Manufacturing | 2025 |
| DO MI SOL Limited | Education | 2025 |
| DO Real Estate Ltd | Real estate | 2024 |
| Dobo Biotechnology Co., Ltd | Wholesale & retail | 2022 |
| Dobsons Quay Management Company Limited | Households | 1999 |
| Dobton Ltd | Extraterritorial | 2019 |
| DOC Orange Ltd | Education | 2017 |
| Dock-Air Limited | Manufacturing | 2024 |