| Diamond Libra Holdings Limited | Extraterritorial | 2018 |
| Diamond Libra Limited | Financial services | 2002 |
| Diamond Libra Property Limited | Extraterritorial | 2018 |
| Diamond Life Development Ltd | Real estate | 2018 |
| Diamond Life Holdings Ltd | Financial services | 2018 |
| Diamond Lindsaygrace Ltd | Public administration | 2019 |
| Diamond Newland Ltd | Real estate | 2009 |
| Diamond Santos Holdings Ltd | Financial services | 2025 |
| Diamond Spa Limited | Other services | 2014 |
| Diamond Sparkle Cleaning Services Ltd | Administrative & support | 2021 |
| Diamond UK Developments Ltd | Real estate | 2018 |
| Diamond Valeting Services Ltd | Other services | 2021 |
| Diana Cleaning Services Ltd | Administrative & support | 2021 |
| Diandshe James Homes Ltd | Construction | 2020 |
| Diandshe James Investments Ltd | Construction | 2021 |
| Diaspora Connect Ltd | Public administration | 2018 |
| Diaspora Mortgages Ltd | Financial services | 2026 |
| Dickens Court Management Company Limited | Households | 1986 |
| Dickos Hospitality Ltd | Hospitality | 2024 |
| Diem Centre Ltd | Health & social care | 2020 |
| Diep Holdings Ltd | Financial services | 2022 |
| DIG IT Groundworks Ltd | Construction | 2024 |
| Dige PVT Ltd | Transport & logistics | 2022 |
| Digidec Limited | Professional & scientific | 2001 |
| Digint Consolidated Limited | Information & communication | 2025 |
| Digisocial Ltd | Professional & scientific | 2020 |
| Digispire Solutions Limited | Information & communication | 2025 |
| Digital Entrepreneur Hub Ltd | Wholesale & retail | 2023 |
| Digital 24-7 Ltd | Administrative & support | 2013 |
| Digital Assets Management & Solutions Ltd | Administrative & support | 2016 |
| Digital Attitude Ltd | Information & communication | 2020 |
| Digital Blockchain Innovations Limited | Professional & scientific | 2022 |
| Digital Christianity Ltd | Information & communication | 2018 |
| Digital Craft Studio Limited | Information & communication | 2020 |
| Digital Druids Ltd | Administrative & support | 2020 |
| Digital Media Marketing Ltd | Manufacturing | 2003 |
| Digital Move Ltd | Real estate | 2014 |
| Digital Paint Limited | Information & communication | 2003 |
| Digital Saints Limited | Information & communication | 2009 |
| Digital Services Networking Limited | Information & communication | 2006 |
| Digital Solutions Media Ltd | Other services | 2023 |
| Digital Stylist Limited | Information & communication | 2023 |
| Digital Technology Trading Ltd | Wholesale & retail | 2013 |
| Digital-Ade Limited | Professional & scientific | 2025 |
| Digitalception Ltd | Wholesale & retail | 2024 |
| Digitalfutureway Limited | Information & communication | 2019 |
| Digitalrealmgb Ltd | Wholesale & retail | 2025 |
| Digitalsimpl. Ltd | Professional & scientific | 2015 |
| Digitise Skills Ltd | Education | 2025 |
| Dignity Healthcare Limited Company Limited | Health & social care | 2014 |
| Digo Construction Ltd | Construction | 2022 |
| Digo Properties Ltd | Real estate | 2024 |
| Digodo Trans Ltd | Administrative & support | 2017 |
| Digroundworks Ltd | Construction | 2026 |
| Diiaz Logistics Ltd | Transport & logistics | 2020 |
| Dijahayat Limited | Real estate | 2026 |
| Dilani Signs Ltd | Administrative & support | 2024 |
| Dilsha Limited | Wholesale & retail | 2006 |
| Dilusso Electrical Ltd | Construction | 2022 |
| DIM Realty Limited | Real estate | 2025 |
| Dimal Limited | Real estate | 2024 |
| Dimanche Ltd | Professional & scientific | 2026 |
| Dimants Building Services Limited | Construction | 2023 |
| Dimension 3D Limited | Manufacturing | 2022 |
| Dimika Ltd | Transport & logistics | 2013 |
| Dimingo Healthcare Limited | Health & social care | 2014 |
| Dinaburg Limited | Wholesale & retail | 2016 |
| Dine Pilot Limited | Hospitality | 2011 |
| Ding Tea Northampton Ltd | Hospitality | 2021 |
| Dinh Tech Ltd | Information & communication | 2026 |
| Diningfurni Limited | Wholesale & retail | 2025 |
| Dinisal Limited | Real estate | 1977 |
| Dino Construct Ltd | Construction | 2025 |
| Dinopd Haulage Ltd. | Transport & logistics | 2017 |
| Dion Lindsay Consulting Ltd | Information & communication | 2010 |
| Dionisie Ltd. | Transport & logistics | 2023 |
| Diphold Limited | | 1987 |
| Direct (Uk-Bd) Ltd | Wholesale & retail | 2019 |
| Direct Analysis Limited | Information & communication | 1995 |
| Direct Building Supply Limited | Wholesale & retail | 2025 |
| Direct Care 24/7 Services Limited | Health & social care | 2023 |
| Direct Delivery Danyel Ltd | Transport & logistics | 2024 |
| Direct Manufacturing Group Ltd | Wholesale & retail | 2024 |
| Direct Performance Limited | Wholesale & retail | 2020 |
| Direct Performance Motorsport Limited | Wholesale & retail | 2022 |
| Direct Property Services UK Limited | Real estate | 2009 |
| Direct Restoration Ltd | Wholesale & retail | 2020 |
| Direct Route Spedition Ltd | Transport & logistics | 2014 |
| Direct Same Day Solutions Ltd | Transport & logistics | 2016 |
| Directway Courier Ltd | Transport & logistics | 2025 |
| Directway Solutions Ltd | Transport & logistics | 2026 |
| Dirft Africa Limited | Extraterritorial | 2024 |
| Dirliz Events Ltd | Hospitality | 2024 |
| Dirt Busters Ltd | Administrative & support | 2025 |
| Discday Limited | Construction | 2003 |
| Discount Appliances and Furniture Ltd | Wholesale & retail | 2018 |
| Discount Driving School Limited | Education | 2025 |
| Discovering Dementia Ltd | Information & communication | 2021 |
| Discovery Walking Guides Limited | Information & communication | 1994 |
| Dise Automotive Ltd | Wholesale & retail | 2026 |