| Diamond Serenity Ltd | Wholesale & retail | 2021 |
| Diamond Waste OIL Limited | Water & waste | 2024 |
| Diamondrock Construction Ltd | Construction | 2026 |
| Diamoura Ltd | Wholesale & retail | 2026 |
| Diapo Works Ltd | Professional & scientific | 2024 |
| Diaspora Management Solutions Ltd | Financial services | 2012 |
| Diasporadreams Ltd | Wholesale & retail | 2025 |
| Diavazo Greek Books Limited | Wholesale & retail | 2018 |
| Didarchi Ltd | Professional & scientific | 2019 |
| Didee - Diva Hair Salon Ltd | Other services | 2024 |
| Didivail Ltd | Construction | 2014 |
| Diesel Dogs Ltd | Information & communication | 2019 |
| Dieu ANH Limited | Other services | 2023 |
| DIF Utilities Ltd | Construction | 2019 |
| Digidel Marketing Ltd | Extraterritorial | 2019 |
| Digipeach Design Ltd | Professional & scientific | 2022 |
| Digipot IT Consulting Ltd | Information & communication | 2023 |
| Digispring Ltd | Wholesale & retail | 2024 |
| Digital Equity Solutions Limited | Information & communication | 2024 |
| Digital Imprint Ltd | Professional & scientific | 2020 |
| Digital Online Ltd | Professional & scientific | 2024 |
| Digital Works Limited | Professional & scientific | 2017 |
| Digitalhealthstudio Ltd | Information & communication | 2019 |
| DIL Property Investments Limited | Real estate | 2024 |
| Dilalin Limited | Real estate | 2023 |
| Dilapidation Contracts Ltd | Construction | 2024 |
| Dilek Araz Construction Limited | Construction | 2024 |
| Dilek Catering Ltd | Hospitality | 2026 |
| Diligent Lighting Limited | Extraterritorial | 2010 |
| Diligent Resources Limited | Wholesale & retail | 2005 |
| Dills Street Food Limited | Hospitality | 2021 |
| DIM Electric Ltd | Construction | 2022 |
| DIM Utilities Ltd | Construction | 2025 |
| Dimo Mihaylov Limited | Wholesale & retail | 2019 |
| Dimples Leisure Limited | Arts & recreation | 2013 |
| DIN Pro Ltd | Wholesale & retail | 2023 |
| Dinc Property Ltd | Real estate | 2025 |
| Dino & Sons Limited | Transport & logistics | 2023 |
| Diodhna Real Estate Ltd | Real estate | 2025 |
| Dionysius Importers Ltd | Wholesale & retail | 2012 |
| Diora's Cafe Lounge Ltd | Hospitality | 2021 |
| Diotec Ltd | Transport & logistics | 2025 |
| Direct Affairs Ltd | Administrative & support | 2025 |
| Direct Brothers Ltd | Construction | 2018 |
| Direct Compass Limited | Information & communication | 2018 |
| Direct Heating Ltd | Construction | 2024 |
| Direct Lofts Ltd | Construction | 2023 |
| Direct Mole Limited | Construction | 1998 |
| Direct Motor Sales Limited | Wholesale & retail | 2021 |
| Direct Sale AI Ltd | Information & communication | 2026 |
| DIRECT2U Care Limited | Health & social care | 2020 |
| Discount Mortgages Limited | Financial services | 2006 |
| Dispersion Gaming Limited | Information & communication | 2026 |
| Distinct Magazine Limited | Information & communication | 2023 |
| Distinctive Concepts London Ltd | Manufacturing | 2023 |
| Distinctive Objects Ltd | Education | 2022 |
| District South Limited | Construction | 2007 |
| Divacoast Limited | Real estate | 2007 |
| Diverse RSE Limited | Education | 2017 |
| Diverse Scope Limited | Education | 2025 |
| Divine Serenity Homes Limited | Real estate | 2025 |
| Divine Star Limited | Health & social care | 2012 |
| Divine Women Network Limited | Health & social care | 2017 |
| Divine-Kate Services Limited | Health & social care | 2021 |
| DIVINE3C Limited | Health & social care | 2020 |
| Divinity Homecare Ltd | Public administration | 2024 |
| Dizano Life Ltd | Wholesale & retail | 2023 |
| Dizzy Doughnut Productions Ltd | Information & communication | 2023 |
| DJ Khriz Promotions Limited | Other services | 2017 |
| DJ321 Limited | Transport & logistics | 2025 |
| DJB Consulting Limited | Professional & scientific | 2021 |
| Djemal Limited | Construction | 2024 |
| DJK Trading Ltd | Wholesale & retail | 2019 |
| DJV Electrical Services Limited | Construction | 2007 |
| DK & AR Properties Ltd | Real estate | 2022 |
| DK Nails Wednesbury Limited | Other services | 2024 |
| DKA Heating Limited | Construction | 2017 |
| DKA Homes Limited | Real estate | 2022 |
| Dkbl Consulting Ltd | Professional & scientific | 2018 |
| Dkdh Limited | Other services | 2023 |
| DKN Services Limited | Construction | 2007 |
| Dlmj Limited | Health & social care | 2023 |
| DLS Supplies Ltd. | Wholesale & retail | 2020 |
| Dlsk Services Ltd | Professional & scientific | 2016 |
| DM Financial Ltd | Financial services | 2017 |
| DM Healthcare Services Ltd | Administrative & support | 2021 |
| DM Solutions Ltd | Information & communication | 2025 |
| DM Vintage Ltd | Wholesale & retail | 2025 |
| Dmar (Investments) Ltd | Construction | 2022 |
| Dmbula Limited | Construction | 2024 |
| DMC Furniture Design Ltd | Wholesale & retail | 2020 |
| DMC Realty Ltd | Real estate | 2024 |
| DML Building Ltd | Construction | 2023 |
| DML Plumbing Ltd | Construction | 2022 |
| DML Property Services Ltd | Construction | 2017 |
| DMR TM Ltd | Transport & logistics | 2021 |
| DNA Maintenance Ltd | Administrative & support | 2025 |
| DND Construction Ltd | Construction | 2026 |
| DNG Associates Ltd | Professional & scientific | 2017 |
| DNK Engineering Ltd | Manufacturing | 2016 |