| Digital Solutions BD Ltd | Other services | 2019 |
| Digital Strom Limited | Information & communication | 2022 |
| Digital Technology Business School Limited | Education | 2023 |
| Digitalden Limited | Wholesale & retail | 2023 |
| Digitalis Trading Limited | Wholesale & retail | 2007 |
| Digitalsharp Marketing Services Limited | Professional & scientific | 2024 |
| Digitalskaa Ltd | Wholesale & retail | 2025 |
| Digitsec Security Services Ltd | Administrative & support | 2022 |
| Digixen Ltd | Professional & scientific | 2023 |
| Digi’S Marketing Ltd | Wholesale & retail | 2026 |
| Digpal Properties Limited | Real estate | 2026 |
| Dijit Services Limited | Information & communication | 2008 |
| DIL General Ltd | Construction | 2018 |
| DIL Properties & Investments Ltd | Real estate | 2025 |
| Dilimedic Ltd | Wholesale & retail | 2026 |
| Dilliwalah Films UK Ltd | Information & communication | 2022 |
| Dilshadmm Ltd | Wholesale & retail | 2025 |
| Dilshan Transport Group Limited | Transport & logistics | 2006 |
| Diltri Limited | Construction | 2025 |
| Dimesa Limited | Information & communication | 2014 |
| Dimpex Construction Limited | Construction | 2008 |
| DIN26 Limited | Wholesale & retail | 2026 |
| Dina Property Ltd | Real estate | 2022 |
| Dingo Karol 11 Ltd | Construction | 2023 |
| Dingo Karol Ltd | Construction | 2021 |
| Dinoel Ltd | Construction | 2014 |
| Dinstock Limited | Wholesale & retail | 1996 |
| Dion Structures Ltd | Construction | 2026 |
| Diop and Associates Ltd | Construction | 2024 |
| Dior Cleaning Services Ltd | Households | 2012 |
| Diplomat Chauffeurs Ltd | Transport & logistics | 2013 |
| Dipped in Sona Ltd | Wholesale & retail | 2026 |
| Direct Clearance Limited | Transport & logistics | 2021 |
| Direct D and R Limited | Hospitality | 2023 |
| Direct Plumbers Limited | Construction | 2023 |
| Direct Recovery Services Ltd | Transport & logistics | 2025 |
| Discordo Limited | Administrative & support | 2016 |
| Discount Shop UK Ltd | Wholesale & retail | 2020 |
| Disha Enterprise Limited | Hospitality | 2026 |
| Dispensational Gospel Mission Seed Centre Limited | Other services | 2020 |
| Disturbed Records Ltd | Information & communication | 2020 |
| Ditya Properties Limited | Real estate | 2026 |
| Diugan Limited | Construction | 2023 |
| Diverse Defence Limited | Extraterritorial | 2002 |
| Diverse Trading Limited | Wholesale & retail | 1998 |
| Diversity First Limited | Professional & scientific | 2000 |
| Divided Nations Ltd | Transport & logistics | 2019 |
| Divine Hair London Ltd | Other services | 2024 |
| Divine Nottingham Properties Ltd | Real estate | 2025 |
| Divine Quest Limited | Information & communication | 2017 |
| Divsyaa Vyusti Investments Ltd | Real estate | 2024 |
| Dixon and Grant Property Services Ltd | Real estate | 2008 |
| Diya Within Limited | Other services | 2018 |
| Dizitnow Ltd | Information & communication | 2014 |
| DJ Club CIC | Information & communication | 2025 |
| DJ Family Ltd | Real estate | 2023 |
| DJ Rental Properties Ltd | Real estate | 2025 |
| Dj's Coffee and Cakes Limited | Hospitality | 2024 |
| DJC Electrics Limited | Construction | 2010 |
| Djfit Foods and Technology Ltd | Hospitality | 2018 |
| DJL Group Ltd | Construction | 2023 |
| DJL Property Limited | Real estate | 2016 |
| DJM Homes Ltd | Real estate | 2021 |
| DJM Motors Limited | Wholesale & retail | 2021 |
| DJS Accommodations Limited | Hospitality | 2025 |
| DJS Construction Ltd | Construction | 2017 |
| DJS Development Ltd | Real estate | 2025 |
| DJW Blues Ltd | Construction | 2025 |
| DK INT Management Limited | Other services | 2019 |
| DK Properties Solutions Limited | Real estate | 2015 |
| DK Thermal Insulation Ltd | Construction | 2019 |
| DKB19KTD Limited | Construction | 2021 |
| DKJ Property Management Limited | Real estate | 2019 |
| DL Micropigmentation & Aesthetics Ltd | Other services | 2023 |
| DLA Home Design Ltd | Construction | 2020 |
| DLD Building Ltd | Construction | 2022 |
| DLD Logistics Ltd | Transport & logistics | 2019 |
| DLH Electrical(Uk) Ltd | Construction | 2011 |
| DLT Electrical Ltd | Construction | 2019 |
| Dlux Constructions Ltd | Construction | 2025 |
| DM & a Management Services Ltd | Construction | 2014 |
| DM Concept Company Ltd | Construction | 2018 |
| DM Elite Services Limited | Construction | 2024 |
| DM Holdings London Ltd | Real estate | 2024 |
| DM Legal Ltd | Professional & scientific | 2015 |
| DM Sarbu Ltd | Construction | 2025 |
| DM7 Security Services Limited | Administrative & support | 2023 |
| DMB Roofing Limited | Construction | 2025 |
| DMG Fitness Limited | Arts & recreation | 2025 |
| DMH Steel Processing Limited | Professional & scientific | 2017 |
| Dmitrus Ltd | Construction | 2015 |
| DML Insulation Ltd | Construction | 2014 |
| DMM IT Ltd | Information & communication | 2021 |
| Dmore Limited | Health & social care | 2022 |
| Dmplifts Ltd | Professional & scientific | 2025 |
| DMR General Building Limited | Construction | 2007 |
| DMW Trading Consultancy Ltd | Administrative & support | 2024 |
| DMZ Flooring Ltd | Construction | 2017 |
| DN Construct Limited | Construction | 2023 |
| DNA Kids Limited | Arts & recreation | 2004 |