| Dream House MCR Ltd | Real estate | 2025 |
| Dream on a Stick Limited | Information & communication | 2021 |
| Dreamfox Ltd | Wholesale & retail | 2023 |
| Driive Consulting Limited | Financial services | 2016 |
| Drill Group (UK) Limited | Wholesale & retail | 2024 |
| Drilllab Limited | Professional & scientific | 2019 |
| Drink NET Zero Ltd | Professional & scientific | 2024 |
| Driven Brands Denmark Holdings Limited | Wholesale & retail | 2016 |
| Driven Brands Financing Limited | Wholesale & retail | 2014 |
| Driven Brands Limited | Wholesale & retail | 2014 |
| Driverlinkdirect Ltd | Transport & logistics | 2025 |
| Driveview Limited | Professional & scientific | 2009 |
| Drizzy Floors Ltd | Construction | 2026 |
| DRR Technology Solutions Limited | Information & communication | 2026 |
| DRS Industries Ltd. | Administrative & support | 2011 |
| Drukirk Consulting Limited | Information & communication | 2023 |
| Drumbeat Creative Limited | Administrative & support | 2003 |
| Drumbeaters Limited | Administrative & support | 2025 |
| Drumnee Consulting Ltd | Professional & scientific | 2023 |
| DS & MS Properties LLP | | 2004 |
| DS Bidco Limited | Financial services | 2025 |
| DS Butler Consulting Limited | Professional & scientific | 2023 |
| DS L&P Limited | Administrative & support | 2024 |
| DS Performance Chef Ltd | Hospitality | 2018 |
| DSA Global Logistics Limited | Transport & logistics | 2017 |
| DSD Bolton Ltd | Health & social care | 2025 |
| Dseleven.Ltd Limited | Real estate | 2025 |
| Dsgs Consulting Ltd | Professional & scientific | 2019 |
| DSP Tech Limited | Information & communication | 2015 |
| Dsten Ltd | Real estate | 2025 |
| DT Kitchen Ltd | Hospitality | 2024 |
| DTA Ventures Ltd | Health & social care | 2025 |
| Dualite-Aura Ltd | Professional & scientific | 2026 |
| Dubl Limited | Administrative & support | 2011 |
| Dublok (UK) Limited | Manufacturing | 1966 |
| Duca Knights Ltd | Professional & scientific | 2024 |
| Ducie Digital Ltd | Professional & scientific | 2023 |
| Duck & Hedges Group Ltd | Professional & scientific | 2014 |
| Duck and Hive Limited | Information & communication | 2019 |
| Duck Duck Kale Ltd | Manufacturing | 2019 |
| Duke Street Dental Centre Limited | Health & social care | 2010 |
| Dukia Property Limited | Real estate | 2025 |
| Dunes HR Limited | Professional & scientific | 2024 |
| Dunesonic UK Limited | Information & communication | 2025 |
| Dunge Farm Management Limited | Real estate | 2004 |
| Dunham Accounting Limited | Professional & scientific | 2010 |
| Dunham Bidco Limited | Financial services | 2025 |
| Dunham Building & Civil Engineering Limited | Construction | 2005 |
| Dunham Building Group Limited | Financial services | 2022 |
| Dunham Care (Altrincham) Limited | Financial services | 2020 |
| Dunham Care (Bowdon) Limited | Real estate | 2023 |
| Dunham Care (C&C) Jvco Limited | Real estate | 2026 |
| Dunham Care (Canterbury) Opco Limited | Real estate | 2026 |
| Dunham Care (Cheadle Hulme) Limited | Real estate | 2023 |
| Dunham Care (Childwall) Limited | Financial services | 2023 |
| Dunham Care (Congleton) Holdco Limited | Financial services | 2025 |
| Dunham Care (Congleton) Limited | Real estate | 2025 |
| Dunham Care (Congleton) Opco Limited | Real estate | 2025 |
| Dunham Care (Coxheath) Opco Limited | Real estate | 2026 |
| Dunham Care (Hartford) Limited | Real estate | 2018 |
| Dunham Care (Heaton Mersey) Limited | Real estate | 2022 |
| Dunham Care (Herne Bay) Limited | Real estate | 2023 |
| Dunham Care (Herne Bay) Opco Limited | Real estate | 2023 |
| Dunham Care (Rayleigh) Limited | Real estate | 2025 |
| Dunham Care (Whitstable) Holdco Limited | Real estate | 2026 |
| Dunham Care (Whitstable) Jvco Limited | Construction | 2026 |
| Dunham Care (Whitstable) Limited | Real estate | 2026 |
| Dunham Care (Wilmslow) Limited | Real estate | 2024 |
| Dunham Care (Wilmslow) Opco Limited | Health & social care | 2024 |
| Dunham Care Altrincham (Opco) Limited | Health & social care | 2021 |
| Dunham Care Bowdon (Opco) Limited | Health & social care | 2023 |
| Dunham Care Corporate Limited | Professional & scientific | 2025 |
| Dunham Care Group Holdings Limited | Financial services | 2019 |
| Dunham Care Projects Holdco Limited | Real estate | 2023 |
| Dunham Care Whitstable (Opco) Limited | Health & social care | 2026 |
| Dunham Chase Management Company Limited | Real estate | 2002 |
| Dunham Construction Management Limited | Administrative & support | 2021 |
| Dunham Consulting Rooms Limited | Health & social care | 1998 |
| Dunham Court (Bowdon) Management Company Limited | Households | 2000 |
| Dunham Ecology Ltd | Professional & scientific | 2024 |
| Dunham Events Limited | Hospitality | 2022 |
| Dunham Fencing Supplies Limited | Manufacturing | 2023 |
| Dunham Group Limited | Financial services | 2005 |
| Dunham Holdco Limited | Financial services | 2025 |
| Dunham Lawn Limited | Households | 1969 |
| Dunham Mount Freehold Company Limited | Real estate | 2014 |
| Dunham Mount Management Company Limited | Households | 2012 |
| Dunham Partners Limited | Real estate | 2026 |
| Dunham Physio Ltd | Health & social care | 2025 |
| Dunham Rise (Altrincham) Management Co. Limited | Households | 1977 |
| Dunham Rise Management Company Limited | Administrative & support | 2005 |
| Dunham Risk Management Limited | Financial services | 2024 |
| Dunham Wealth Limited | Financial services | 1998 |
| Dunlin Property Management Limited | Hospitality | 2018 |
| Dunnell Holdings Ltd | Real estate | 2024 |
| Dunnell Ltd | Financial services | 2021 |
| Dunnell Properties Ltd | Real estate | 2024 |
| Durham Business Consulting UK Limited | Administrative & support | 2023 |
| Durning Road RTM Company (Edgehill) Limited | Households | 2018 |
| Dust Productions Ltd | Arts & recreation | 2009 |