| Dats Engineering Ltd | Construction | 2023 |
| Dave Barnes (Car Sales) Ltd | Wholesale & retail | 2009 |
| Dave Barnes Properties Ltd | Real estate | 2026 |
| Davey's Estates Ltd | Real estate | 2025 |
| David Charnley Joinery Limited | Construction | 2003 |
| David Inman Environmental Management Limited | Professional & scientific | 2005 |
| David Meyler Groundworks Ltd | Construction | 2015 |
| David Telford Mortgages Ltd | Financial services | 2007 |
| Davidson Gray Business Solutions Limited | Administrative & support | 2012 |
| Davies Plastering Specialist Ltd | Construction | 2018 |
| Daviker Group LLP | | 2012 |
| Daviker Limited | Information & communication | 2004 |
| Davis Cleaning Services Limited | Administrative & support | 2021 |
| Dawn's Housing Limited | Real estate | 2019 |
| Dawods Ltd | Wholesale & retail | 2023 |
| Dawson Real Estates Limited | Financial services | 2013 |
| Dawtech IT Consultancy Limited | Information & communication | 2016 |
| Daycare Centres Limited | Education | 2022 |
| DB Holding Housing Ltd | Administrative & support | 2018 |
| DBE Engineering Services Limited | Manufacturing | 2026 |
| DBE Services Limited | Administrative & support | 2005 |
| DD Marketing and Sustainability Solutions Limited | Professional & scientific | 2024 |
| DE Biasio Concept Limited | Other services | 2026 |
| DE Radiance Retreat Ltd | Health & social care | 2026 |
| De-Veg Limited | Agriculture & fishing | 2016 |
| Deadline Tooling Services Limited | | 1983 |
| Deaf Village - North West CIC | Education | 2021 |
| Deaf Village Group Limited | Health & social care | 2022 |
| Deal Dash Ltd | Wholesale & retail | 2024 |
| Dealflow Network Ltd | Real estate | 2025 |
| Dealsdirectonline Limited | Wholesale & retail | 2020 |
| Dealvic Finance Limited | Financial services | 1956 |
| Debblers Ltd | Manufacturing | 2014 |
| Deca Investments Ltd | Real estate | 2026 |
| Deccom Investments Limited | | 1965 |
| Dedicated HD Limited | Administrative & support | 2018 |
| Deecom Ltd | Extraterritorial | 2025 |
| Deen Transport Limited | Transport & logistics | 2015 |
| Deennikah Ltd | Information & communication | 2026 |
| Deens Takeaway Blackburn Ltd | Hospitality | 2025 |
| Deens Takeaway Ltd | Hospitality | 2025 |
| Deep Presents Ltd | Arts & recreation | 2022 |
| Deeper Blue Marketing & Design Ltd | Professional & scientific | 2012 |
| Deephaus Limited | Professional & scientific | 2018 |
| Deer Hill Holdings Ltd | Financial services | 2023 |
| Dee’S Convenience Store Ltd | Wholesale & retail | 2023 |
| Degsys Ltd | Information & communication | 2007 |
| Degya Limited | Extraterritorial | 2010 |
| Dehgamia Investments Limited | Real estate | 2020 |
| Dejavu Estates Ltd | Other services | 2024 |
| Dekla Pharma Locums Ltd | Health & social care | 2024 |
| Delaney CPM Ltd | Real estate | 2024 |
| Delec Electrical Services Ltd | Construction | 2015 |
| Deli Delite Limited | Hospitality | 2011 |
| Delice Desserts Ltd | Hospitality | 2026 |
| DELICIOUSDESSERTS4YOU Limited | Wholesale & retail | 2025 |
| Delico Catering UK Limited | Hospitality | 2022 |
| Delights International Ltd | Manufacturing | 2026 |
| Delilah's Delights Ltd | Wholesale & retail | 2018 |
| Delivering Housing Solutions Limited | Professional & scientific | 2022 |
| Delm Hali Limited | Financial services | 2019 |
| Delphi AI Technologies Limited | Information & communication | 2026 |
| Delta Ecom Ltd | Information & communication | 2023 |
| Delta Mobile Limited | Wholesale & retail | 2025 |
| Delta Plus (U.K.) Limited | Wholesale & retail | 2006 |
| Delta Secure Ltd | Information & communication | 2023 |
| Delta Unified Solutions Ltd | Administrative & support | 2021 |
| Delta Vision Ltd | Wholesale & retail | 2013 |
| Delux Doors Limited | Construction | 2026 |
| Deluxe Details NW Ltd | Administrative & support | 2024 |
| Deluxe Diamond Products Ltd | Administrative & support | 2003 |
| Deluxe Resin Holdings Ltd | Construction | 2026 |
| Demesne Plant Hire Limited | Wholesale & retail | 2015 |
| Denbrae Limited | Real estate | 1996 |
| Deniz Beauty Services Ltd | Other services | 2017 |
| Dental Design & Fit-Out Limited | Construction | 2023 |
| Dentiveli Ltd | Health & social care | 2013 |
| Denton Construction Limited | Construction | 2008 |
| Denzel Power Holdings Ltd | Financial services | 2023 |
| Denzel Power Utilities Ltd | Construction | 2022 |
| Dependable Convenience Ltd | Wholesale & retail | 2024 |
| Dermabella Ltd | Other services | 2019 |
| Dermes Ltd | Other services | 2025 |
| DES Group Holdings Ltd | Financial services | 2024 |
| Deshi Diner Ltd | Hospitality | 2025 |
| Desi Avenue Ltd | Hospitality | 2023 |
| Desi Culture Ltd | Wholesale & retail | 2025 |
| Desi Darbar Ltd | Hospitality | 2025 |
| Desi GAP Shap CIC | Education | 2023 |
| Desi Nibbles Ltd | Hospitality | 2021 |
| Desicor Solutions Ltd | Professional & scientific | 2008 |
| Design and Construction Ltd | Professional & scientific | 2024 |
| Design Environmental Consultancy Limited | Professional & scientific | 2020 |
| Designer Air Fresheners Ltd | Wholesale & retail | 2024 |
| Designer Clothing Company Limited | Wholesale & retail | 2018 |
| Designer Sofas for YOU Limited | Manufacturing | 2016 |
| Designerwear International Limited | Wholesale & retail | 2001 |
| Designonadime Limited | Real estate | 2026 |
| Designs by Kirsty Ltd. | Arts & recreation | 2014 |
| Designs by Rachel Elizabeth Limited | Construction | 2023 |