| Dawn AID | Administrative & support | 2012 |
| Dawn Building & Groundworks Ltd | Construction | 2011 |
| Dawn Freight Ltd | Transport & logistics | 2023 |
| Dawran Ltd | Hospitality | 2024 |
| Dawson's Site Services Limited | Transport & logistics | 2016 |
| DAX Automation Ltd | Wholesale & retail | 2023 |
| Daycare Nurseries Ltd | Administrative & support | 2000 |
| DAZ Properties London Ltd | Households | 2023 |
| Dazzers Maintenance Ltd | Construction | 2026 |
| Dazzle Detailing Ltd | Administrative & support | 2025 |
| Dazzling Futures Limited | Health & social care | 2022 |
| Dazzling Futures Services Community Interest Company | Hospitality | 2022 |
| DB Automotive Solutions Limited | Wholesale & retail | 2015 |
| DB Autos and Sons Limited | Wholesale & retail | 2018 |
| DB Construction Ltd | Construction | 2019 |
| DB Fostering Advisory Service Ltd | Health & social care | 2025 |
| DB Marketing Ltd | Information & communication | 2025 |
| DBC Freehold Ltd | Households | 2023 |
| DBR Farming Services Limited | Agriculture & fishing | 2024 |
| Dbspedition Ltd | Construction | 2018 |
| DC 1888 China Limited | Manufacturing | 2025 |
| DC Assessment & Training Limited | Administrative & support | 2022 |
| DC Building Solutions (Stoke) Limited | Construction | 2024 |
| DC Intuitus Ltd | Professional & scientific | 2025 |
| DC Motorcycles MOT & Services Limited | Wholesale & retail | 2023 |
| DC Plumbing & Heating Contractors Limited | Construction | 2016 |
| DC Property and Lettings Limited | Real estate | 2018 |
| DC Transport and Distributions Services Ltd | Transport & logistics | 2023 |
| DC3 Homes Ltd | Construction | 2026 |
| DCC Care Company Group Ltd | Health & social care | 2026 |
| DCC Developments Ltd | Real estate | 2025 |
| DCC Domiciliary Care Company Ltd | Health & social care | 2021 |
| DCF Consolidated Holdings Ltd | Construction | 2016 |
| Dcjm Consulting Limited | Information & communication | 2016 |
| DDB Consulting Limited | Professional & scientific | 2005 |
| DDC Estates Ltd | Real estate | 2020 |
| Ddeaflinks - Staffordshire | Administrative & support | 1997 |
| Ddmd Limited | Wholesale & retail | 2022 |
| Ddomy Pizza Ltd | Manufacturing | 2021 |
| DDPT5 Ltd | Transport & logistics | 2025 |
| Ddss Holding Ltd | Wholesale & retail | 2024 |
| Ddss Ltd | Wholesale & retail | 2021 |
| DDT Limited | Information & communication | 2007 |
| DE Burger House Limited | Hospitality | 2024 |
| DE Craft Ltd | Professional & scientific | 2024 |
| DE Realisations (001) Limited | Manufacturing | 1976 |
| DE Safety Services Ltd | Public administration | 2025 |
| De&No Limited | Transport & logistics | 2018 |
| De-Stat Limited | Wholesale & retail | 2007 |
| Dead Centre Construction (SOT) Limited | Construction | 2021 |
| Deal & Drive Car Hire Limited | Wholesale & retail | 2025 |
| Deal 4 Wheels Ltd | Financial services | 2020 |
| Deal Online Limited | Wholesale & retail | 2021 |
| Deal Transport Ltd | Transport & logistics | 2024 |
| Dealdone Ltd | Wholesale & retail | 2024 |
| Dealer HQ Ltd | Wholesale & retail | 2025 |
| Dean Adams Holdings Ltd | Public administration | 2025 |
| Dean Brook Customs & Comms Ltd | Wholesale & retail | 2021 |
| Deann Capital Limited | Real estate | 2023 |
| Deanwood Estates Limited | Real estate | 2005 |
| Deborah Wragg Ltd. | Professional & scientific | 2011 |
| DEC Continuous Process Ltd | Manufacturing | 2003 |
| Deceneu Ltd | Transport & logistics | 2016 |
| Decent People Ltd | Professional & scientific | 2025 |
| Decima One Limited | Information & communication | 2019 |
| Decorabay Ltd | Wholesale & retail | 2026 |
| DEE SET Confectionery Limited | Wholesale & retail | 2001 |
| Deelicious Fast Food Ltd | Hospitality | 2024 |
| Deen Distribution Limited | Wholesale & retail | 2025 |
| Deep-Cleaning UK Limited | Other services | 2006 |
| Deeps Solutions Limited | Information & communication | 2018 |
| Deeziiziit Cleaning Limited | Administrative & support | 2025 |
| Deeziiziit Digital Marketing Limited | Professional & scientific | 2025 |
| Define Aesthetics With KAY Ltd | Health & social care | 2026 |
| Definition Nutrition Limited | Wholesale & retail | 2014 |
| DEH Accountancy Services Ltd | Professional & scientific | 2011 |
| DEH Equipment Hire Limited | Administrative & support | 2020 |
| DEH Property Management Services Ltd | Households | 2023 |
| DEL Consultancy International Ltd | Education | 2026 |
| Delamere Investment Company Limited | Real estate | 2023 |
| Delish Fried Chicken Ltd | Hospitality | 2018 |
| Delite Properties Limited | Households | 2023 |
| Deliveraffles Ltd | Arts & recreation | 2024 |
| Delivery Construction Ltd | Construction | 2023 |
| Delivery MAN DAN Ltd | Transport & logistics | 2025 |
| Delma Clothing Ltd | Wholesale & retail | 2023 |
| Delphos Ltd | Information & communication | 2017 |
| Delta for Trading Ltd | Wholesale & retail | 2018 |
| Delta Power Systems (UK) Limited | Professional & scientific | 2017 |
| DELTA4 Solutions Limited | Other services | 2017 |
| Deltamax Limited | Construction | 2020 |
| Deluxe Travels Stoke Limited | Transport & logistics | 2015 |
| Demac II Market Place [D2MP] Ltd | Wholesale & retail | 2024 |
| Denim Chicken Merchandise Ltd | Wholesale & retail | 2020 |
| Denis Haulage Ltd | Transport & logistics | 2019 |
| Denise Coates Foundation | Other services | 2012 |
| Denmark Motor Limited | Transport & logistics | 2025 |
| Dennis Freight Limited | Transport & logistics | 1979 |
| Dent AID (Staffs) Limited | Wholesale & retail | 2013 |
| Dentopharm Limited | Health & social care | 2017 |