| Darkell Locum Medical Services Ltd | Health & social care | 2019 |
| Darlaston Printers Limited | Manufacturing | 1977 |
| Darlaston Town (1874) Football Club C.I.C. | Arts & recreation | 2013 |
| Darling Dogs Ltd | Other services | 2025 |
| Darling Property Limited | Real estate | 2007 |
| Darrow Engineering Ltd | Manufacturing | 2026 |
| Darul Arqam Education and Training Centre Ltd | Education | 2011 |
| Darwyn Homes Ltd | Construction | 2021 |
| DAS EFX Electrical Installations Ltd | Construction | 2011 |
| DAS Wellness Ltd | Transport & logistics | 2022 |
| Dashchuff Ltd | Administrative & support | 2024 |
| Dasmesh(P) Ltd | Construction | 2023 |
| Daso Group Limited | Wholesale & retail | 2016 |
| Daswand Limited | Transport & logistics | 2014 |
| Data Bloom Business Support Ltd | Professional & scientific | 2026 |
| Data Centre Collaborative Limited | Administrative & support | 2024 |
| Data Contracts Specialist Maintenance Limited | Extraterritorial | 2001 |
| Datamig Solutions Ltd | Information & communication | 2012 |
| Datom Electrical Services Ltd | Construction | 2013 |
| DAV Property Investments Limited | Real estate | 2021 |
| Dave Parry Travel Limited | Transport & logistics | 1982 |
| Davenport Group Holdings Limited | Financial services | 2022 |
| David (AF) 5 Limited | Arts & recreation | 2022 |
| David Billingham Ltd | Professional & scientific | 2026 |
| David Butler Painting & Decorating Limited | Construction | 2002 |
| David Damian Limited | Wholesale & retail | 2021 |
| David Haulage Ltd | Transport & logistics | 2018 |
| David Matthews Driver Services Ltd | Transport & logistics | 2007 |
| David Matthews Group Limited | Professional & scientific | 2026 |
| David Paradine (Electrical) Limited | Construction | 2022 |
| David Paradine (MEP) Limited | Construction | 1974 |
| Davide Trans Ltd | Transport & logistics | 2026 |
| Davies & Davies Holdings Limited | Financial services | 2023 |
| Davies & Davies Properties Ltd | Construction | 2009 |
| Davies Bates Loft Conversions Ltd | Manufacturing | 2020 |
| Davies Odell Limited | Manufacturing | 2005 |
| Davies Shaw Electric Ltd | Construction | 2024 |
| Davison Automotive Testing Limited | Professional & scientific | 2011 |
| Davmar Properties Ltd | Real estate | 2020 |
| Davologistics Limited | Transport & logistics | 2026 |
| Dawat Pharma Limited | Professional & scientific | 2005 |
| Day & Son's Fabrication Ltd | Manufacturing | 2021 |
| Day Tanner Contractors Ltd | Administrative & support | 2013 |
| Daychem Group Limited | Financial services | 2024 |
| Daychem Ltd | Wholesale & retail | 2011 |
| Daydreams and Ice Creams Limited | Professional & scientific | 2022 |
| Dayrooms Limited | Wholesale & retail | 1982 |
| Dayus Engineering Services Limited | Administrative & support | 2005 |
| DAZ Engineering Limited | Professional & scientific | 2023 |
| DAZ Hardware Brickwork Ltd | Construction | 2022 |
| Dazpler Ltd | Transport & logistics | 2024 |
| Dazumref Ltd | Administrative & support | 2024 |
| DB Horizon Ltd | Professional & scientific | 2025 |
| DB Maintenance Limited | Construction | 2023 |
| DB Promotions (UK) Ltd | Professional & scientific | 2020 |
| DB Property Consultancy Ltd | Real estate | 2024 |
| DB Recycling Limited | Water & waste | 2017 |
| DB1 Home Improvements Ltd | Construction | 2024 |
| DBA Engineering Ltd | Professional & scientific | 2024 |
| DBG Unique Properties Ltd | Wholesale & retail | 2025 |
| Dboathouse Limited | Hospitality | 2025 |
| DC Metek Services Ltd | Professional & scientific | 2024 |
| DC Walsall Ltd | Hospitality | 2024 |
| DCL Watercare Limited | Water & waste | 2002 |
| DD Event & Site Services Limited | Administrative & support | 2021 |
| DD Financial Consultancy Limited | Professional & scientific | 2025 |
| DDC Consultancy Limited | Professional & scientific | 2026 |
| Ddnr Comms Ltd | Professional & scientific | 2024 |
| Ddnr Properties Ltd | Real estate | 2025 |
| DDR Property Ltd | Real estate | 2025 |
| DE Brit Limited | Construction | 2025 |
| DE Jollof Corp. Limited | Hospitality | 2026 |
| DE UK Builders Ltd | Construction | 2025 |
| Deadshift Ltd | Wholesale & retail | 2025 |
| Dealfuel Recruitment Ltd | Administrative & support | 2026 |
| Deamrev Ltd | Transport & logistics | 2024 |
| Dean Harper Ltd | Professional & scientific | 2014 |
| Dean-Walker Bateman Associates Limited | Professional & scientific | 2003 |
| Deaner AZ Ltd | Transport & logistics | 2024 |
| Debnik Retail Ltd | Administrative & support | 2017 |
| Deborah Owen Continuing Care Consultancy Ltd | Health & social care | 2025 |
| DEC Investments Limited | Financial services | 2018 |
| DEC Lettings Ltd | Real estate | 2018 |
| Decent Carpets Ltd | Wholesale & retail | 2024 |
| Deco Group Holdings Ltd | Financial services | 2017 |
| Deco Group Ltd | Wholesale & retail | 2005 |
| Deconstrukt Ltd | Professional & scientific | 2023 |
| Decor Haus Ltd | Manufacturing | 2025 |
| Decorate 4 U Ltd | Construction | 2024 |
| Decorbuild Construction Limited | Construction | 2018 |
| Dedolli Accommodation Ltd | Real estate | 2019 |
| Dee&Tee Care Agency Ltd | Health & social care | 2021 |
| Deeb Holdings Ltd | Real estate | 2018 |
| Deena Properties Ltd | Real estate | 2025 |
| Deep Beauty & Aesthetics Ltd | Other services | 2024 |
| Deep Bhullar Ltd | Transport & logistics | 2024 |
| Deep Clean Mart Ltd | Administrative & support | 2025 |
| Deep Delivery UK Limited | Transport & logistics | 2019 |
| Deep Motors Limited | Wholesale & retail | 2021 |
| Deep Real Estates Limited | Real estate | 2024 |