| Dnsl Limited | Wholesale & retail | 2017 |
| Doctor Junior Ltd | Wholesale & retail | 2024 |
| Doggy Divine Limited | Other services | 2021 |
| Doleman Construction Ltd | Construction | 2026 |
| Dolly’S Ranch Ltd | Wholesale & retail | 2025 |
| Domestic & General GAS Plumbing Electrical Solutions Ltd | Construction | 2019 |
| Domestic Abuse Services Ltd | Health & social care | 2022 |
| Dominion Holdings Limited | Construction | 2005 |
| Doms Prestige Detailing Ltd | Administrative & support | 2025 |
| Donald Ngede Ntoko Ltd | Transport & logistics | 2024 |
| Donna's Daisy's Limited | Wholesale & retail | 2016 |
| Doon Creative Ltd | Professional & scientific | 2023 |
| Door 2 Door Couriers Ltd | Transport & logistics | 2023 |
| Door Springs Limited | Manufacturing | 1994 |
| Dora & Quang Ltd | Real estate | 2022 |
| Dorjon Limited | Construction | 2014 |
| Dorlion Group Ltd | Wholesale & retail | 2026 |
| Dorman Construction Ltd | Construction | 2012 |
| Dorzel Research CIC | Professional & scientific | 2025 |
| DOT One Professional Services Limited | Professional & scientific | 2010 |
| Dottie-Designz Ltd | Wholesale & retail | 2026 |
| Double Eight Properties Limited | Real estate | 2023 |
| Double Pablo Limited | Transport & logistics | 2013 |
| Double T Properties Ltd | Real estate | 2022 |
| Dove-Eagle Support Services Ltd | Administrative & support | 2021 |
| Dowmel Smart Properties Limited | Real estate | 2018 |
| Downings Sprinkler Installations Limited | Other services | 2025 |
| DPJ Holdings 1972 Ltd | Financial services | 2025 |
| DPJ Optics Ltd | Wholesale & retail | 2025 |
| DPT Learning Ltd | Education | 2025 |
| DR Abbot Health Care Ltd | Public administration | 2023 |
| DR B Clinic Ltd | Health & social care | 2024 |
| DR Eamers Bars Limited | Manufacturing | 2019 |
| DR Eamers Emporium Limited | Manufacturing | 2017 |
| DR IKA Ltd | Health & social care | 2026 |
| DR Lawn Ltd | Administrative & support | 2025 |
| DR Rubbish Removals Limited | Transport & logistics | 2026 |
| Dragon Media Services Ltd | Professional & scientific | 2019 |
| Drayton Stoves Ltd | Construction | 2024 |
| DRE Services Ltd | Transport & logistics | 2018 |
| Dreaddoom Ltd | Wholesale & retail | 2019 |
| Dream Emporium Ltd | Wholesale & retail | 2026 |
| Dream Oaks Developers SMC PVT Ltd | Financial services | 2024 |
| Dream Realm Storytellers Ltd | Information & communication | 2019 |
| Dreambig Therapy & Care Ltd | Health & social care | 2020 |
| Dreamdays Bridalwear Ltd | Wholesale & retail | 2006 |
| Dreams Recruitment & Management Ltd | Administrative & support | 2018 |
| Dreamwork Properties Ltd | Real estate | 2023 |
| Dreczko Engineering Limited | Professional & scientific | 2025 |
| Drew BOB Limited | Professional & scientific | 2021 |
| Dringi Limited | Manufacturing | 2015 |
| Dringie Limited | Real estate | 2021 |
| Drive Management Services Limited | Extraterritorial | 2007 |
| Drivealong Car Sales Limited | Wholesale & retail | 2016 |
| Driver Hire Solutions Limited | Other services | 2018 |
| Driver Medics Products Ltd | Wholesale & retail | 2021 |
| DRM Service Station Limited | Wholesale & retail | 2018 |
| Drointon Contractors Ltd | Construction | 2026 |
| Drointon Holdings Group Ltd | Financial services | 2026 |
| Dromafield Engineering Limited | Professional & scientific | 2008 |
| DRS Recovery Services Ltd | Water & waste | 2026 |
| Drth Enterprises Limited | Administrative & support | 2005 |
| Drum Culture Ltd | Arts & recreation | 2026 |
| Drumcondra Trading Limited | Wholesale & retail | 2019 |
| DRY Base Systems Ltd | Construction | 2018 |
| Dryfix Systems Ltd | Construction | 2025 |
| DSA Drinks Ltd | Wholesale & retail | 2018 |
| Dsag Limited | Transport & logistics | 2020 |
| DSB Carpentry & Joinery Limited | Manufacturing | 2018 |
| DSB Holdings & Investments Ltd | Financial services | 2026 |
| DSL Group Couriers Limited | Transport & logistics | 2019 |
| DST Management Ltd | Professional & scientific | 2018 |
| Dualec Ltd | Other services | 2017 |
| Duck Feather Ltd | Wholesale & retail | 2022 |
| Duck Feather Sofa Ltd | Wholesale & retail | 2022 |
| Ductwork Supplies Midlands Ltd | Manufacturing | 2011 |
| Dudley (Queens Cross) Christadelphian Ecclesia Limited | Other services | 2012 |
| Dudley Academies Trust | Education | 2017 |
| Dudley Advocacy Limited | Administrative & support | 2005 |
| Dudley and Sandwell Primary Ltd | Administrative & support | 2026 |
| Dudley and West Midlands Zoological Society Limited | Arts & recreation | 1978 |
| Dudley Automotive Limited | Transport & logistics | 2025 |
| Dudley Butchers Limited | Wholesale & retail | 2025 |
| Dudley Cabs Ltd | Transport & logistics | 2024 |
| Dudley Canal and Tunnel Trust | Arts & recreation | 2015 |
| Dudley Canal and Tunnel Trust Enterprises Limited | Real estate | 2016 |
| Dudley Canal Trust (Trips) Limited | Transport & logistics | 1983 |
| Dudley Car Bodyshop Ltd | Wholesale & retail | 2023 |
| Dudley Carpets Limited | Wholesale & retail | 2026 |
| Dudley Cars Limited | Transport & logistics | 2023 |
| Dudley Central Laundry Limited | Other services | 2026 |
| Dudley Clinical Services Limited | Health & social care | 2012 |
| Dudley Court Management Co. Limited | Real estate | 1990 |
| Dudley Cuisine Limited | Hospitality | 2020 |
| Dudley Drinks Stop Limited | Wholesale & retail | 2024 |
| Dudley Education Services Ltd | Education | 2024 |
| Dudley Electrical & Plumbing Services Limited | Manufacturing | 1980 |
| Dudley Electroplating Ltd | Manufacturing | 2017 |
| Dudley Engines Ltd | Wholesale & retail | 2015 |
| Dudley Family Investments Limited | Financial services | 2023 |