| Dignity Funerals NO.2 Limited | Extraterritorial | 2011 |
| Dignity Funerals NO.3 Limited | Other services | 2014 |
| Dignity Funerals NO.4 Limited | Other services | 2015 |
| Dignity Group Holdings Limited | Professional & scientific | 2002 |
| Dignity Holdings NO.2 Limited | Professional & scientific | 2002 |
| Dignity Holdings Limited | Professional & scientific | 2002 |
| Dignity Holdings NO.3 Limited | Professional & scientific | 2014 |
| Dignity in Destiny Limited | Extraterritorial | 1993 |
| Dignity Manufacturing Limited | Extraterritorial | 1983 |
| Dignity Mezzco Limited | Financial services | 2002 |
| Dignity PRE Arrangement Limited | Other services | 1984 |
| Dignity Securities Limited | Other services | 1941 |
| Dignity Services | Professional & scientific | 1994 |
| Dignity Ventures Limited | Professional & scientific | 2011 |
| Dikruv Limited | Financial services | 2021 |
| Dillistone Funeral Service Limited | Extraterritorial | 1974 |
| Dilwyn Film Limited | Administrative & support | 2020 |
| Dimark Cleaning Limited | Other services | 2012 |
| Dimension Painting and Decorating Limited | Construction | 2003 |
| Dining Dreams Limited | Hospitality | 2023 |
| Dinusenu Limited | Health & social care | 2025 |
| Direct Art Action (UK) Limited | Real estate | 2019 |
| Direct Cutting Limited | Manufacturing | 2025 |
| Direct Research Company Ltd | Professional & scientific | 2013 |
| Direct Tube Automation Limited | Administrative & support | 2000 |
| Disc Day Nurseries Limited | Education | 2011 |
| Discely Limited | Education | 2026 |
| Discovery Investment Management Limited | Construction | 2021 |
| Disney Limited | Professional & scientific | 2000 |
| Diverse Coatings Solutions Ltd | Professional & scientific | 2025 |
| Diversity Chiropractic Ltd | Health & social care | 2016 |
| Diversity Construction Group Ltd | Professional & scientific | 2016 |
| Divine Engineering Limited | Information & communication | 2017 |
| Divine S.C. Limited | Administrative & support | 2025 |
| Divine Shield Limited | Administrative & support | 2024 |
| Divinience Properties Ltd | Real estate | 2019 |
| DJ Collectibles Sutton Coldfield Ltd | Wholesale & retail | 2022 |
| DJ Leisure Holdings Limited | Hospitality | 2026 |
| DJB Accountants Ltd | Professional & scientific | 2003 |
| DJB Operations Ltd | Information & communication | 2025 |
| DJB Physiotherapy Ltd | Public administration | 2024 |
| DJH Trade Limited | Wholesale & retail | 2012 |
| DJS Executive Search Limited | Administrative & support | 2003 |
| Djworx Limited | Information & communication | 2024 |
| DK & JK Properties Ltd | Real estate | 2016 |
| DKI Properties Limited | Real estate | 2023 |
| DKN Business Solutions Limited | Real estate | 2022 |
| Dkng Limited | Construction | 2012 |
| DL Birmingham Ltd | Arts & recreation | 2026 |
| DLR Construction Services Ltd | Construction | 2017 |
| DLR Homes Limited | Real estate | 2019 |
| DLS Send Support Solutions Ltd | Education | 2022 |
| Dlsuk Limited | Extraterritorial | 1996 |
| DM Convenince Store Ltd | Wholesale & retail | 2024 |
| DM Family Health Ltd | Health & social care | 2025 |
| DMB Investment Property Ltd | Real estate | 2024 |
| DMD (Sutton Coldfield) Ltd | Health & social care | 2018 |
| DME Construction Limited | Administrative & support | 2009 |
| DMF Projects Limited | Construction | 2010 |
| DML Hemming Limited | Administrative & support | 2016 |
| DNA Financial Planning Limited | Financial services | 2015 |
| DNM Property Solutions Ltd | Real estate | 2015 |
| Docklands Funeral Services Limited | Extraterritorial | 1995 |
| Dockport Limited | Real estate | 2021 |
| Doctor RC Professional Limited | Health & social care | 2019 |
| Doctorsmadesimple Ltd | Professional & scientific | 2022 |
| Dog & Doublet Events Ltd | Hospitality | 2020 |
| Dogs Behaving Gladly Limited | Education | 2022 |
| Dolly Rascal Limited | Wholesale & retail | 2023 |
| Dolphin Swimware Limited | Wholesale & retail | 2014 |
| Domain Accountancy Limited | Professional & scientific | 2024 |
| Domas Leaflet Ltd | Transport & logistics | 2013 |
| Domestic Cleaning Alliance Ltd | Other services | 2014 |
| Domestique Franchising Ltd | Administrative & support | 2010 |
| Domikon Housing Ltd | Real estate | 2025 |
| DON Steel Limited | Wholesale & retail | 2022 |
| Done Well Builders Ltd | Construction | 2014 |
| Doniex Ltd | Transport & logistics | 2016 |
| Doorguard Ltd | Wholesale & retail | 2021 |
| Doors on Demand Ltd | Construction | 2018 |
| Dorling Transport Ltd | Transport & logistics | 2019 |
| Dorn Solutions Ltd | Professional & scientific | 2010 |
| Doronwell Limited | Wholesale & retail | 2000 |
| DOT DOT DOT Wellbeing CIC | Health & social care | 2026 |
| Dottridge Brothers Limited | Extraterritorial | 1982 |
| Double J Properties (Leisure) Ltd | Real estate | 2023 |
| Double J Properties (Residential) Ltd | Real estate | 2025 |
| Double J Properties Limited | Real estate | 2002 |
| Double TV Limited | Information & communication | 2026 |
| Doug Middleton Consulting Limited | Professional & scientific | 2019 |
| Dovetail Build Limited | Construction | 2022 |
| Doveteam Limited | Real estate | 1995 |
| Dowa Limited | Professional & scientific | 2016 |
| Dowa NE Ltd | Professional & scientific | 2023 |
| Dowa Vision Ltd | Professional & scientific | 2023 |
| Dower Road Property Limited | Real estate | 2024 |
| Downer & White Limited | Extraterritorial | 1959 |
| Downes Property Limited | Real estate | 1957 |
| Downing Consult Ltd | Professional & scientific | 2025 |
| Downs Crematorium Limited | Extraterritorial | 1885 |