| Domms Limited | Construction | 2023 |
| Domoy Andra Barnes Ltd | Transport & logistics | 2018 |
| Domus Nova Properties Limited | Construction | 2020 |
| Donals Chicken Ltd | Hospitality | 2015 |
| Doner & Gyros UK Limited | Wholesale & retail | 2020 |
| Dongfangjinhong Ltd | Construction | 2026 |
| Donker Limited | Hospitality | 2024 |
| Dorchester & Westbury Mansions RTM Company Ltd | Households | 2022 |
| Dordale (Joinery) Limited | | 1984 |
| Dore and Augusto Limited | Real estate | 2013 |
| Dorfer Limited | Administrative & support | 2018 |
| Doric House Management Company Limited | Households | 2011 |
| Doris.Carew Ltd | Wholesale & retail | 2026 |
| Dormers Lodge Limited | Households | 2005 |
| Dormoa Ltd | Administrative & support | 2019 |
| Dorndon House Freehold Company Limited | Households | 2021 |
| Dorndon House RTM Company Limited | Households | 2012 |
| Dorrington Creative Limited | Hospitality | 2013 |
| Dorsey Wood Processing Limited | | 1988 |
| Doshi (London) Limited | Professional & scientific | 2004 |
| Doshi Accountants Limited | Professional & scientific | 2010 |
| Doshi Advisory Services Ltd | Professional & scientific | 2024 |
| Doshi Optics Limited | Wholesale & retail | 2015 |
| Doshi Recruitment Limited | Administrative & support | 2017 |
| Dosonec Recruitment Limited | Administrative & support | 2022 |
| DOT Web Ltd | Information & communication | 2022 |
| Dothestuff Ltd | Administrative & support | 2024 |
| Dotnet Experts Limited | Information & communication | 2012 |
| Dotty's Teahouse Limited | Hospitality | 2016 |
| Double EYE Security Services Ltd | Administrative & support | 2016 |
| Double N Q Limited | Real estate | 2012 |
| Douglas Walker Limited | Other services | 2012 |
| Doulton Grange Management Company Limited | Households | 2005 |
| Douma Limited | Real estate | 2002 |
| Dove (Traffic) Services Limited | Extraterritorial | 2006 |
| Dovebiz Ltd | Administrative & support | 2007 |
| Dovecote Court Management (Folksworth) Limited | Households | 1977 |
| Dover Mansions Limited | Households | 2003 |
| Dovestar Services Limited | Real estate | 1992 |
| Dovey and Sons Limited | Real estate | 2010 |
| Down Hall Care Limited | Health & social care | 2018 |
| Downland Park Limited | Hospitality | 2019 |
| Downsview Ltd | Real estate | 2025 |
| Doxa Group of Companies Ltd | Transport & logistics | 2024 |
| Doxa Initiatives CIC | Education | 2024 |
| Dozieagu Limited | Transport & logistics | 2023 |
| DP Assets Limited | Real estate | 2019 |
| DP Kebabs Ltd | Hospitality | 2018 |
| DP Luton Ltd | Wholesale & retail | 2011 |
| DPC Housing Investment Ltd | Real estate | 2014 |
| Dpcroydon Ltd | Hospitality | 2026 |
| Dpenchev Ltd | Transport & logistics | 2023 |
| Dprovider Limited | Construction | 2018 |
| DPS London Ltd | Real estate | 2023 |
| DR Anil Kumar Consultancy Ltd | Health & social care | 2024 |
| DR Arran KAI Psychology Services Limited | Education | 2025 |
| DR Cell Limited | Wholesale & retail | 2020 |
| DR James Watson Ltd | Health & social care | 2026 |
| DR Progressive Building Ltd | Construction | 2019 |
| DR Pure and Organics Limited | Manufacturing | 2024 |
| DR RNA Ltd. | Real estate | 2019 |
| DR W. Wilson Ltd | Health & social care | 2015 |
| Dr&Ap Limited | Real estate | 2026 |
| DR. Mousa Abdulahad Limited | Health & social care | 2021 |
| DR. Paul Brice Limited | Professional & scientific | 2013 |
| Draft 1 Limited | Information & communication | 2010 |
| Draft and Finalise Limited | Professional & scientific | 2017 |
| Draftfind Limited | Households | 1995 |
| Dragged Around London Ltd | Administrative & support | 2017 |
| Dragon Property Management Limited | Households | 1994 |
| Drain Surgeon Services Limited | Manufacturing | 1999 |
| Drains Ahead Limited | Water & waste | 2006 |
| Drakes Associates Limited | Professional & scientific | 2014 |
| Draymans Place Management Limited | Households | 2001 |
| Drayton Properties Limited | Real estate | 2000 |
| DRB Flooring Specialists Ltd. | Wholesale & retail | 2022 |
| Drbak Limousine UK Limited | Wholesale & retail | 2019 |
| DRE SON Limited | Professional & scientific | 2024 |
| Dream 4 House Ltd | Construction | 2021 |
| Dream a Dream Global Limited | Wholesale & retail | 2025 |
| Dream Bar Hire Ltd | Hospitality | 2024 |
| Dream Big Independent Living Ltd | Health & social care | 2020 |
| Dream Build Homz Ltd | Construction | 2025 |
| Dream Deals Ltd | Wholesale & retail | 2023 |
| Dream Light K.D.G Electrical Ltd | Construction | 2020 |
| Dream Luxury Events Ltd | Hospitality | 2020 |
| Dream Property Experts Limited | Real estate | 2014 |
| Dream Sisters Ltd | Real estate | 2019 |
| Dreamfarm in the UK Ltd | Wholesale & retail | 2024 |
| Dreaming Millions Clothing Limited | Manufacturing | 2018 |
| Dreaming Millions Real Estate Ltd | Real estate | 2023 |
| Dreamline Estates Ltd | Real estate | 2018 |
| Dreamlodge Limited | Agriculture & fishing | 1984 |
| Dreamnest Properties Limited | Real estate | 2024 |
| Dreams of Sicily Ltd | Hospitality | 2021 |
| Dreams Transportation Limited | Transport & logistics | 2021 |
| Dreckette Rail Solutions Ltd | Administrative & support | 2015 |
| Dresscircle Ltd | Health & social care | 2022 |
| Drew West Limited | Transport & logistics | 2023 |
| DRG Consultants Ltd | Health & social care | 2016 |