| DESIGNED4PRINT Ltd | Manufacturing | 2023 |
| Designer Homeware Ltd | Wholesale & retail | 2015 |
| Designerpixels Ltd | Professional & scientific | 2019 |
| Desmo (UK) Ltd | Professional & scientific | 2000 |
| Desmo Experience UK Limited | Other services | 2016 |
| Destiny Nursing & Care Agency Ltd | Health & social care | 2008 |
| DEV & Group Limited | Real estate | 2021 |
| Dev's Properties Ltd | Real estate | 2024 |
| Development Capital Ltd | Professional & scientific | 2009 |
| Devi and SON Ltd | Hospitality | 2024 |
| Devisio Pictures Ltd | Information & communication | 2021 |
| Devon Property Rentals Ltd | Hospitality | 2019 |
| Devonport Capital Limited | Financial services | 2015 |
| Devonshire House Management Company (RTM) Limited | Professional & scientific | 2004 |
| Dexes Bespoke Limited | Manufacturing | 2019 |
| Dexter Global Business Solutions Ltd. | Professional & scientific | 2016 |
| Dezilo Holdings Ltd | Health & social care | 2016 |
| DFC Aesthetics Limited | Health & social care | 2012 |
| DFY (Marham) Ltd | Health & social care | 2020 |
| DFY Limited | Health & social care | 2015 |
| DG Electrix Limited | Construction | 2024 |
| DG FAS 1 Holdco Limited | Real estate | 2022 |
| DG FAS 2 Holdco Limited | Real estate | 2024 |
| DG FCP Limited | Financial services | 2024 |
| DG Manco Limited | Financial services | 2025 |
| DG Media Studio Ltd | Information & communication | 2015 |
| DG Mipco Limited | Financial services | 2025 |
| DGH Realty Group Limited | Education | 2014 |
| Dglm Holdings Ltd | Financial services | 2026 |
| DGS Holdings Limited | Financial services | 2019 |
| DGS Investments Limited | Real estate | 2019 |
| DGS Props Ltd | Arts & recreation | 2018 |
| DGT Solutions Ltd | Administrative & support | 2023 |
| DH International Limited | Real estate | 2019 |
| DHABA7 Limited | Hospitality | 2020 |
| DHB Holdings Limited | Financial services | 2016 |
| DHB Utilities Limited | Construction | 2013 |
| Dhpr SPV Limited | Arts & recreation | 2022 |
| DI Bernardi Ltd | Health & social care | 2011 |
| Diabagate Properties Plans Ltd | Real estate | 2019 |
| Dial a Claim Limited | Professional & scientific | 2023 |
| Dial Care Services Ltd | Transport & logistics | 2024 |
| Dial-A-Puff Ltd | Wholesale & retail | 2025 |
| Diamant Building Services Ltd. | Construction | 2013 |
| Diamond Electrical Solutions Ltd | Construction | 2010 |
| Diamond Lashes London Ltd | Wholesale & retail | 2023 |
| Diamond Mars Limited | Wholesale & retail | 2016 |
| Diamond Repair Solutions Ltd | Wholesale & retail | 2025 |
| Diamond Surveying Solutions Limited | Construction | 2018 |
| DIB Civil Engineering Ltd | Construction | 2026 |
| Dickyb Electrical Limited | Construction | 2018 |
| Dictatenow Limited | Professional & scientific | 2003 |
| Digable Couriers LLP | | 2016 |
| Digi NOV Ltd | Administrative & support | 2021 |
| Digiplus Cyber CIC | Other services | 2024 |
| Digital Atelier Limited | Information & communication | 1998 |
| Digital GP Ltd | Health & social care | 2016 |
| Digital Package Ltd | Professional & scientific | 2026 |
| Digital Software Solutions Ltd | Information & communication | 2015 |
| Digital Technologia Limited | Information & communication | 2022 |
| DIN Consultancy Ltd | Professional & scientific | 2021 |
| DIN Properties Investment Ltd | Real estate | 2026 |
| Dinelli Limited | Wholesale & retail | 2022 |
| Dining BUS Services Limited | Other services | 2002 |
| Diomark Care Limited | Health & social care | 1996 |
| Dionis Builders Ltd | Manufacturing | 2019 |
| Diplomatic World Projects Limited | Professional & scientific | 2023 |
| Direct 2 Global Limited | Wholesale & retail | 2017 |
| Direct Actuary Ltd | Other services | 2023 |
| Directamanagement Ltd | Professional & scientific | 2015 |
| Discovery Productions Limited | Arts & recreation | 1971 |
| District Housing Limited | Real estate | 2014 |
| Ditto Medical Limited | Information & communication | 2023 |
| Ditto-Yad Limited | Health & social care | 2010 |
| Divin Drylining Ltd | Construction | 2022 |
| Divine Rights Ltd | Arts & recreation | 2022 |
| Divine Steps Ltd | Wholesale & retail | 2025 |
| Divulge Limited | Professional & scientific | 2018 |
| Dixons Hill Road Management Company Ltd | Extraterritorial | 2014 |
| DJ Dizzy Blonde Ltd | Information & communication | 2025 |
| DJB Decorators Limited | Construction | 2021 |
| DJB Group Limited | Professional & scientific | 2026 |
| DJB Rural Limited | Financial services | 2026 |
| DJI Racing Limited | Real estate | 2019 |
| Djordje Art Ltd | Arts & recreation | 2026 |
| DJP Distribution (UK) Ltd | Wholesale & retail | 2021 |
| DJS Securities Ltd | Financial services | 2026 |
| DJV Construction Ltd | Construction | 2023 |
| DK Medicare Ltd | Health & social care | 2014 |
| DKB Productions Limited | Information & communication | 2025 |
| Dlmpp Limited | Health & social care | 2019 |
| DM Develop Ltd | Construction | 2025 |
| DM Home Designs Limited | Construction | 2023 |
| DM Home Properties Limited | Households | 2025 |
| DM Management Property UK Limited | Real estate | 2025 |
| DM Wholesale London Ltd. | Wholesale & retail | 2019 |
| DM786 Health Limited | Other services | 2012 |
| DM786 Limited | Real estate | 2002 |
| DM786 Property Investment Ltd | Real estate | 2020 |
| DMB Interiors Ltd | Construction | 2018 |