| Datapage Consultancy Ltd | Information & communication | 2013 |
| Datasherpas Limited | Information & communication | 2023 |
| Datta Limited | Administrative & support | 2017 |
| Dattani DOT COM Limited | Information & communication | 2018 |
| Davenport Estates LLP | | 2017 |
| Daventer Properties Limited | Real estate | 2020 |
| David Arch Limited | Arts & recreation | 1992 |
| David Brandon Limited | Administrative & support | 2014 |
| David Hobdell Building (London) Limited | Financial services | 2002 |
| David Home Facilities Limited | Construction | 2018 |
| David Money Design Limited | Professional & scientific | 2005 |
| David Morley Ltd | Information & communication | 2011 |
| David Team Limited | Construction | 2025 |
| Davidson Frost-Wellings Ltd | Real estate | 2021 |
| Davrik Limited | Real estate | 2026 |
| Davy & Associates Limited | Professional & scientific | 2012 |
| Dawn Flower (UK) Limited | Wholesale & retail | 2014 |
| Dawnplus Limited | Construction | 1986 |
| Daytona Entertainment Limited | Arts & recreation | 2018 |
| Daza Limited | Information & communication | 2022 |
| DB Radiology Services Ltd | Health & social care | 2021 |
| Db&Cd Services Limited | Construction | 2022 |
| DBINVESTMENTS1 Ltd | Financial services | 2026 |
| DBS & Sons Limited | Construction | 2016 |
| DCG Parcel Ltd. | Transport & logistics | 2016 |
| DCR Projects Limited | Professional & scientific | 2013 |
| DCS Construct Limited | Construction | 2025 |
| Dcsm Consultants Ltd | Professional & scientific | 2016 |
| DE Beauvoir Property Co.Limited | Real estate | 1956 |
| DE Leon Ltd | Information & communication | 2023 |
| DEA SA Limited | Real estate | 2019 |
| Deacons Heights Residents Association (1-8) Ltd | Professional & scientific | 2000 |
| Dean Craig Productions Limited | Arts & recreation | 2009 |
| Dean O'Shea Consulting Ltd | Other services | 2018 |
| Debruin Court RTM Company Limited | Extraterritorial | 2015 |
| Deck Hire Ltd | Administrative & support | 2008 |
| Decor Elite Ltd | Construction | 2022 |
| Decorating and Painting Ltd | Construction | 2026 |
| Decorum Investments Limited | Real estate | 2016 |
| DEE Scenic Ltd | Construction | 2013 |
| Deekay Holdings (UK) Limited | Real estate | 2005 |
| Deekay Investments Limited | Professional & scientific | 1972 |
| Deekay Management LLP | | 2009 |
| Deekay Property Limited | Real estate | 1987 |
| Deenas Distribution Limited | Wholesale & retail | 2024 |
| Deep & Deep Limited | Real estate | 2024 |
| Deepropertiesuk Ltd | Real estate | 2021 |
| Deeps Builders Limited | Construction | 2019 |
| Deerlodge Limited | Real estate | 1989 |
| DEI Duchi Limited | Wholesale & retail | 2022 |
| Dekora Ltd | Construction | 2023 |
| Deliciile Alinei Ltd | Manufacturing | 2025 |
| Dellex Consultancy Limited | Professional & scientific | 2018 |
| Delphi Media Consultants Ltd | Professional & scientific | 2020 |
| Delsa (UK) Limited | Other services | 2011 |
| Deluxe Soft Toys London Limited | Extraterritorial | 2016 |
| Demoor Limited | Professional & scientific | 2016 |
| Dene Court Extension Residents Association Limited | Households | 1960 |
| Deni Cleaning Services Limited | Administrative & support | 2019 |
| Dennis Lane Residents Association Limited | Hospitality | 1980 |
| Denren Ltd | Construction | 2025 |
| Dent Club Ltd | Wholesale & retail | 2023 |
| Denver Court RTM Company Limited | Households | 2023 |
| DEP Worldwide Limited | Professional & scientific | 2014 |
| Depta Properties Ltd | Real estate | 2020 |
| Derby Grammar School Limited | Education | 2024 |
| Dere Interiors Ltd | Construction | 2025 |
| Deronpride Limited | Real estate | 1983 |
| Derwent Property Investments Limited | Real estate | 2023 |
| Desai Accountancy Services Limited | Professional & scientific | 2014 |
| Descartes Properties Limited | Real estate | 1997 |
| Desen Auto Services Ltd | Wholesale & retail | 2024 |
| Desi Production UK Ltd | Administrative & support | 2022 |
| Design & Build Specialist Group Ltd | Construction | 2025 |
| Design and Grow Ltd | Agriculture & fishing | 2024 |
| Design LAB Works Limited | Financial services | 2024 |
| Design Line Construction Limited | Construction | 2024 |
| Design Projects Limited | Manufacturing | 1982 |
| Design Turner Limited | Construction | 2005 |
| Design Wave Ltd | Professional & scientific | 2024 |
| Design Your Holiday Ltd | Administrative & support | 2020 |
| Designpoint Limited | Professional & scientific | 2014 |
| Designprime Limited | Wholesale & retail | 1997 |
| Destiny Express Limited | Wholesale & retail | 2008 |
| Destroy Demolition Limited | Construction | 2012 |
| DEV International (UK) Limited | Wholesale & retail | 2013 |
| Develop Your Home Limited | Construction | 2023 |
| Development Forge Limited | Other services | 2021 |
| Developments by DP Limited | Construction | 2023 |
| Devi Narthanaalaya School of Dance Ltd | Education | 2020 |
| Devil's Pupil Ltd | Information & communication | 2022 |
| DEX Interiors Limited | Construction | 2025 |
| Dgsl Construction Ltd | Construction | 2025 |
| Dhamecha Group Limited | Administrative & support | 2021 |
| Dhamecha Holdings Limited | Information & communication | 2008 |
| Dharam Ltd | Information & communication | 2015 |
| Dharam Property Ltd | Real estate | 2024 |
| Dharmabhakti Limited | Real estate | 2020 |
| Dheera Limited | Real estate | 2016 |
| Dhol & Dreamz Ltd | Other services | 2025 |