| Daswani & Company Limited | Information & communication | 2010 |
| Data Management Consultancy Limited | Information & communication | 2018 |
| Data Techniq Ltd | Information & communication | 2019 |
| Databag Ltd | Information & communication | 2025 |
| Daton Ltd | Wholesale & retail | 2026 |
| Davall Gears Ltd | Manufacturing | 2007 |
| Dave George Design Ltd | Professional & scientific | 2012 |
| Dave Sea Limited | Information & communication | 2016 |
| Dave's Renovators Ltd | Manufacturing | 2025 |
| Davgreat Limited | Households | 1980 |
| David Lloyd Clubs Holdings Limited | Arts & recreation | 2017 |
| David Lloyd Clubs Limited | Arts & recreation | 2017 |
| David Lloyd Leisure Development Sites Limited | Construction | 2008 |
| David Lloyd Leisure Farnham Limited | Arts & recreation | 2010 |
| David Lloyd Leisure GR Limited | Other services | 2015 |
| David Lloyd Leisure Group Limited | Professional & scientific | 2007 |
| David Lloyd Leisure JV Holdings Limited | Professional & scientific | 2008 |
| David Lloyd Leisure Limited | Arts & recreation | 1980 |
| David Lloyd Leisure Nominee NO.1 Limited | Professional & scientific | 2008 |
| David Lloyd Leisure Nominee NO.2 Limited | Professional & scientific | 2008 |
| David Lloyd Leisure Nominee NO.3 Limited | Professional & scientific | 2006 |
| David Lloyd Leisure Nominee NO.4 Limited | Professional & scientific | 2006 |
| David Lloyd Leisure Nurseries Limited | Professional & scientific | 1998 |
| David Lloyd Leisure Operations Holdings Limited | Professional & scientific | 2008 |
| David Lloyd Leisure Properties NO.1 Limited | Real estate | 2007 |
| David Lloyd Leisure Properties NO.2 Limited | Real estate | 2008 |
| David Lloyd Leisure Properties NO.3 Limited | Real estate | 2008 |
| David Lloyd Leisure Properties NO.4 Limited | Real estate | 2008 |
| David Lloyd Sports Centres Limited | Professional & scientific | 1982 |
| David M. Rees & Associates Limited | Professional & scientific | 1979 |
| Davie Campbell Construction Limited | Construction | 2013 |
| Davola Limited | Real estate | 2002 |
| Dawin Ltd | Information & communication | 2023 |
| Dawson Residential LLP | | 2023 |
| DAZ Services Ltd | Transport & logistics | 2014 |
| DB College Ltd | Education | 2015 |
| DB Drone Services Ltd | Information & communication | 2018 |
| DB Hertford Limited | Administrative & support | 2014 |
| DB Maxim Ltd | Administrative & support | 2023 |
| DB Residence Ltd | Real estate | 2025 |
| DB Training Ltd | Wholesale & retail | 2020 |
| Dbass Solutions Ltd | Administrative & support | 2024 |
| DBP Property Services Limited | Real estate | 2022 |
| DC Diamond Cleaning Ltd | Administrative & support | 2024 |
| DCC Superstore Ltd | Wholesale & retail | 2023 |
| DCD Fire Limited | Construction | 2021 |
| DCH Renovation Ltd | Construction | 2024 |
| Dcre Services Limited | Real estate | 2021 |
| Dcrl Property Ltd | Real estate | 2025 |
| DDX Limited | Transport & logistics | 2025 |
| DE Jager-Smith UK Holdings Limited | Financial services | 2024 |
| DE Luca Holdings Ltd | Construction | 2025 |
| Debly Technologies Ltd | Information & communication | 2025 |
| Deedionne Health Limited | Health & social care | 2026 |
| Deedionnecare Ltd | Public administration | 2024 |
| Deekee Care Limited | Health & social care | 2022 |
| Deepcare Carpet Cleaning Ltd | Administrative & support | 2025 |
| Delian Trans Ltd | Transport & logistics | 2016 |
| Dellsome Lane Management Company Limited | Households | 1983 |
| Delta Contractor Solutions Limited | Professional & scientific | 2017 |
| Delta Electricals & Audio Services Ltd. | Manufacturing | 2017 |
| Demario Construction Company Limited | Construction | 2025 |
| Demetriou Futures Trading Limited | Financial services | 2020 |
| Demetriou Group Limited | Other services | 2020 |
| Dergley Ltd | Health & social care | 2024 |
| Derivista Group Holdings Limited | Wholesale & retail | 2021 |
| Design Collective Limited | Professional & scientific | 1994 |
| Design-Invest Ltd | Wholesale & retail | 2019 |
| DESIGNS4GARDENS Limited | Arts & recreation | 2018 |
| Deuce Acquisitions Limited | Professional & scientific | 2013 |
| Deuce Finco PLC | Financial services | 2021 |
| Deuce Holdco Limited | Professional & scientific | 2013 |
| Deuce Midco Limited | Financial services | 2018 |
| Deuce Parentco Limited | Financial services | 2021 |
| Deuce Topco Limited | Financial services | 2018 |
| Devansh Residency Limited | Real estate | 2019 |
| Devmine Tech Ltd | Information & communication | 2025 |
| Devnique Ltd | Wholesale & retail | 2025 |
| Devonia Limited | Information & communication | 2023 |
| Devsec Limited | Information & communication | 2024 |
| DG Contract Limited | Construction | 2019 |
| Dhruvik Ltd | Real estate | 2022 |
| Dialon Cafe Limited | Hospitality | 2024 |
| Diamond CUT Productions Limited | Information & communication | 2016 |
| Diamond Shine QP Ltd | Administrative & support | 2016 |
| Diar Complete Construction Ltd | Construction | 2024 |
| Dibble Digital Ltd | Information & communication | 2019 |
| Dickins Court Residents Management Limited | Households | 1988 |
| Dida Decorators Limited | Construction | 2020 |
| Digi Technology Limited | Information & communication | 2018 |
| Digica (FMS) Limited | Extraterritorial | 1989 |
| Digica Group Finance Limited | Professional & scientific | 2002 |
| Digica Group Holdings Limited | Extraterritorial | 2002 |
| Digica Group Limited | Extraterritorial | 2004 |
| Digica Limited | Extraterritorial | 1981 |
| Digica SMP Limited | Extraterritorial | 1994 |
| Digideclare UK Ltd | Transport & logistics | 2025 |
| Digihaul Limited | Transport & logistics | 2020 |
| Digimaverix Ltd | Information & communication | 2024 |
| Digipro Marketing Limited | Professional & scientific | 2025 |