| Dashroute Logistics Ltd | Transport & logistics | 2026 |
| Dashteq Ltd | Administrative & support | 2016 |
| Dasit Technologies Ltd | Information & communication | 2025 |
| Dass Corporation Limited | Other services | 2017 |
| Dassaur Management Limited | Professional & scientific | 2015 |
| Dastan Gardens Management Company Limited | Households | 2021 |
| Dastar Investments Ltd | Real estate | 2024 |
| Dastar Ltd. | Manufacturing | 2020 |
| Dastardly and Muttley Limited | Real estate | 2022 |
| Dasu Properties Limited | Real estate | 2024 |
| Data Acuity Ltd | Information & communication | 2011 |
| Data Analysing & Marketing Ltd. | Information & communication | 2014 |
| Data Analytics Ltd | Information & communication | 2025 |
| Data and Cloud Ltd | Information & communication | 2025 |
| Data and Logic Limited | Professional & scientific | 2016 |
| Data Base Development Ltd | Information & communication | 2023 |
| Data Centre Engineering Services Ltd | Information & communication | 2020 |
| Data Collective Limited | Education | 2018 |
| Data DEN Limited | Professional & scientific | 2026 |
| Data Driven Analytics Ltd | Professional & scientific | 2016 |
| Data Driven Telematics Ltd | Extraterritorial | 2006 |
| Data Dune Ltd | Information & communication | 2022 |
| Data Edge Solutions Ltd | Information & communication | 2024 |
| Data Investments Limited | Real estate | 2014 |
| Data Mindful Ltd. | Information & communication | 2017 |
| Data Probe Analytics Ltd | Education | 2025 |
| Data Vision Tech Solutions PVT Limited | Water & waste | 2025 |
| Data X Labs Ltd | Information & communication | 2026 |
| Dataactions Limited | Information & communication | 2024 |
| Database First AID Limited | Professional & scientific | 2015 |
| Datablob Ltd | Information & communication | 2025 |
| Databloom X Ltd | Information & communication | 2025 |
| Databox Limited | Professional & scientific | 2015 |
| Datacat Network Cabling Ltd | Administrative & support | 2021 |
| Datacore Ltd | Information & communication | 2025 |
| Datafuse Analytics Ltd | Information & communication | 2025 |
| Datagather Ltd | Information & communication | 2025 |
| Datagen Enterprise Ltd | Professional & scientific | 2015 |
| Datagrid Analytics Ltd | Information & communication | 2025 |
| Datamates Ltd | Information & communication | 2013 |
| Dataqube Global Ltd | Information & communication | 2019 |
| Datascope Limited | Information & communication | 2015 |
| Datasyniq Solutions Ltd | Wholesale & retail | 2025 |
| Datatech UK Ltd | Information & communication | 2006 |
| Datatecnics AST Limited | Professional & scientific | 2014 |
| Datatecnics Aviation & Defence Technologies Limited | Professional & scientific | 2014 |
| Datatecnics Cyber Defence Technologies Limited | Information & communication | 2014 |
| Datatecnics Environmental Technologies Limited | Professional & scientific | 2014 |
| Datatrust Solutions Ltd | Health & social care | 2026 |
| Datavantage Limited | Professional & scientific | 2022 |
| Dataves Medics Ltd | Health & social care | 2023 |
| Datawise Analytics Limited | Information & communication | 2024 |
| Datchina Limited | Extraterritorial | 2001 |
| Datchina Murthi & Sons (Commercial) Limited | Extraterritorial | 1999 |
| Datchina Murthi & Sons Investments Limited | Extraterritorial | 2014 |
| Datemaite Ltd | Information & communication | 2025 |
| Datium Limited | Professional & scientific | 2023 |
| Dats TV Ltd | Administrative & support | 2018 |
| Datum Consulting Ltd | Professional & scientific | 2022 |
| Datum LAB Ltd | Information & communication | 2026 |
| DATUM360 Holdco Limited | Financial services | 2020 |
| Datus Enabling Recovery | Health & social care | 2008 |
| DAU Care Ltd | Health & social care | 2019 |
| DAU Investments Ltd | Real estate | 2019 |
| DAU Properties Ltd | Real estate | 2015 |
| Daud Enterprises Ltd | Hospitality | 2025 |
| Daughters and Kelly Real Estate Ltd | Real estate | 2025 |
| Daughters of Kashmir Ltd | Health & social care | 2020 |
| DAV Services Ltd | Transport & logistics | 2025 |
| Davad Holdings Ltd | Financial services | 2022 |
| Davalow Dorlec Systems Limited | Manufacturing | 2003 |
| Davalow Holdings Limited | Extraterritorial | 2004 |
| Davalow Limited | Other services | 1990 |
| Davan Properties Limited | Real estate | 2019 |
| Davdon Global Logistics Ltd | Transport & logistics | 2025 |
| Dave Beards Limited | Wholesale & retail | 1995 |
| Dave Booth Maintenance Services Ltd | Manufacturing | 2022 |
| Dave Community Well-Being Community Interest Company | Arts & recreation | 2023 |
| Dave Flora Limited | Wholesale & retail | 2013 |
| Dave Hardy Consulting Ltd | Professional & scientific | 2025 |
| Dave Malia Sport and Events Ltd | Professional & scientific | 2024 |
| Dave Portas CCM Ltd | Professional & scientific | 2015 |
| Dave Watson Fitted Bedrooms Limited | Manufacturing | 2020 |
| Dave Well-Being Limited | Health & social care | 2020 |
| Dave's Coaches Ltd | Transport & logistics | 2017 |
| Dave's Dubbing Limited | Information & communication | 2015 |
| Davej Limited | Health & social care | 2017 |
| Davenports Academy Limited | Professional & scientific | 2010 |
| Davenports Brewery (Holdings) Limited | Professional & scientific | 2015 |
| Davenports PUB Company Limited | Hospitality | 2007 |
| Daventry & District Housing Limited | Extraterritorial | 2011 |
| Davey Supported Homes Ltd | Real estate | 2025 |
| Davey UK Holdings Ltd | Real estate | 2025 |
| Davflorin Ltd | Transport & logistics | 2025 |
| David & ELI Minimarket Limited | Wholesale & retail | 2017 |
| David Blower Photography Ltd. | Professional & scientific | 2017 |
| David Broome Limited | Construction | 2008 |
| David Burke Limited | Manufacturing | 2018 |
| David Carl Interiors Limited | Construction | 2016 |
| David Cleveland Ltd | Other services | 2015 |