| Darlton Software Gate LP | | 2011 |
| Darmera IV LP | | 2014 |
| Darnell Group LP | | 2017 |
| Darnell Taxis Ltd. | Professional & scientific | 2000 |
| Darnrigg Ltd. | Real estate | 2000 |
| Darrachproperties Limited | Real estate | 2025 |
| Darras Ltd | Hospitality | 2019 |
| Darrell Group LP | | 2016 |
| Darroch Nurseries Ltd | Agriculture & fishing | 2023 |
| Darsco Wealth Mgmt Limited | Professional & scientific | 2021 |
| Dart Energy (Europe) Limited | Mining & quarrying | 2003 |
| Dart Leader Limited | Energy | 2023 |
| Dart Technology Solutions Limited | Wholesale & retail | 2023 |
| Dartcom Alliance L.P. | | 2014 |
| Dartex Global LP | | 2015 |
| Dartford Capital LP | | 2015 |
| Dartmond Resources L.P. | | 2015 |
| Darton Ventures L.P. | | 2013 |
| Dartsmart Technologies Ltd | Information & communication | 2025 |
| Dartwell Investments L.P. | | 2010 |
| Daru Real Estate Ltd | Real estate | 2025 |
| Darvel Landscaping & Building Services Limited | Construction | 2024 |
| Darvel United LP | | 2014 |
| Darwin Founder Partnership LP | | 2007 |
| Darwin General Partner 1 Limited | Administrative & support | 2006 |
| Darwin General Partner 2 Limited | Administrative & support | 2006 |
| Darwin General Partner LLP | | 2013 |
| Darwin General Partnership LP | | 2007 |
| Darycco Ltd | Professional & scientific | 2025 |
| DAS Anaesthesia Limited | Health & social care | 2019 |
| Dascoin LP | | 2018 |
| Dash Growth Ltd | Professional & scientific | 2025 |
| Dastle Company LP | | 2017 |
| Dasybite Capital LP | | 2013 |
| DAT Hospitality Consultants Ltd | Professional & scientific | 2024 |
| DAT NAV Ltd | Information & communication | 2019 |
| Data Early LP | | 2016 |
| Data LED Design Ltd | Information & communication | 2016 |
| Data LLM Consult Mena Ltd | Information & communication | 2026 |
| Data Republic Limited | Information & communication | 2023 |
| Data Tech Consultancy Limited | Information & communication | 2022 |
| Data-Tech Europe L.P. | | 2011 |
| Databot Media Technologies Ltd. | Information & communication | 2018 |
| Databridge Consulting Ltd | Professional & scientific | 2025 |
| Datacell & Associates | | 2000 |
| Datacenta Hosting (Scotland) Ltd | Information & communication | 2000 |
| Dataclout Ltd | Wholesale & retail | 2020 |
| Datacom Alliance LP | | 2016 |
| Datacom International L.P. | | 2008 |
| Datacom Projects LP | | 2015 |
| Datacoz Limited | Information & communication | 2016 |
| Dataflow Global L.P. | | 2011 |
| Datainsightai Ltd | Information & communication | 2023 |
| Datalux L.P. | | 2015 |
| Datamax L.P. | | 2014 |
| Datapa Limited | Information & communication | 1998 |
| Datapaga LP | | 2017 |
| Dataplus Universal LP | | 2015 |
| Datasoftsolutions LP | | 2014 |
| Datasurance Limited | Information & communication | 2018 |
| Datasured Ltd | Information & communication | 2020 |
| Datax Worldwide LP | | 2012 |
| Dataye Limited | Information & communication | 2022 |
| Datcom Projects L.P. | | 2012 |
| Datestar Systems LP | | 2018 |
| Datilon Limited | Information & communication | 2025 |
| Datonika Limited | Information & communication | 2023 |
| Datrys Legal Limited | Professional & scientific | 2025 |
| Datum Line LP | | 2017 |
| Datum Resource Management Limited | Real estate | 1999 |
| DATUM360 Limited | Information & communication | 2009 |
| Daubenton LP | | 2026 |
| Dauga LP | | 2014 |
| Dava Enterprises Limited | Construction | 1982 |
| Davaar Marine Consultancy Limited | Professional & scientific | 2018 |
| Dave Morris Lighting Design Ltd | Other services | 2022 |
| Dave Thom Limited | Information & communication | 2009 |
| Davedebbie Film Production Ltd | Administrative & support | 2025 |
| Daven Asset Management LP | | 2016 |
| Daven Conception LP | | 2017 |
| Davey Continuity Limited | Information & communication | 2011 |
| Davgor Limited | Hospitality | 2020 |
| David & David Consultants Limited | Professional & scientific | 2025 |
| David Barnes T/A Fastlane Spraymarkings Ltd | Manufacturing | 2014 |
| David Bell Planning Ltd | Professional & scientific | 2019 |
| David Berry LP | | 2017 |
| David Black Mcfarlane Limited | Wholesale & retail | 2026 |
| David Blaikie Architects Limited | Professional & scientific | 2015 |
| David Boodoo Electrical Contracting Limited | Construction | 2023 |
| David Brown Design Group Ltd | Professional & scientific | 2014 |
| David Denisa Limited | Wholesale & retail | 2024 |
| David Fisher & Sons (Edinburgh) Limited | Construction | 2010 |
| David Flockhart Limited | Professional & scientific | 2005 |
| David Grierson Ltd | Construction | 2010 |
| David Hodgkinson & Co Limited | Professional & scientific | 2011 |
| David Hood Consulting Limited | Professional & scientific | 1995 |
| David Irons & Sons Limited | Hospitality | 2005 |
| David JH Allan Consultancy Limited | Information & communication | 2024 |
| David John & SON Kitchens Limited | Construction | 2025 |
| David K Limited | Hospitality | 2017 |