| Dual Imports/Exports L.P. | | 2015 |
| Dubai Barber Ltd | Other services | 2024 |
| Dubai Family Office Ltd | Professional & scientific | 2025 |
| Dubai Musk Ltd | Wholesale & retail | 2026 |
| Dubaku LP | | 2013 |
| Dube Health Care Ltd Ltd | Health & social care | 2021 |
| Dubley SP | | 2001 |
| Dubon Café Ltd | Wholesale & retail | 2024 |
| Ducana Management LP | | 2015 |
| Duchesa Investments | | 2001 |
| Duchiban Investments | | 2001 |
| Duck EGG Blue Management Limited | Hospitality | 2015 |
| Ducomlab Limited | Wholesale & retail | 2025 |
| Duddingston Consultancy Limited | Professional & scientific | 2024 |
| Duddingston Contracts Ltd | Construction | 2022 |
| Duddingston Dental Practice Limited | Health & social care | 2011 |
| Duddingston Developments Limited | Real estate | 2018 |
| Duddingston Golf Club Limited | Arts & recreation | 1971 |
| Duddingston Kerr Limited | Information & communication | 2010 |
| Duddingston Physiotherapy Ltd | Health & social care | 2018 |
| Duddingston Private Hire Ltd | Administrative & support | 2019 |
| Duddingston Property Management Ltd | Real estate | 2025 |
| Dudingston Structure LP | | 2014 |
| Dudley Editions Ltd | Information & communication | 2023 |
| Duee Investments LP | | 2001 |
| Duffy Event Management 23 Limited | Wholesale & retail | 2017 |
| Duffy Joinery Ltd | Construction | 2022 |
| Dufrain Consulting Ltd | Information & communication | 2010 |
| Dufrain Group Limited | Professional & scientific | 2015 |
| Dugald Skene Architecture Ltd | Professional & scientific | 2017 |
| Duglife Properties Ltd | Real estate | 2026 |
| Duhman Consultancy Limited | Professional & scientific | 2025 |
| Duhok Edinburgh Ltd | Other services | 2025 |
| Duke Fitness and Wellbeing Ltd | Arts & recreation | 2023 |
| Duke Street Capital Parallel Fund Investment Limited Partnership | | 2007 |
| Duke Street Capital VI Feeder Limited Partnership | | 2007 |
| Duke Street Capital VI Fund Investment Limited Partnership | | 2006 |
| Dukosi Limited | Professional & scientific | 2003 |
| Dulicht Developments Limited | Construction | 2017 |
| Dulicht Homes Limited | Construction | 2015 |
| Dullen L.P. | | 2004 |
| Dulsie Wood Wind Farm Limited | Energy | 2023 |
| Dulvord Universal LP | | 2013 |
| Duman Chippy Ltd | Wholesale & retail | 2022 |
| Dumas Holdings Limited | Administrative & support | 2004 |
| Dumas Investments Limited | Professional & scientific | 2008 |
| Dumbarton, Pike & Associates | | 1992 |
| Dumblio Barber Ltd | Other services | 2017 |
| Dumfries Facilities (Holdings) Limited | Administrative & support | 2000 |
| Dumfries Facilities Limited | Construction | 1998 |
| Dumfries Farms Limited | Agriculture & fishing | 1986 |
| Dumfries Limited | Professional & scientific | 2016 |
| Dumplingqueen Ltd | Hospitality | 2023 |
| DUN Eideann Labs Ltd | Information & communication | 2025 |
| DUN Eideann Property Limited | Real estate | 2014 |
| Dunain SP | | 2000 |
| Dunard Fund | Financial services | 2016 |
| Dunbar Apartments Limited | Real estate | 2023 |
| Dunbar Management Investments Limited | Real estate | 1988 |
| Dunbar Property Investments Limited | Real estate | 2021 |
| Dunbeath Estates Limited | Other services | 2024 |
| Duncan Alexander Ltd | Real estate | 2014 |
| Duncan Amplification Limited | Manufacturing | 2025 |
| Duncan Cabs Ltd. | Extraterritorial | 2000 |
| Duncan Investment Trading (Scotland) Partnership SP | | 2022 |
| Duncan Mckenzie Property Ltd | Real estate | 2015 |
| Duncan Mclaren Locksmiths Ltd. | Other services | 2019 |
| Duncan Napier Limited | Professional & scientific | 2008 |
| Duncan Property Management Ltd | Real estate | 2024 |
| Duncan Street Limited | Wholesale & retail | 2023 |
| Duncan Walker Partnership Limited | Professional & scientific | 2015 |
| Duncan Whittaker Ltd | Health & social care | 2025 |
| Duncansby Limited | Real estate | 2014 |
| Duncanwallace.Co.Uk Ltd | Information & communication | 2024 |
| Duncastle SLP | | 2005 |
| Dundas & Wilson Staff Pension Trustee Limited | Administrative & support | 2007 |
| Dundas Fyfe Limited | Wholesale & retail | 1997 |
| Dundas Global Investors Limited | Financial services | 2012 |
| Dundas Group Trustees Limited | Administrative & support | 2026 |
| Dundas Partners LLP | | 2012 |
| Dundas Property Company Limited | Real estate | 2009 |
| Dundas Residential Limited | Real estate | 2015 |
| Dundas Veterinary Group Limited | Professional & scientific | 2016 |
| Dundee & Angus Wood Recycling CIC | Manufacturing | 2025 |
| Dundee and Airdrie SP | | 2000 |
| Dundee Healthcare Services Limited | Administrative & support | 1999 |
| Dundee Kilbride Investment Limited | Real estate | 1997 |
| Dunedin (Cape) Limited | Real estate | 2012 |
| Dunedin (FP III) Limited | Financial services | 2012 |
| Dunedin (Fund III) Limited | Real estate | 2014 |
| Dunedin (Funds G.P.) Limited | Financial services | 2008 |
| Dunedin (General Partner III) LLP | | 2012 |
| Dunedin (GP III) L.P. | | 2012 |
| Dunedin (GP III) Limited | Financial services | 2012 |
| Dunedin Builders Merchants Limited | Wholesale & retail | 1992 |
| Dunedin Buyout Co-Investment I L.P. | | 2016 |
| Dunedin Buyout Fund II L.P. | | 2006 |
| Dunedin Buyout Fund III L.P. | | 2012 |
| Dunedin Buyout Fund IV L.P. | | 2018 |
| Dunedin Buyout Fund L.P. | | 2001 |