| CSM Group Investments Ltd | Real estate | 2016 |
| CSW Logistics Limited | Water & waste | 2014 |
| CT Pro Cleaners Limited | Administrative & support | 2024 |
| Cubed Ltd | Professional & scientific | 2020 |
| Cunnery House Ltd | Real estate | 2018 |
| Curtis Concept Design Ltd | Administrative & support | 2025 |
| CV Energy Limited | Professional & scientific | 2010 |
| CWS Heating Limited | Construction | 2003 |
| CX Trading Ltd | Wholesale & retail | 2026 |
| Cyan Estates Ltd | Real estate | 2019 |
| Cyan Financial Services Ltd | Financial services | 2025 |
| Cyan Holdings Ltd | Real estate | 2020 |
| Cyan Pro Ltd | Professional & scientific | 2022 |
| Cynbor Ingredients Ltd. | Extraterritorial | 2014 |
| D & N Developments Ltd | Real estate | 2021 |
| D & R Bagga Property Services Ltd | Real estate | 2022 |
| D a Custom Designs Ltd | Wholesale & retail | 2025 |
| D&A International Trading Ltd | Administrative & support | 2026 |
| D&E Property Lettings Limited | Real estate | 2019 |
| D&T Chemical Limited | Extraterritorial | 2018 |
| D.W. Financial Consultancy Limited | Professional & scientific | 2020 |
| D.W. Financial Management Limited | Extraterritorial | 2020 |
| D.W. Financial Projects Limited | Extraterritorial | 2020 |
| D87 Ltd | Wholesale & retail | 2024 |
| Daboluozf Co., Ltd | Wholesale & retail | 2025 |
| Daheng Trading Co., Ltd | Administrative & support | 2023 |
| Dale Consultancy Limited | Information & communication | 2008 |
| Dalian Tian RUI Xiang International Shipping Agency Co., Ltd. | Other services | 2018 |
| DAN Hackett Media Limited | Professional & scientific | 2024 |
| Danel Group Co., Ltd. | Administrative & support | 2022 |
| Daniel Dalton (Bbrt Consulting) Limited | Professional & scientific | 2014 |
| Daniel Sanders Ltd | Information & communication | 2019 |
| Daojin International Co., Limited | Administrative & support | 2024 |
| Dartmouth Bakeries Limited | Real estate | 2022 |
| Dassett Vale Management Limited | Households | 2017 |
| Datec Packaging Limited | Manufacturing | 2012 |
| Datnav Technologies Ltd | Information & communication | 2004 |
| Datum Fitout and Refurbishment Limited | Construction | 2007 |
| Daventry Road Implantology Ltd | Real estate | 2018 |
| David Alexander Mackenzie Foundation | Other services | 2021 |
| David Andrews Products Limited | Professional & scientific | 1992 |
| David Shilton Construction Ltd | Construction | 2024 |
| Dawar Medical Services Limited | Health & social care | 2013 |
| DB Commercial Services Ltd | Professional & scientific | 2020 |
| DB Residents Limited | Households | 2020 |
| Dcolor Industrial Ltd | Extraterritorial | 2018 |
| Decorite Ltd | Construction | 2026 |
| Deeptrust Trading Limited | Extraterritorial | 2011 |
| Defa International Trade Co., Ltd | Extraterritorial | 2018 |
| Delft Industries Limited | Extraterritorial | 2018 |
| Delta Ashford OP Co Limited | Hospitality | 2017 |
| Delta Belton Woods OP Co Limited | Hospitality | 2017 |
| Delta Cambridge Belfry Limited | Hospitality | 2020 |
| Delta Cheltenham Chase OP Co Limited | Hospitality | 2017 |
| Delta Chesford Grange OP Co Limited | Hospitality | 2017 |
| Delta Crewe Hall OP Co Limited | Hospitality | 2017 |
| Delta Dunston Hall OP Co Limited | Hospitality | 2017 |
| Delta Forest Pines OP Co Limited | Hospitality | 2017 |
| Delta Hampshire Court OP Co Limited | Hospitality | 2017 |
| Delta Norton Park OP Co Limited | Hospitality | 2017 |
| Delta Oxford Belfry OP Co Limited | Hospitality | 2017 |
| Delta Park OP Co Limited | Hospitality | 2017 |
| Delta Portfolio Management (UK) Limited | Real estate | 2018 |
| Delta Portfolio Property 2 LLP | | 2017 |
| Delta Portfolio Property LLP | | 2017 |
| Delta Regis UK Limited | Other services | 2013 |
| Delta Slaley Hall OP Co Limited | Hospitality | 2017 |
| Delta Stratford Manor OP Co Limited | Hospitality | 2017 |
| Delta Stratford OP Co Limited | Hospitality | 2017 |
| Delta Telford OP Co Limited | Hospitality | 2017 |
| Delta Westerwood OP Co Limited | Hospitality | 2017 |
| Demanufacture Limited | Information & communication | 2018 |
| Demmo Limited | Professional & scientific | 1999 |
| Denor Industries Co., Ltd. | Extraterritorial | 2015 |
| Denta Consult GmbH Limited | Extraterritorial | 2006 |
| Depictar Limited | Information & communication | 2022 |
| Derek Gruszeckyj Limited | Information & communication | 1997 |
| DES Thompson Limited | Other services | 1999 |
| Desert Wolf Machinery Ltd | Administrative & support | 2024 |
| Design Rule Limited | Information & communication | 1992 |
| Devalina Property and Investment PVT Ltd | Real estate | 2024 |
| Deyi Metalware Co. Limited | Administrative & support | 2024 |
| Dforce Engineering Ltd | Manufacturing | 2015 |
| Dforce Group Ltd | Financial services | 2026 |
| Dhang Group Co., Ltd | Extraterritorial | 2021 |
| Diaz Hair Ltd | Other services | 2015 |
| Didtek International Ltd | Administrative & support | 2014 |
| Dietfu Instruments International Group Co., Ltd | Manufacturing | 2024 |
| Digital Flow Ltd. | Professional & scientific | 2011 |
| Digital OWL Marketing Ltd | Professional & scientific | 2019 |
| Digital Sass Ltd | Information & communication | 2022 |
| Dijiu Culture Limited | Extraterritorial | 2021 |
| Dino's Supplements Ltd | Wholesale & retail | 2021 |
| Distribooter Limited | Transport & logistics | 2012 |
| Distribution 13 Ltd | Wholesale & retail | 2014 |
| DIV UK Industrial Co Ltd | Administrative & support | 2023 |
| Diverse Dynamic Solutions Limited | Administrative & support | 2010 |
| Divine Build & Construction Ltd | Construction | 2020 |
| DK 812 (2019) Limited | Construction | 2018 |
| DK 812 Limited | Financial services | 2015 |