| Dashmeasure Limited | Real estate | 1987 |
| Data Management Consultants Limited | Real estate | 1987 |
| Database Masters Limited | Information & communication | 1984 |
| Dataforge IT Limited | Information & communication | 2025 |
| Dataplus Limited | Information & communication | 1992 |
| Dataprint Business Systems Limited | | 1989 |
| Datasend Limited | | 1985 |
| Datawise Limited | Information & communication | 2008 |
| Dauntless Solutions Ltd | Wholesale & retail | 2024 |
| Dave Bavin Electrical Services Limited | Construction | 2002 |
| Davenport Construction Limited | Construction | 1994 |
| Davenway Limited | Professional & scientific | 1980 |
| David Barke (Holdings) Limited | Financial services | 1981 |
| David Crown Management Services Limited | Administrative & support | 2003 |
| David E King Bespoke Decorators Limited | Construction | 2024 |
| David J. Thomas (Surveys) Limited | | 1978 |
| David LEE Brickwork Limited | Construction | 2002 |
| David Pomphrett Flooring Services Limited | Construction | 1999 |
| David Soper & Co. Limited | Financial services | 2007 |
| David Taylor (Building Contractor) Limited | Construction | 1966 |
| Davidson Healthcare Limited | Health & social care | 2025 |
| Davidson Services Global Limited | Health & social care | 2024 |
| Davira Essentials Limited | Wholesale & retail | 2025 |
| Dawlish Developments Limited | Real estate | 1988 |
| Daws Heath Timber Limited | Wholesale & retail | 2001 |
| Dawson Hume Limited | Professional & scientific | 1992 |
| Daybreak WDC Ltd | Construction | 2020 |
| Daybreak Windows Ltd | Real estate | 2020 |
| Daybright Limited | Hospitality | 2017 |
| Daylight Health Limited | Health & social care | 2010 |
| Daytel Limited | Construction | 1999 |
| Dayvelopments Ltd | Real estate | 2020 |
| DB Controls Ltd | Energy | 2024 |
| DB Investments Limited | Administrative & support | 1995 |
| DBA Technologies Limited | Information & communication | 1987 |
| DBC Mesa Limited | Extraterritorial | 2000 |
| Dbfi Limited | Construction | 2019 |
| DBI FIX Ltd | Construction | 2015 |
| DBR & Associates Limited | Professional & scientific | 2000 |
| DC Analytics Ltd | Extraterritorial | 2022 |
| DC Angel Investors Ltd | Extraterritorial | 2022 |
| DC Appliances Ltd | Extraterritorial | 2022 |
| DC Art & Design Ltd | Extraterritorial | 2022 |
| DC Blends Ltd | Extraterritorial | 2022 |
| DC Bottling Ltd | Extraterritorial | 2022 |
| DC Brain Ltd | Extraterritorial | 2022 |
| DC Butler Ltd | Extraterritorial | 2022 |
| DC City Vehicles Ltd | Extraterritorial | 2022 |
| DC Distributors Ltd | Extraterritorial | 2022 |
| DC Drinks Ltd | Extraterritorial | 2022 |
| DC Event Managers Ltd | Extraterritorial | 2022 |
| DC Farmers Ltd | Extraterritorial | 2022 |
| DC Financing Ltd | Extraterritorial | 2022 |
| DC Firm Ltd | Extraterritorial | 2022 |
| DC Flow Ltd | Extraterritorial | 2022 |
| DC Fruits Ltd | Extraterritorial | 2022 |
| DC Heavy Industries Ltd | Extraterritorial | 2022 |
| DC Hotels Ltd | Extraterritorial | 2022 |
| DC Insurance Ltd | Extraterritorial | 2022 |
| DC Light Motors Ltd | Extraterritorial | 2022 |
| DC M&A Ltd | Extraterritorial | 2022 |
| DC Machinery Ltd | Extraterritorial | 2022 |
| DC Margins Ltd | Extraterritorial | 2022 |
| DC Maritime Ltd | Extraterritorial | 2022 |
| DC Marketing Ltd | Extraterritorial | 2022 |
| DC Mechanics Ltd | Extraterritorial | 2022 |
| DC Metals Ltd | Extraterritorial | 2022 |
| DC Mining Ltd | Extraterritorial | 2022 |
| DC Money Ltd | Extraterritorial | 2022 |
| DC Operators Ltd | Extraterritorial | 2022 |
| DC Plan Ltd | Extraterritorial | 2022 |
| DC Plantations Ltd | Extraterritorial | 2022 |
| DC Reality Ltd | Extraterritorial | 2022 |
| DC Renewables Ltd | Extraterritorial | 2022 |
| DC Repairs Ltd | Extraterritorial | 2022 |
| DC Shipping Ltd | Extraterritorial | 2022 |
| DC Shops Ltd | Extraterritorial | 2022 |
| DC Sparta Ltd | Extraterritorial | 2022 |
| DC Story Ltd | Extraterritorial | 2022 |
| DC Themes Ltd | Extraterritorial | 2022 |
| DC Trainer Ltd | Extraterritorial | 2022 |
| DC Warehouse Ltd | Extraterritorial | 2022 |
| DC Water Treatment Ltd | Extraterritorial | 2022 |
| DC Wave Ltd | Extraterritorial | 2022 |
| DC Wife Ltd | Extraterritorial | 2022 |
| DC Workers Ltd | Extraterritorial | 2022 |
| DC Yachting Ltd | Extraterritorial | 2022 |
| DCD Global Trading Ltd | Wholesale & retail | 2026 |
| DCH Estates Limited | Real estate | 2000 |
| DCL Early Years Services Ltd | Education | 2019 |
| Ddgc Limited | Construction | 2007 |
| DDS Construction Ltd | Construction | 2016 |
| Ddsl Limited | Manufacturing | 2007 |
| DE Londres Properties Ltd | Real estate | 2023 |
| De-Groot Property Consultants Limited | Professional & scientific | 2006 |
| Deagrela Ltd | Information & communication | 2025 |
| Deal & Deals Ltd | Wholesale & retail | 2025 |
| Deal Ducket Ltd | Wholesale & retail | 2025 |
| Dealfame Limited | Real estate | 1995 |
| Dealigent Ltd | Information & communication | 2024 |