| Crush Wines Ltd | Wholesale & retail | 2005 |
| Crypto Tax Advice Ltd | Professional & scientific | 2018 |
| Cush Property Developments Ltd | Construction | 2017 |
| Cush Property Investments Ltd | Real estate | 2017 |
| CUT Bait Ltd | Professional & scientific | 2023 |
| Cyber Certainty Ltd | Information & communication | 2023 |
| Cybro Ltd | Wholesale & retail | 2026 |
| D.Goodenough Transport & Removals Ltd | Transport & logistics | 2014 |
| D.L Windows Limited | Construction | 2008 |
| D.W. Pickford & SON Limited | Agriculture & fishing | 2003 |
| DAC Property Group Ltd | Real estate | 2018 |
| Damp Demand Ltd | Professional & scientific | 2026 |
| Damson House Ltd | Professional & scientific | 2022 |
| DAN Daniel Ltd | Transport & logistics | 2023 |
| Dantar Limited | Hospitality | 2006 |
| Danvers PEN Limited | Financial services | 2024 |
| Danzek Ltd | Real estate | 2020 |
| Dappel Ltd | Information & communication | 2023 |
| Darren Blackman Heating and Plumbing Services Ltd | Construction | 2021 |
| Dart Group Ltd | Construction | 2022 |
| Data Fusion Services Limited | Information & communication | 1994 |
| Daxel Homes Ltd | Real estate | 2024 |
| Daylan Gleed Roofing Limited | Construction | 2005 |
| Dayta-Day Ltd | Professional & scientific | 2025 |
| DC Autocare Ltd | Wholesale & retail | 2019 |
| DC Engineering Consultancy Limited | Construction | 2017 |
| DCP Group Ltd | Financial services | 2023 |
| DCP Relocations Ltd | Administrative & support | 2026 |
| DCP Short Stays Ltd | Hospitality | 2023 |
| DDA (Quality Quest) Limited | Professional & scientific | 1991 |
| Deacon Plymouth Properties Ltd | Real estate | 2020 |
| Deacon Property Solutions Ltd | Real estate | 2026 |
| Deceuninck Holdings (UK) Limited | Professional & scientific | 1999 |
| Deceuninck Limited | Manufacturing | 1981 |
| Decor Garage Doors Ltd | Manufacturing | 2014 |
| Delmarco Properties Ltd | Real estate | 2017 |
| Delta Electrical Contracting Limited | Construction | 2007 |
| Derry Hill Management Company Limited | Households | 2007 |
| Deus Solis Properties Ltd | Real estate | 2023 |
| Developers With Vision Ltd | Construction | 2021 |
| Devizes Taxis Limited | Transport & logistics | 2015 |
| Devspike Technology Ltd | Information & communication | 2018 |
| DI Detailing Ltd | Administrative & support | 2025 |
| Digital Trading Creative Limited | Information & communication | 2008 |
| Dispak (Midlands) Limited | Extraterritorial | 1975 |
| Dispak (Northern) Limited | Extraterritorial | 2019 |
| Dispak (Southern) Limited | Professional & scientific | 1973 |
| Dispak Group Limited | Real estate | 2022 |
| Dispak Limited | Administrative & support | 1986 |
| DKO Ltd | Arts & recreation | 2025 |
| DLP Land Ltd | Real estate | 2024 |
| DM Wheel Systems UK Limited | Manufacturing | 2020 |
| DMG Garden Buildings Ltd | Administrative & support | 2015 |
| DMN UK Limited | Manufacturing | 1998 |
| DMS Scaffolding Ltd | Construction | 2015 |
| Dolager Developments Ltd | Construction | 2025 |
| Dolager Group Ltd | Financial services | 2025 |
| Dollyd Limited | Manufacturing | 2012 |
| Dolphin Care Stairlifts Limited | Extraterritorial | 2024 |
| Dolphin Stays Ltd | Hospitality | 2019 |
| DPS Plumbing & Heating Engineer & SON Ltd | Construction | 2010 |
| DR. Hayes Aesthetics Ltd | Health & social care | 2025 |
| Dragonfly Social Work Services Ltd | Health & social care | 2018 |
| Drake SPM Property Solutions Ltd | Real estate | 2020 |
| Drake SPM SA Management Ltd | Real estate | 2025 |
| Drake SPM SA Property Ltd | Real estate | 2025 |
| Drewett Farming Ltd | Agriculture & fishing | 2014 |
| Driftwood Associates Limited | Real estate | 2017 |
| DT Living Ltd | Real estate | 2020 |
| DTL SPV 1 Ltd | Real estate | 2023 |
| DTL SPV 2 Ltd | Real estate | 2023 |
| Duah Heating Ltd | Construction | 2019 |
| Duncan Software Consulting Ltd | Information & communication | 2018 |
| DW Groundworks & Construction Ltd | Construction | 2018 |
| Dycotec Materials Ltd | Professional & scientific | 2014 |
| E-Medical Revision Limited | Education | 2012 |
| E.A.Buckland & Sons Limited | Real estate | 2006 |
| ECH Construction Ltd | Construction | 2013 |
| Echo Insights Ltd | Professional & scientific | 2024 |
| ECI Property Ltd | Real estate | 2021 |
| Ecopow Limited | Wholesale & retail | 2010 |
| Eden (Calne) Ltd | Other services | 2019 |
| Edreds Court (Maundrells Yard) Management Company Limited | Households | 2002 |
| Educational Learning Mats Limited | Education | 2011 |
| EJS Accountancy Services Ltd | Professional & scientific | 2024 |
| Elan Property Finance Ltd | Financial services | 2021 |
| Electrical M.A.N Ltd. | Manufacturing | 2016 |
| ELM Grove (Calne) Management Company Limited | Households | 2008 |
| Elom Properties Limited | Real estate | 2023 |
| ELP Guttering Services Ltd | Construction | 2025 |
| Elsa Trading Limited | Professional & scientific | 2008 |
| Emirai Group Ltd | Financial services | 2024 |
| Emirai Ltd | Education | 2019 |
| Emirai Properties Ltd | Real estate | 2024 |
| Empower Homes Management Ltd | Real estate | 2020 |
| Endgame Investments Limited | Real estate | 2025 |
| English Rose Developments Limited | Construction | 2004 |
| Ensignia Client Solutions Ltd | Real estate | 2018 |
| Ensignia Group Ltd | Financial services | 2018 |
| Ensignia Holdings Ltd | Real estate | 2018 |