| DT Video Productions Limited | Information & communication | 2024 |
| DTB Corporations Ltd | Other services | 2023 |
| Dtma Coating Specialists Limited | Manufacturing | 2019 |
| DTW Ceramics (UK) Limited | Wholesale & retail | 2009 |
| DTW Ceramics Ltd | Wholesale & retail | 1995 |
| DTW Electronics Limited | Professional & scientific | 2019 |
| DTW Nails Ltd | Other services | 2024 |
| DU. Architecture Ltd | Professional & scientific | 2026 |
| Duality Neurolabs Ltd | Professional & scientific | 2025 |
| Dube Corporation Limited | Wholesale & retail | 2024 |
| Dubforce Tuning Limited | Manufacturing | 2013 |
| Dubiel Ltd | Professional & scientific | 2017 |
| Duce & Snax Limited | Hospitality | 2024 |
| Duchy Sky Limited | Manufacturing | 2024 |
| Dudarry Limited | Real estate | 2010 |
| Duer (Europe) Ltd | Wholesale & retail | 2024 |
| Dugan and Francis Holdings Ltd | Financial services | 2026 |
| Dugan Calmore Ltd | Construction | 2024 |
| Dugan Calmore Management Company Ltd | Households | 2026 |
| Dugan Carpentry Limited | Construction | 2024 |
| Dugan Fulmer Ltd | Construction | 2024 |
| Dugan Hampshire Ltd | Construction | 2026 |
| Dugan Homes Limited | Real estate | 2021 |
| Dugan London Limited | Construction | 2024 |
| Dugan Properties Limited | Real estate | 2026 |
| Duhok Restaurant Ltd | Hospitality | 2026 |
| Duke Electrical Services Ltd | Construction | 2013 |
| Duma-Su Ltd | Wholesale & retail | 2025 |
| Dumb and Dumber Limited | Construction | 2020 |
| Duncan and Verity Housing Ltd | Hospitality | 2025 |
| Dune Business Consulting Ltd | Professional & scientific | 2015 |
| Dunes Leisure Limited | Other services | 2026 |
| Dunglen Ltd | Financial services | 2004 |
| Dunsbury M.O.T Centre Ltd | Wholesale & retail | 2019 |
| Dunstan Thomas Group Limited | Information & communication | 2012 |
| Dunstan Thomas Holdings Limited | Information & communication | 2000 |
| Duplident Ltd | Health & social care | 2023 |
| Dusky Monkey Ltd | Hospitality | 2026 |
| Dutch Courage Emporium Limited | Manufacturing | 2014 |
| Dutch Italian Legal Services Ltd | Professional & scientific | 2023 |
| Dutu Decor Ltd | Construction | 2023 |
| Duua Limited | Hospitality | 2023 |
| DVB Food Services Ltd | Hospitality | 2021 |
| DVJ Contracting Ltd | Professional & scientific | 2019 |
| DW Grabs Limited | Transport & logistics | 2024 |
| DWA Claims Limited | Administrative & support | 2008 |
| Dwell Design Limited | Professional & scientific | 2009 |
| Dwell Projects Limited | Construction | 2012 |
| DWM Studios Limited | Health & social care | 2020 |
| DWS Consultancy (Southern) Ltd | Professional & scientific | 2024 |
| DWS Groundworks Ltd | Construction | 2016 |
| Dxclusive Services Ltd | Administrative & support | 2026 |
| DXG Holdings Limited | Real estate | 2018 |
| DYE Algorithmic Solutions Ltd | Information & communication | 2026 |
| Dylan Properties Limited | Real estate | 1998 |
| Dynami Millennium Ltd | Real estate | 2017 |
| Dynamic Dentures Ltd | Health & social care | 2022 |
| Dynamic Developments Holdings Ltd | Construction | 2026 |
| Dynamic Electrical Services South Limited | Construction | 2013 |
| Dynamic Health Care Solutions Limited | Health & social care | 2014 |
| Dynamic Leads Limited | Information & communication | 2021 |
| Dynamic Network Services Limited | Information & communication | 2001 |
| Dynamic Pace Ltd | Manufacturing | 2022 |
| Dynamic Property Management Services Ltd | Real estate | 2025 |
| Dynamite Property Solutions Limited | Real estate | 2022 |
| Dynasty Barbers Ltd | Other services | 2026 |
| Dynasty Salon Limited | Other services | 2024 |
| Dysart Nursery Limited | Education | 2020 |
| Dysart Press Limited | Arts & recreation | 2006 |
| E & a Installations (UK) Limited | Wholesale & retail | 2008 |
| E 2 I Holdings Limited | Professional & scientific | 2016 |
| E D P Investments Ltd | Construction | 2024 |
| E Trade Collectives Ltd | Wholesale & retail | 2025 |
| E-Solutions Group Ltd | Professional & scientific | 2019 |
| E.A. Humberstone & Co Limited | Real estate | 1956 |
| E.B Burton Group Ltd | Arts & recreation | 2025 |
| E.M.J. Management Limited | Wholesale & retail | 1996 |
| Eager Services Limited | Health & social care | 2006 |
| Eagle Tower Limited | Hospitality | 2004 |
| Eardley Film Accounting Limited | Information & communication | 2011 |
| Earth Conscious Limited | Wholesale & retail | 2015 |
| Earthoral Ltd | Wholesale & retail | 2026 |
| Ease UP the Pressure Ltd | Hospitality | 2024 |
| Easigrass Hampshire Ltd | Construction | 2024 |
| East Devon Crematorium Limited | Other services | 2010 |
| East Lodge Park (Management) Co. Limited | Households | 1973 |
| East London Aesthetics Co Limited | Health & social care | 2024 |
| East Rand Brands Ltd | Wholesale & retail | 2026 |
| Eastern Stores Chinese Supermarket Limited | Wholesale & retail | 2017 |
| Eastlodge Limited | Wholesale & retail | 1999 |
| Eastmond Electrical Installations Ltd | Construction | 2025 |
| Easy Post Ltd | Transport & logistics | 2016 |
| Easy-Fit Aerials Ltd | Information & communication | 2025 |
| Easymobile Network Ltd | Information & communication | 2022 |
| Easyreturnsco Ltd | Other services | 2025 |
| Easysim Limited | Information & communication | 2023 |
| EAT Group (Holdings) Limited | Hospitality | 2026 |
| Ebery Consulting Ltd | Professional & scientific | 2025 |
| Ebits-Solutions Ltd | Wholesale & retail | 2025 |
| EBP South Ltd | Education | 1997 |