| Dsml Limited | Real estate | 2018 |
| DSP Trading Limited | Hospitality | 2007 |
| DSR Cleaning Services Limited | Administrative & support | 2014 |
| Dssfashion Limited | Wholesale & retail | 2024 |
| DST Business Ltd | Professional & scientific | 2014 |
| DST Digital Ltd | Information & communication | 2023 |
| DT Baits Limited | Manufacturing | 2020 |
| DT D Marketing Limited | Professional & scientific | 2025 |
| DT Fixing Ltd | Construction | 2024 |
| DT Motorsport Engineering Limited | Manufacturing | 2023 |
| DTA Holdings Ltd | Real estate | 2021 |
| DTA Revolutions Ltd | Administrative & support | 2012 |
| DTC Comms Limited | Information & communication | 2019 |
| DTE Accountants Limited | Professional & scientific | 2009 |
| DTG Cladding Limited | Construction | 2025 |
| DTP Print Group Ltd | Manufacturing | 2016 |
| DTS Media and Marketing Ltd | Extraterritorial | 2011 |
| DTW Airsoft Limited | Wholesale & retail | 2016 |
| Duaa Foods Ltd | Hospitality | 2026 |
| Dual Studios Games Limited | Information & communication | 2025 |
| Dualcomm Ltd | Construction | 2012 |
| Dublon Insurance Brokers Limited | Administrative & support | 2006 |
| Duck Hall Farm Limited | Construction | 2016 |
| Duckdooart Ltd | Arts & recreation | 2023 |
| Ducktail Creative Ltd | Extraterritorial | 2023 |
| Duct Duct Grease Ltd | Administrative & support | 2024 |
| Ductworx Ltd | Administrative & support | 2019 |
| Dudley Property Rentals (UK) Ltd | Real estate | 2022 |
| Dukelow Construction Limited | Construction | 2018 |
| Duncan Clark & Beckett Ltd | Professional & scientific | 2019 |
| Duncan Court Clacton Management Company Limited | Households | 1986 |
| Dunedin Property (Highlands) Ltd | Hospitality | 2026 |
| Dunlin Press Limited | Information & communication | 2014 |
| Dunmow Town FC Ltd | Arts & recreation | 2022 |
| Dunn's Transport Consultancy and Training Ltd | Professional & scientific | 2026 |
| Dunning Barbour Limited | Real estate | 2024 |
| Dunsford Hall Estates Limited | Real estate | 2002 |
| Durable Roofing Solutions Ltd | Construction | 2024 |
| Durrant Engineering Limited | Construction | 2003 |
| Duruedma Limited | Professional & scientific | 2023 |
| Dutch Landscape Architects Ltd | Professional & scientific | 2021 |
| Dutypaid Logistics Ltd | Transport & logistics | 2025 |
| DV Music Limited | Arts & recreation | 2017 |
| DVK Construct Ltd | Construction | 2016 |
| DVL Investments Ltd | Real estate | 2025 |
| DW Todman Ltd | Professional & scientific | 2016 |
| DWELLINGS4U Construction Limited | Construction | 2018 |
| DWL Mortgages Ltd | Financial services | 2019 |
| DWT Holdings Limited | Financial services | 2022 |
| Dyer Mackay Holdings Ltd | Real estate | 2020 |
| Dynamic Bookkeeping Ltd | Professional & scientific | 2016 |
| Dynamic Data Ltd | Information & communication | 2020 |
| Dynamic Enterprise Solutions Ltd | Professional & scientific | 2019 |
| Dynamic Insulation Ltd | Construction | 2019 |
| Dynamic Property Investments Limited | Construction | 2012 |
| Dynasty Entreprises Limited | Wholesale & retail | 2025 |
| DZ Carpentry Limited | Construction | 2023 |
| E & a Construction Ltd | Construction | 2018 |
| E & H Ohara Limited | Wholesale & retail | 2026 |
| E & N Foodies Market Limited | Administrative & support | 2025 |
| E & SON Property Ltd | Real estate | 2024 |
| E a P Property Services Limited | Professional & scientific | 1992 |
| E B Network Solutions Limited | Information & communication | 2018 |
| E C Cars (UK) Ltd | Wholesale & retail | 2017 |
| E F I (Loughton) Limited | Real estate | 2000 |
| E I B Landscaping Ltd | Administrative & support | 2023 |
| E S Memorabilia Ltd | Wholesale & retail | 2023 |
| E W Business Services Limited | Administrative & support | 2016 |
| E X Systems Eastern Limited | Construction | 2018 |
| E&C Couriers Ltd | Transport & logistics | 2025 |
| E&Dd Ltd | Real estate | 2021 |
| E&T Property Solution Ltd | Construction | 2026 |
| E-Handles Ltd | Wholesale & retail | 2010 |
| E-Money Security Trustee Ltd | Administrative & support | 2018 |
| E-Sign Media Limited | Information & communication | 2011 |
| E.A. & H.M. Bull Limited | Manufacturing | 1973 |
| E.A. Brickwork Limited | Construction | 2014 |
| E.Halsall & Sons Limited | Agriculture & fishing | 1962 |
| E.Massa Ortho Ltd | Health & social care | 2025 |
| E.V. Matthews Limited | Real estate | 1944 |
| E3 Associates Ltd | Professional & scientific | 2023 |
| E4 Holdings Limited | Financial services | 2025 |
| E4 Strategic (UK) Ltd | Information & communication | 2021 |
| EA (2013) Ltd | Administrative & support | 2013 |
| EA Cars Ltd | Wholesale & retail | 2021 |
| EA Cousinz Ltd | Other services | 2018 |
| EA Home Physio Ltd | Other services | 2023 |
| Ea&G Property Management Ltd | Real estate | 2024 |
| Eadetech Limited | Information & communication | 2003 |
| Eagle Accountancy Services Ltd | Professional & scientific | 2005 |
| Eagle Hand Carwash and Valeting Ltd | Other services | 2020 |
| Eagle Opticals UK Ltd. | Information & communication | 2014 |
| Eagle Way Brentwood Management Company Limited | Real estate | 2021 |
| Eaglecrest Services Limited | Construction | 1998 |
| Eaglegate (Stopes & Arch House) RTM Company Limited | Households | 2016 |
| Eaio Ltd | Health & social care | 2015 |
| EAM Consultancy Ltd | Professional & scientific | 2022 |
| EAP Construction Consultants Limited | Professional & scientific | 2001 |
| EAP Envoy Limited | Construction | 2003 |
| Earls Colne Chippy Ltd | Hospitality | 2022 |