| Davison Group Holdings Limited | Real estate | 2024 |
| Daylight Surveys Limited | Construction | 2023 |
| Dc-Electrical Contractors (Essex) Ltd | Construction | 2025 |
| DCS Building & Maintenance Limited | Construction | 2012 |
| DDV Services Ltd | Construction | 2023 |
| DDW Developments Ltd | Construction | 2017 |
| Deepway Limited | Professional & scientific | 1980 |
| Delineation Restraints Systems Limited | Professional & scientific | 2016 |
| Delta Network Cabling Limited | Other services | 1997 |
| Delta-Suisse Limited | Financial services | 1998 |
| Demandheads Limited | Professional & scientific | 2021 |
| Derek Williams Limited | Professional & scientific | 2011 |
| DES Thomas Consultancy Limited | Professional & scientific | 2021 |
| Design Haus Services Ltd | Construction | 2018 |
| Design Holmes Limited | Construction | 2014 |
| Designtakeaway Limited | Administrative & support | 2010 |
| Deval 2015 Limited | Financial services | 2015 |
| Development for Trainers Limited | Administrative & support | 2016 |
| Devereux Road Property Company Ltd | Real estate | 2004 |
| Devflame Limited | Information & communication | 1994 |
| Devine Care Services Ltd | Health & social care | 2009 |
| DF Services & ATM Solutions Ltd | Manufacturing | 2015 |
| Diagnostics Insight Ltd | Professional & scientific | 2024 |
| Digital Commerce Consultancy Ltd | Professional & scientific | 2022 |
| Digital ID Compliance Group Ltd | Information & communication | 2025 |
| Direct Capital Management Ltd | Financial services | 2026 |
| Direct Installs Limited | Manufacturing | 2022 |
| Directmarkethub Ltd | Wholesale & retail | 2026 |
| Distinctive IT Solutions Limited | Information & communication | 2008 |
| Diva Developments & Investments Limited | Construction | 2020 |
| DJB Contractors Limited | Construction | 2024 |
| DJL GAS Utilities Ltd | Construction | 2022 |
| DJW Couriers Ltd | Transport & logistics | 2023 |
| DK Telemarketing Ltd | Information & communication | 2018 |
| DLB Finance Ltd | Financial services | 2016 |
| DLP Express Utilities Limited | Construction | 2010 |
| DM Lifts Limited | Manufacturing | 2019 |
| DMK Windows Ltd | Construction | 2012 |
| Dmpg Plumbing Services Limited | Construction | 2025 |
| DNK Estates Ltd | Professional & scientific | 2021 |
| Dog Training Centre of Excellence Ltd | Other services | 2017 |
| Dolphin Assist Limited | Real estate | 2006 |
| Don'T Shout OUT Ltd | Education | 2016 |
| Dota Consulting Services Limited | Information & communication | 2017 |
| Double Mack Limited | Arts & recreation | 2022 |
| Doublestream Limited | Information & communication | 2001 |
| Dowman Plumbing and Heating Limited | Construction | 2019 |
| Down the Line Limited | Information & communication | 2010 |
| DPL Builders Limited | Construction | 2013 |
| Dpmb Developments Limited | Construction | 2024 |
| DR E. Daniells Ltd | Health & social care | 2006 |
| DR M Medical Practice Ltd | Health & social care | 2023 |
| DR Sylvia Aneke Limited | Health & social care | 2012 |
| Drag and Drop Limited | Information & communication | 2001 |
| Drazal Limited | Real estate | 2018 |
| Dream Team Worldwide Limited | Administrative & support | 2015 |
| Drei Ltd | Professional & scientific | 2020 |
| Drillips Enterprise Limited | Professional & scientific | 2017 |
| Drinks List Ltd | Information & communication | 2015 |
| Drive Fuze Limited | Information & communication | 2022 |
| Droneoperations Ltd | Professional & scientific | 2023 |
| Duck END Farm Limited | Agriculture & fishing | 1994 |
| Duck END Properties Limited | Real estate | 2012 |
| Dulwichdigitalfx Ltd | Information & communication | 2025 |
| DUO Trees Limited | Agriculture & fishing | 2024 |
| DVB Abseil & Mastic Limited | Construction | 2010 |
| DWC Management Solutions Limited | Professional & scientific | 2016 |
| E K K Solutions Limited | Administrative & support | 2013 |
| E M S London Limited | Construction | 2012 |
| Eagle Data Limited | Construction | 1994 |
| Eagles Nurture Limited | Extraterritorial | 2024 |
| Eastern Scaffolding Limited | Construction | 2001 |
| Easton Landscaping Ltd | Administrative & support | 2024 |
| Eastville Enterprises Limited | Wholesale & retail | 2010 |
| Eastway Digital Media Ltd | Information & communication | 2023 |
| EAT 2000 Limited | Hospitality | 2020 |
| Ebbsfleet Properties Limited | Other services | 2024 |
| EBD Trade Ltd | Construction | 2020 |
| Ebele Medical Limited | Health & social care | 2015 |
| Echogain Limited | Other services | 2014 |
| Eclipse Branding Ltd | Manufacturing | 2016 |
| Eclipse Investments Ltd | Real estate | 2018 |
| Eclipse Merchandise Ltd | Manufacturing | 2019 |
| Eco Steam Solutions Limited | Wholesale & retail | 2019 |
| Ecobuild Roofing Ltd | Construction | 2023 |
| Economical-Solar Limited | Administrative & support | 2007 |
| Eden Smith Capital Limited | Professional & scientific | 2016 |
| Eden Smith Consulting Limited | Professional & scientific | 2016 |
| Eden Smith Group Limited | Other services | 2018 |
| Eden Smith Holdings Limited | Other services | 2019 |
| Eden Smith Limited | Professional & scientific | 2018 |
| EDK Holdings Ltd | Financial services | 2023 |
| EDK Services Limited | Information & communication | 2020 |
| Edward J Elliott Ltd | Construction | 2025 |
| Eepc Limited | Information & communication | 2021 |
| Ehwe Healthcare Ltd | Health & social care | 2018 |
| Eighty Proof Ltd | Hospitality | 2025 |
| EJJ Investments Limited | Real estate | 2026 |
| EJW Group Holdings Limited | Financial services | 2026 |
| Elements Tiling Limited | Construction | 2019 |