| Docmorgan Limited | Health & social care | 2023 |
| Dodds Civil Engineering Limited | Construction | 2012 |
| Dog Friendly Businesses Ltd | Information & communication | 2021 |
| Dogleg Ltd | Information & communication | 2021 |
| Dollies Beauty Salon Limited | Other services | 2017 |
| Dollys Day Care & Boarding Ltd | Other services | 2023 |
| Doma Academy Ltd | Education | 2023 |
| Domestic Energy Ltd | Construction | 2025 |
| Dominator Ltd | Arts & recreation | 2018 |
| Domtec.Co.Uk Ltd | Information & communication | 2020 |
| Donegan Global Logistics Ltd | Transport & logistics | 2026 |
| Dont Skip Studios Limited | Information & communication | 2024 |
| Dovetail Joinery Ltd | Manufacturing | 2024 |
| DOW Schofield Watts Transaction Services (London) LLP | | 2018 |
| Dowling Ltd | Education | 2022 |
| Down Urology Limited | Health & social care | 2024 |
| DPA Decorating Limited | Construction | 2019 |
| DPF Cleaning Ltd | Wholesale & retail | 2014 |
| Dpfi Homes Ltd | Households | 2023 |
| Dpfi Property Management Ltd | Real estate | 2014 |
| DR AI Services Limited | Information & communication | 2023 |
| DR Andrew Wood Ltd | Professional & scientific | 2025 |
| DR H&H Properties Ltd | Construction | 2024 |
| DR Robert Baylis and Associates Limited | Health & social care | 2013 |
| DR Shonagh Dillon Consultancy Ltd | Professional & scientific | 2023 |
| DR Solv Ltd | Wholesale & retail | 2025 |
| DR Wilding Limited | Professional & scientific | 2023 |
| Dradfield Developments Ltd | Real estate | 2017 |
| Dragonfly Arts Centre C.I.C. | Health & social care | 2022 |
| Draws for Life Limited | Arts & recreation | 2025 |
| Drayton Decor Limited | Construction | 2003 |
| DRB Associates (Global) Consultancy Ltd | Professional & scientific | 2024 |
| Dream Flooring Specialists Ltd | Construction | 2017 |
| Dreambay Leisure Limited | Arts & recreation | 2004 |
| Dreamscape Gardens Ltd | Construction | 2025 |
| Dreamworks Developments Ltd | Construction | 2022 |
| Dreamz Talent Management Limited | Information & communication | 2019 |
| DRF Consultancy Limited | Professional & scientific | 2019 |
| DRG Television Limited | Information & communication | 2005 |
| Drive Academy Ltd | Information & communication | 2020 |
| Driver and Vehicle Compliance Hub Ltd | Transport & logistics | 2026 |
| Drivers and Screws Limited | Transport & logistics | 2024 |
| Driving Finder 4 YOU Limited | Education | 2024 |
| Driving With ROB Ltd | Education | 2026 |
| Droke Associates Limited | Professional & scientific | 2012 |
| Drsi Medical Limited | Health & social care | 2024 |
| Drum Mead Residents Company Limited | Households | 1986 |
| Dryden Carpentry Limited | Construction | 2008 |
| Dryden Fire Limited | Construction | 2022 |
| Dryden Group Limited | Financial services | 2022 |
| Drylining Developments Ltd | Construction | 2024 |
| DS (Hampshire) Ltd | Transport & logistics | 2024 |
| DS Delivers Technology Right Ltd | Professional & scientific | 2025 |
| DS Transformations Limited | Financial services | 2025 |
| Ds-Auto Mobile Mechanic Ltd | Wholesale & retail | 2024 |
| DSC Nutrition Holdings Ltd | Manufacturing | 2025 |
| DSC Nutrition Ltd | Wholesale & retail | 2014 |
| Dscaped Ltd | Manufacturing | 2026 |
| Dsgm Ltd | Administrative & support | 2018 |
| DSJ Developments (Southern) Limited | Construction | 2019 |
| Dtec Electrical Ltd | Construction | 2012 |
| DTS Enterprise Limited | Hospitality | 2017 |
| DU360 Limited | Information & communication | 2007 |
| Dual Research and Consulting Limited | Information & communication | 2022 |
| Dual Rope Access and Inspection Ltd | Professional & scientific | 2023 |
| Duber Ltd | Information & communication | 2023 |
| Duck’S Carpentry Ltd | Manufacturing | 2025 |
| Duncan Urquhart Limited | Construction | 2026 |
| Dunspur Holdings Limited | Administrative & support | 2004 |
| Durawind Ltd | Professional & scientific | 2020 |
| Duttsonrocks Ltd | Wholesale & retail | 2012 |
| DW Motors Limited | Wholesale & retail | 2025 |
| DWI Film Limited | Information & communication | 2024 |
| Dynamic Enterprises Limited | Education | 2020 |
| Dynamic GAS Solutions Ltd | Other services | 2013 |
| Dynamic Wrestling Limited | Administrative & support | 2009 |
| Dyplex Sports Ltd | Arts & recreation | 2025 |
| E & a Property Maintenance Ltd | Extraterritorial | 2015 |
| E & B Bathroom Studio (Horley) Limited | Construction | 2012 |
| E a Knight Limited | Professional & scientific | 2024 |
| E B Sandy Hair Ltd | Other services | 2025 |
| E C Knowles Limited | Other services | 2026 |
| E G R Interiors Limited | Construction | 2021 |
| E Gasu Service Ltd | Health & social care | 2023 |
| E M Operator Services Limited | Construction | 2017 |
| E O Properties Limited | Real estate | 2007 |
| E Shaw Housing Limited | Real estate | 2021 |
| E Side Estates Ltd | Real estate | 2026 |
| E Side Projects Ltd | Real estate | 2025 |
| E Side Real Estate Ltd | Real estate | 2024 |
| E&G Business Management Ltd | Hospitality | 2026 |
| E-Toilet Services Limited | Administrative & support | 2010 |
| E-Volve Construction Group Ltd | Construction | 2017 |
| E-Volve Investments Group Limited | Financial services | 2026 |
| E.C. Cole Limited | Construction | 1965 |
| E2 Services Limited | Administrative & support | 2005 |
| EAR Music Limited | Professional & scientific | 2025 |
| Earle Brothers Motorcycles Limited | Wholesale & retail | 2013 |
| Earlee Logistics Ltd | Transport & logistics | 2022 |
| Earley Connections Ltd | Construction | 2025 |