| DEV Krushna Limited | Manufacturing | 2025 |
| Devakived Ltd | Information & communication | 2021 |
| DFC Trans Limited | Transport & logistics | 2022 |
| DG Civil Engineering Consultants Ltd | Construction | 2019 |
| DG101 Ltd | Information & communication | 2025 |
| DG7 Limited | Real estate | 2011 |
| Dglonet Limited | Information & communication | 2020 |
| Dhillonix Shopefronts and Shutters Ltd | Manufacturing | 2026 |
| Diamond Food and Wine Limited | Wholesale & retail | 2012 |
| Diamond Glaziers (Essex) Limited | Administrative & support | 2024 |
| Diamond Security &General Services Ltd | Administrative & support | 2019 |
| Dice-Rom Highway Maintenance Ltd | Construction | 2023 |
| Didah’S Couture Limited | Manufacturing | 2025 |
| Digimexi Coding Limited | Information & communication | 2025 |
| Digital Perception Ltd | Information & communication | 2024 |
| Digitree Ltd | Professional & scientific | 2022 |
| Dignity Resources Limited | Wholesale & retail | 2019 |
| Ding Tian Limited | Hospitality | 2023 |
| Dino Enterprise Limited | Information & communication | 2018 |
| Dips Food and Drinks Ltd | Wholesale & retail | 2025 |
| Dipsims Ltd | Information & communication | 2024 |
| Direct Cladding Limited | Construction | 2006 |
| Direct Current Ltd | Construction | 2019 |
| Direct Handyman Ltd | Administrative & support | 2017 |
| Discover Best Ltd | Wholesale & retail | 2023 |
| Discovery Stars Ltd | Real estate | 2018 |
| Disney Parks Designs Limited | Administrative & support | 2010 |
| District Investments Ltd | Real estate | 2019 |
| Divine Destiny Healthcare Services Limited | Administrative & support | 2017 |
| Divine Facility Services Limited | Administrative & support | 2014 |
| Divine Grace Care Services Limited | Health & social care | 2020 |
| Divinerise Consultancy Limited | Professional & scientific | 2022 |
| Djassi Cleaning Service Limited | Administrative & support | 2025 |
| DJY Services Limited | Real estate | 2018 |
| DK Building Controls Ltd | Construction | 2023 |
| DMF Europe Ltd | Construction | 2025 |
| DMS Testing Limited | Construction | 2003 |
| DNA Housing Services Ltd | Real estate | 2021 |
| DO for Love Ltd | Information & communication | 2024 |
| Doceo Development CIC | Education | 2020 |
| Domani Ventilation Services Limited | Construction | 2015 |
| Dominion Healthcareuk Limited | Administrative & support | 2023 |
| Domo Pharma Limited | Wholesale & retail | 2023 |
| Donart Contractors Ltd | Construction | 2024 |
| Donation House Ltd | Professional & scientific | 2023 |
| Doorey Building & Maintenance Contractors Ltd | Construction | 2024 |
| Doorway to Belonging Ltd | Public administration | 2022 |
| Doowe Connect Ltd | Construction | 2025 |
| Dorclose Limited | Wholesale & retail | 2004 |
| DOS Santos Improvements Ltd | Construction | 2025 |
| Doubled Solutions Ltd | Construction | 2023 |
| Dover Hamilton Limited | Professional & scientific | 2020 |
| Downwind Aviation Services Ltd | Transport & logistics | 2024 |
| Doyle & Black Services Limited | Construction | 2022 |
| Dozek Properties Limited | Real estate | 2024 |
| DPS Safeguarding Consultancy Ltd | Professional & scientific | 2024 |
| DR Chef Ltd | Hospitality | 2025 |
| DR Khush Ltd | Health & social care | 2024 |
| Dravin Trans Inc Limited | Transport & logistics | 2025 |
| Dray Consult Ltd | Construction | 2023 |
| DRC Property Maintenance Ltd | Construction | 2026 |
| Dreamhouse Relocations Ltd | Construction | 2023 |
| Dreamland Enclave Ltd | Real estate | 2024 |
| Droughtbuster Limited | | 1992 |
| Drss Properties Ltd | Real estate | 2025 |
| Druworks Ltd | Information & communication | 2023 |
| DS Services (Midland) Ltd | Education | 2023 |
| DT6262 Ltd | Professional & scientific | 2026 |
| Dtech-Comprolinksystems Ltd | Information & communication | 2015 |
| DUA Constructions Ltd | Construction | 2012 |
| DUA Properties Ltd | Real estate | 2021 |
| Dubai Real Estate Ltd | Real estate | 2021 |
| Duna Care Ltd | Hospitality | 2025 |
| Durable Properties Limited | Real estate | 2021 |
| Dutiful Care Ltd | Health & social care | 2024 |
| DV Dryliners Ltd | Construction | 2021 |
| Dycroft Ventures Ltd | Administrative & support | 2023 |
| Dylab Limited | Health & social care | 2018 |
| Dynamic Assets Investment Ltd | Real estate | 2024 |
| Dynamic Care and FM Solutions Ltd | Administrative & support | 2014 |
| Dynamiq Construct Ltd | Construction | 2025 |
| Dynamite Property Holdings Limited | Real estate | 2020 |
| E & G Carpentry and Joinery Limited | Manufacturing | 2024 |
| E C 5 Haulage Ltd | Transport & logistics | 2022 |
| E K L Properties Limited | Real estate | 2020 |
| E-Electrical Solutions Ltd | Energy | 2023 |
| E.E.M Evans Electrical and Maintenance Limited | Construction | 2024 |
| E.L.A. Transport Ltd | Transport & logistics | 2026 |
| Eagle Cargo Services Limited | Transport & logistics | 1998 |
| Eagle Group of Companies Ltd | Financial services | 2022 |
| Eagle Investment Europe Ltd | Real estate | 2016 |
| Eagle Support CIC | Real estate | 2024 |
| Eagle Support Services Ltd | Health & social care | 2016 |
| East & Nord Holdings Ltd | Financial services | 2025 |
| East & Nord LLP | | 2014 |
| Eastfreights Logistics Limited | Transport & logistics | 2020 |
| Eastside Couriers Ltd | Transport & logistics | 2025 |
| Easy Admin Solutions Ltd | Administrative & support | 2021 |
| Easy Certs Ltd | Real estate | 2020 |
| Easy League Limited | Wholesale & retail | 2024 |