| Davisue Properties Limited | Real estate | 2015 |
| Dawsec Associates Ltd | Administrative & support | 2023 |
| Dbukowski Ltd | Administrative & support | 2022 |
| DC Marketing Group Ltd | Professional & scientific | 2017 |
| Dcmgt Ltd | Financial services | 2018 |
| DCS Rigging and Lifting Services Ltd | Construction | 2024 |
| DD Truck Ltd | Transport & logistics | 2018 |
| DD1 Barber Limited | Other services | 2026 |
| Dean Toplis Installations Ltd | Other services | 2014 |
| Decebal Limited | Wholesale & retail | 2015 |
| Decision Economics (UK), Inc. | | 2005 |
| Deepdark Designs Ltd | Information & communication | 2015 |
| Deguara Living Ltd | Real estate | 2026 |
| Deima Services Limited | Transport & logistics | 2023 |
| Dellhaven Homes Limited | Real estate | 2004 |
| Delt Future Limited | Real estate | 2015 |
| Delta Storage Limited | Administrative & support | 2022 |
| Demhat Limited | Hospitality | 2024 |
| Dems Haulage Ltd | Transport & logistics | 2025 |
| DEN & DAS Ltd | Transport & logistics | 2026 |
| DEN Mann Ltd | Wholesale & retail | 2015 |
| Denis Benicio Ltd | Hospitality | 2018 |
| DEO Capstone Limited | Health & social care | 2025 |
| Depco Pubs Ltd | Hospitality | 2025 |
| Derek LEE Gunsmiths Limited | Wholesale & retail | 2001 |
| Dermuv Ltd | Transport & logistics | 2023 |
| Derry's Destinations Ltd | Administrative & support | 2025 |
| Desco Power and Energy Solutions Limited | Professional & scientific | 2025 |
| Destiny White Clinic Ltd | Health & social care | 2023 |
| Detective Elite Prime Ltd | Information & communication | 2021 |
| Deus Bonus EST Medical Service Limited | Health & social care | 2025 |
| Devlinc Limited | Wholesale & retail | 1983 |
| Dhcw Ltd | Administrative & support | 2022 |
| Dheeran Retail Ltd | Wholesale & retail | 2025 |
| DHF Group Limited | Wholesale & retail | 2026 |
| DIA Haulage Ltd | Transport & logistics | 2014 |
| Diamond GAN Technologies Ltd | Professional & scientific | 2025 |
| Diamond Playgrounds Ltd | Construction | 2014 |
| Diamond Sibsey Limited | Households | 2021 |
| Diana and Sarunas Limited | Transport & logistics | 2018 |
| Dickis Trans Ltd | Transport & logistics | 2014 |
| Dilshad Investments Ltd | Real estate | 2025 |
| Dimaz Ltd | Transport & logistics | 2021 |
| Dinatransport Limited | Transport & logistics | 2026 |
| Direct Order Blinds (Online) Ltd | Wholesale & retail | 2019 |
| Discovery Sports Coaching Limited | Education | 2023 |
| Diversity Training and Information Limited | Education | 2016 |
| Divida Ltd | Wholesale & retail | 2019 |
| Divin Ltd | Hospitality | 2025 |
| Diyar Deniz Limited | Wholesale & retail | 2018 |
| DJ Wolvaardt Limited | Health & social care | 2023 |
| DJM Transport Ltd | Transport & logistics | 2020 |
| DKP Trans Ltd | Transport & logistics | 2019 |
| DL Motor Group Limited | Wholesale & retail | 2024 |
| DLM Safety Services Ltd | Professional & scientific | 2020 |
| DMA Joinery Ltd | Construction | 2022 |
| DMD1807 Ltd | Construction | 2023 |
| Dmsz Properties Ltd | Real estate | 2026 |
| DN Trans 1989 Ltd | Transport & logistics | 2015 |
| Doctors Learn Limited | Education | 2025 |
| Dolphin Precision Engineering Limited | Manufacturing | 1992 |
| Doma Transport Limited | Transport & logistics | 2016 |
| Domingra Limited | Real estate | 2017 |
| Domuk Pizza Limited | Hospitality | 2019 |
| Donatas Trans Limited | Transport & logistics | 2018 |
| Dondocus Properties Limited | Real estate | 2026 |
| Donington Engineering Supplies Limited | Wholesale & retail | 2011 |
| Donington Housing Development Ltd | Agriculture & fishing | 2015 |
| Donnacomm Ltd | Wholesale & retail | 2018 |
| Donohue Property Developments Limited | Construction | 2012 |
| Dorrington Hair Ltd | Other services | 2018 |
| Dosky Ltd | Transport & logistics | 2025 |
| Dovecote Production Services Limited | Arts & recreation | 2016 |
| DP Export Limited | Wholesale & retail | 2025 |
| DP Lightning Tech Limited | Construction | 2025 |
| DP Property Rentals Ltd | Real estate | 2022 |
| Dpmckeegan Ltd | Manufacturing | 2023 |
| Dpvp Limited | Real estate | 2022 |
| DR. Torres Advanced Aesthetics / Arellano Torres Ltd | Health & social care | 2025 |
| Dreamline Taxis Ltd | Transport & logistics | 2026 |
| Dredi Ltd | Transport & logistics | 2020 |
| Dressénce Limited | Wholesale & retail | 2025 |
| DRG Logistics Limited | Extraterritorial | 2015 |
| Driver Mews Limited | Real estate | 2004 |
| DSS Recruitment Services Ltd | Administrative & support | 2023 |
| DSV 24 Limited | Professional & scientific | 2024 |
| Dswis Ltd | Construction | 2026 |
| DT Cellular & Rigging Services Ltd | Information & communication | 2019 |
| DTN Ltd | Administrative & support | 2025 |
| Duco Heating Ltd | Wholesale & retail | 2023 |
| Dunhams Butchers Ltd | Wholesale & retail | 2015 |
| Dupans Removals Ltd | Transport & logistics | 2025 |
| Durso Transport Ltd | Transport & logistics | 2025 |
| DUST4UCOMMERCIAL Ltd | Administrative & support | 2022 |
| Dutch Plants Direct Ltd | Wholesale & retail | 2012 |
| Dwaggel Ltd | Extraterritorial | 2019 |
| DWB Boston Ltd | Manufacturing | 2003 |
| Dwell-Geo Enterprise Limited | Manufacturing | 2025 |
| Dyako Barber Limited | Other services | 2026 |
| Dylan Baker Financial Consultancy Ltd | Financial services | 2024 |