| Digital Realm UK Ltd | Other services | 2023 |
| Digital Sheep Ltd | Information & communication | 2012 |
| Digital Vehicle Solutions Limited | Administrative & support | 2017 |
| Digitrek Limited | Information & communication | 2007 |
| DIL Construction Limited | Construction | 2015 |
| Dilaver Limited | Real estate | 2024 |
| Dilli Raja's Fast Food Limited | Hospitality | 2017 |
| Dime Consortium Ltd | Hospitality | 2018 |
| Dimec Consulting Limited | Professional & scientific | 2018 |
| DIN Assets Ltd | Real estate | 2025 |
| Dina Proj-X Ltd | Professional & scientific | 2008 |
| Ding Fung Group Private Limited | Wholesale & retail | 2025 |
| Dingle Road Management Co. Ltd | Other services | 1995 |
| Dipism Ltd | Education | 2024 |
| Direct Group Yorkshire Ltd | Administrative & support | 2005 |
| Direct Motorbike Parts Ltd | Wholesale & retail | 2023 |
| Direct MX Group Limited | Wholesale & retail | 2024 |
| Direct Online Sales Ltd | Wholesale & retail | 2024 |
| Direct Pest Control Limited | Extraterritorial | 2010 |
| Direct Press Limited | Manufacturing | 2020 |
| Direct Resilience Training Solutions Limited | Education | 2026 |
| Direct Sports Coaching Ltd | Education | 2022 |
| Direct Store TV Limited | Wholesale & retail | 2015 |
| Direct Voice and Data Ltd | Information & communication | 2009 |
| Directing Life Consultancy Ltd | Professional & scientific | 2025 |
| Disastercom UK Ltd | Information & communication | 2007 |
| Discount Heating and Bathrooms Ltd | Wholesale & retail | 2021 |
| Discount Point Ltd | Wholesale & retail | 2020 |
| Discovery Trade Ltd | Wholesale & retail | 2024 |
| Display Maintenance Limited | Manufacturing | 1963 |
| Display Manufacturers Ltd | Manufacturing | 2012 |
| Display Projects Limited | Manufacturing | 2013 |
| DISTILL8 Limited | Manufacturing | 2009 |
| Distinct Disposables Limited | Wholesale & retail | 1988 |
| Distribution HF Limited | Transport & logistics | 2019 |
| Distribution Jointing Services Ltd | Energy | 2022 |
| Divergent Letting Agents Ltd | Real estate | 2024 |
| Diverse Accommodation Services Ltd | Hospitality | 2023 |
| Diverse Admin Management Ltd | Professional & scientific | 2025 |
| Diverse Lettings Limited | Real estate | 2008 |
| Diverse Pharma Ltd | Health & social care | 2023 |
| Diverse Property Solutions Ltd | Administrative & support | 2017 |
| Diverse Sites Limited | Hospitality | 2012 |
| Divide and Conquer Limited | Public administration | 2025 |
| Divinewealth Limited | Health & social care | 2013 |
| Dixon Contracting Services Limited | Professional & scientific | 2014 |
| Dixons Milk Ices (Holdings) Limited | Financial services | 2024 |
| Dixons Milk Ices Limited | Manufacturing | 2011 |
| Dixy Chicken Original Ltd | Hospitality | 2025 |
| Dixy Pizza Dalton Limited | Hospitality | 2025 |
| DIY Phone Covers Ltd | Other services | 2026 |
| DJ Dylz Ltd | Arts & recreation | 2025 |
| DJ Home Improvements Ltd | Construction | 2026 |
| DJ International Services Limited | Information & communication | 2023 |
| DJ Q Entertainment Limited | Administrative & support | 2024 |
| DJ Q Music Limited | Arts & recreation | 2017 |
| DJB Electrical Ltd | Construction | 2020 |
| DJB Metrology Solutions Ltd | Professional & scientific | 2019 |
| DJD Developments Yorkshire Limited | Real estate | 2024 |
| DJD Plumbing Limited | Construction | 2017 |
| DJH Huddersfield Limited | Administrative & support | 2008 |
| DJT Poultry Management Limited | Administrative & support | 2021 |
| DKL Mechanical Limited | Wholesale & retail | 2017 |
| DKV Construction Ltd | Construction | 2018 |
| DL Building Consultants Ltd | Construction | 2017 |
| DL Detailing Limited | Construction | 2007 |
| DL Green Energy Ltd | Energy | 2012 |
| DL Jointing Limited | Construction | 2012 |
| Dlcp Trading Ltd | Hospitality | 2023 |
| DLD Developments Ltd | Construction | 2025 |
| DLM Veterinary Services Limited | Financial services | 2022 |
| DLS Electrical Services North East Ltd | Construction | 2017 |
| DM Facilitator Ltd | Education | 2026 |
| DM Manufacturing Limited | Administrative & support | 2014 |
| DM Web Ltd | Information & communication | 2021 |
| DMA Communications Ltd | Professional & scientific | 2023 |
| DMA Design Management Ltd | Professional & scientific | 2010 |
| DMC Broadcast Services Limited | Information & communication | 2022 |
| DMC Global Limited | Administrative & support | 2018 |
| DMD Services Limited | Administrative & support | 2003 |
| DMH Law Limited | Professional & scientific | 2024 |
| DMH Podiatry and Chiropody Ltd | Health & social care | 2019 |
| DMH Solutions Limited | Information & communication | 2000 |
| DMI Yorkshire Ltd | Construction | 2020 |
| Dmlaycock Consulting Ltd | Professional & scientific | 2017 |
| DMN Holdings Ltd | Extraterritorial | 2003 |
| DMN Project Build Limited | Construction | 2020 |
| Dmtqaa Ltd | Professional & scientific | 2024 |
| DMW8 Ltd | Hospitality | 2024 |
| DN2TEA Limited | Financial services | 2025 |
| DNA Care National Ltd | Health & social care | 2019 |
| DNA Recruitment Solutions Limited | Administrative & support | 2022 |
| DNL Sealants Ltd | Construction | 2021 |
| DNS Financial Solutions Ltd | Financial services | 2018 |
| DNS Taverns Limited | Hospitality | 2026 |
| Doci Enterprise Ltd | Wholesale & retail | 2023 |
| Doctor Shutt Ltd | Health & social care | 2020 |
| Doctors Handover Ltd | Information & communication | 2025 |
| Dodgeball Development Limited | Arts & recreation | 2017 |
| Dodson Construction Ltd | Construction | 2022 |