| Discount Clearance Company Limited | Wholesale & retail | 2020 |
| Discount in Limited | Wholesale & retail | 2016 |
| Discount Leisure Store Ltd | Wholesale & retail | 2018 |
| Discovermed Services Limited | Health & social care | 2003 |
| Discovery Group Ltd | Real estate | 2019 |
| Displace Yourself Theatre | Arts & recreation | 2017 |
| Dispomedical UK Ltd | Wholesale & retail | 2010 |
| Disposable Dropzzz 515 Ltd | Wholesale & retail | 2024 |
| Disruptive Dosing Limited | Professional & scientific | 2012 |
| Disruptive Innovation Limited | Professional & scientific | 2011 |
| Disruptive Marketing Limited | Professional & scientific | 2012 |
| Disruptive Printing Limited | Administrative & support | 2013 |
| Disruptive Technology Limited | Extraterritorial | 2012 |
| Dissectoview Limited | Professional & scientific | 2015 |
| Distinct Wholesale Supplies Ltd | Wholesale & retail | 2024 |
| District Desserts Bradford Ltd | Hospitality | 2026 |
| Distrivita Ltd | Information & communication | 2021 |
| Ditt Hjem Ltd | Real estate | 2018 |
| Ditta Cooperations Ltd | Extraterritorial | 2024 |
| Ditta Solution Limited | Professional & scientific | 2019 |
| Diva Management Services Ltd | Administrative & support | 2018 |
| Divas Beauty Saloon Ltd | Other services | 2022 |
| Diverse School of Motoring Ltd | Education | 2024 |
| Diverse Swiss Ltd | Construction | 2025 |
| Divine Barbers Ltd | Other services | 2020 |
| Divine Comforting Ltd | Real estate | 2026 |
| Divine Fashion Ltd | Wholesale & retail | 2018 |
| Divine Gesture Limited | Transport & logistics | 2002 |
| Divine Giftware Limited | Wholesale & retail | 2013 |
| Divineyard Ltd | Health & social care | 2015 |
| Divkid Limited | Information & communication | 2022 |
| Divya Enterprises Limited | Wholesale & retail | 2016 |
| Dixon Electrical Solutions Ltd | Construction | 2022 |
| Dixons Academies Trust | Education | 1988 |
| Dixons Icecream Limited | Wholesale & retail | 2025 |
| DIY Builders & Timber Merchants Ltd | Wholesale & retail | 2024 |
| DIY Dudes Ltd | Wholesale & retail | 2024 |
| DIY Master Limited | Wholesale & retail | 2010 |
| DIY Properties Ltd | Households | 2023 |
| DIY Worktops Limited | Manufacturing | 2022 |
| DJ Courier Services Ltd | Transport & logistics | 2026 |
| DJ Remmy Entertainment Limited | Administrative & support | 2025 |
| DJ Surprise Ltd | Arts & recreation | 2022 |
| DJD Properties Ltd | Real estate | 2026 |
| DJP Business Solutions Limited | Information & communication | 2026 |
| DJS Healthcare Private Limited | Administrative & support | 2017 |
| DK Bloom Trading Ltd | Wholesale & retail | 2024 |
| DK Professional Services (York) Limited | Administrative & support | 2020 |
| DK Renovatus Limited | Wholesale & retail | 2026 |
| DKA Roofing and Construction Ltd | Construction | 2026 |
| DKB Financial Services Limited | Financial services | 2010 |
| Dkenterprise Limited | Wholesale & retail | 2023 |
| DKH Leisure Ltd | Hospitality | 2024 |
| DKM Supplies Ltd | Wholesale & retail | 2025 |
| Dkuk Ltd | Information & communication | 2018 |
| DLS4 Ltd | Transport & logistics | 2025 |
| Dlwilliamson Ltd | Hospitality | 2022 |
| DLX Lifestyle Group Ltd | Wholesale & retail | 2026 |
| DM Builders Ltd | Construction | 2015 |
| DM Decorating & Maintenance Ltd | Construction | 2016 |
| DM Roofline Limited | Construction | 2024 |
| Dmas Trade Ltd | Wholesale & retail | 2023 |
| Dmax Courier Limited | Transport & logistics | 2022 |
| DMB Financial Services (UK) Limited | Financial services | 2019 |
| DMD by DR Murtaza Ltd | Health & social care | 2023 |
| DMF Technical Solutions Ltd | Construction | 2023 |
| DMG Hair Ltd | Other services | 2024 |
| DMH Air Conditioning Ltd | Energy | 2022 |
| DMH Driveways & Groundworks Ltd | Administrative & support | 2026 |
| DMH Electrical Engineering Ltd | Professional & scientific | 2024 |
| Dmhk Limited | Manufacturing | 2018 |
| DMR 1 Limited | Transport & logistics | 2026 |
| DMS Tech Limited | Information & communication | 2016 |
| DMW Investments Ltd | Real estate | 2025 |
| DN Ackee Ltd | Transport & logistics | 2023 |
| DN Lemon Ltd | Hospitality | 2025 |
| DN Plumbing and Heating Ltd | Construction | 2019 |
| DNA Home Improvements North East Ltd | Construction | 2013 |
| DND Plus Limited | Hospitality | 2018 |
| Dnim Holdings Ltd | Financial services | 2026 |
| DNK9 Security Ltd | Administrative & support | 2023 |
| DNS Ventures Limited | Financial services | 2023 |
| DNS3H-NEXUS Ltd | Wholesale & retail | 2025 |
| DO IT 4U Ltd | Construction | 2019 |
| DO IT Yourself (Bradford) Ltd | Wholesale & retail | 2012 |
| Dobre Polskie Bradford Ltd | Wholesale & retail | 2022 |
| Dobsons of Windhill Limited | Other services | 1974 |
| DOC Holdings Ltd | Wholesale & retail | 2020 |
| Docdilly 1 Limited | Real estate | 2025 |
| Docdilly Limited | Financial services | 2023 |
| Dockays Ltd | Hospitality | 2025 |
| Docs Autos Ltd | Wholesale & retail | 2021 |
| Doctors on the Go Ltd | Health & social care | 2022 |
| Doctors Panel Limited | Professional & scientific | 2009 |
| Dodd (Holdings) Limited | Professional & scientific | 2003 |
| Dodd Engineering Limited | Manufacturing | 1987 |
| Dodd Modular Limited | Manufacturing | 2017 |
| Dodo's Grill Ltd | Hospitality | 2025 |
| Dog & Partridge (Friargate) Limited | Hospitality | 2021 |
| Dogar Motors UK Ltd | Wholesale & retail | 2025 |