| Discount Suite Centre Limited | Wholesale & retail | 2010 |
| Discountvapesuk Ltd | Wholesale & retail | 2026 |
| Distex Ltd | Wholesale & retail | 2013 |
| Distillery Box Events Ltd | Hospitality | 2023 |
| Distributed Energy Connections Limited | Professional & scientific | 2019 |
| Ditya Premier Ltd | Wholesale & retail | 2026 |
| Diversify NOW CIC | Education | 2019 |
| Divine Build Solutions Ltd | Construction | 2021 |
| Divinity Projects Limited | Wholesale & retail | 2016 |
| Division Bell Limited | Construction | 2004 |
| Divvys Group Limited | Manufacturing | 2026 |
| Dixon Crane Hire Limited | Construction | 2025 |
| Dixon Nuclear Services Ltd | Professional & scientific | 2026 |
| Dixons Village Store Limited | Wholesale & retail | 2015 |
| DIY Kitchen Makeovers Ltd | Manufacturing | 2021 |
| DIY Zone Ltd | Wholesale & retail | 2024 |
| DJ & TD Investments Ltd | Real estate | 2023 |
| DJ Leisure Group Ltd | Arts & recreation | 2026 |
| DJ Worksurfaces Ltd | Wholesale & retail | 2020 |
| DJB Couriers Ltd | Transport & logistics | 2018 |
| DJB Roofing and Cladding Ltd | Construction | 2017 |
| DJJ Consulting & Tsco Services Ltd | Construction | 2020 |
| DJL Resources Limited | Mining & quarrying | 2017 |
| DJL Sprayforce Painters & Decorators Ltd | Construction | 2011 |
| DJS Lukasz Ltd | Health & social care | 2019 |
| DJS Management Limited | Hospitality | 2025 |
| DJS Property Services Ltd | Real estate | 2020 |
| DK Tank Installations Limited | Construction | 2017 |
| DK Traffic Ltd | Other services | 2022 |
| DKL Consulting Limited | Information & communication | 2018 |
| DKS Communications Limited | Information & communication | 2024 |
| DKS Property Services Ltd | Real estate | 2021 |
| DLA Services Ltd | Professional & scientific | 2017 |
| DLC Developments Ltd | Real estate | 2021 |
| DLC Electrical Solutions Ltd | Construction | 2025 |
| DLC Procurement Ltd | Other services | 2021 |
| DLF Plumbing & Heating Ltd | Construction | 2014 |
| Dljholmes Ltd | Professional & scientific | 2024 |
| DLK Parapets Ltd | Manufacturing | 2019 |
| DLM Management Services Limited | Professional & scientific | 2026 |
| DLM Property Investment Limited | Real estate | 2018 |
| DLS Mortgage and Protection Ltd | Wholesale & retail | 2024 |
| DLU Joinery Limited | Construction | 2012 |
| DM AI Management Ltd | Professional & scientific | 2023 |
| DM Home Improvements Ltd | Real estate | 2025 |
| DM Houses Limited | Real estate | 2020 |
| DM Small Transport Ltd | Transport & logistics | 2014 |
| DMA Accommodation Ltd | Real estate | 2024 |
| DMB Crew Limited | Administrative & support | 2013 |
| Dmdc Properties Ltd | Real estate | 2024 |
| DMH New Horizons Ltd | Health & social care | 2011 |
| Dmlr Ltd | Wholesale & retail | 2026 |
| DMM Plumbing & Heating Ltd | Construction | 2023 |
| DMM Trading Cards Ltd | Wholesale & retail | 2025 |
| DMN Safe Rail Planning Ltd | Administrative & support | 2020 |
| DMT Roofing and Plastics Ltd | Construction | 2024 |
| DN Estates Management Limited | Real estate | 2022 |
| DNA Accountancy Solutions Ltd | Professional & scientific | 2024 |
| DNA Property & Rentals Ltd | Real estate | 2023 |
| DNA Rope Access Ltd | Construction | 2024 |
| DNL Plumbing & Heating Limited | Construction | 2017 |
| DNR Plasterers Ltd | Construction | 2013 |
| DNS Electrical Ltd | Construction | 2011 |
| DO IT at Home Ltd | Wholesale & retail | 2020 |
| Doaney's Drywall Limited | Construction | 2024 |
| Dobson Flooring Services Limited | Construction | 2017 |
| DOD Site Management Services Limited | Construction | 2026 |
| Doggy Day Academy Ltd | Hospitality | 2025 |
| Dogsville Daycare Ltd | Other services | 2023 |
| Dojo Academy Ltd | Arts & recreation | 2023 |
| Dollhouse Mobile Aesthetics Ltd | Other services | 2024 |
| Dollys Wool Ltd | Wholesale & retail | 2013 |
| Dollywood Cosmetic Academy Ltd | Other services | 2020 |
| Domsmedia Limited | Professional & scientific | 2020 |
| Domus Rentalis Ltd | Real estate | 2025 |
| DON Despatch Couriers Ltd. | Transport & logistics | 2008 |
| Doncaster Bioresonance and Alternative Therapies Limited | Extraterritorial | 2022 |
| Doncaster CAM6O Limited | Education | 2019 |
| Doncaster Gate Limited | Real estate | 2011 |
| Doncaster Jazz Alumni Ltd | Arts & recreation | 2023 |
| Doncaster Membrane Installations Limited | Construction | 1998 |
| Done Right Developments Limited | Construction | 2004 |
| Dong Fang Maltby Limited | Hospitality | 2020 |
| Dongate Holdings Ltd | Administrative & support | 2015 |
| Donkey Ninja Ltd | Information & communication | 2015 |
| Dooneys Limited | Other services | 2012 |
| Doran & Whales Properties Ltd | Real estate | 2023 |
| Doris (LCD) Limited | Professional & scientific | 2025 |
| Dorlin Holdings Limited | Real estate | 2025 |
| Dotties Haulage Ltd | Transport & logistics | 2022 |
| Double a Living Ltd | Real estate | 2024 |
| Double Trouble Delights Limited | Wholesale & retail | 2024 |
| Douglas Paul Limited | Extraterritorial | 1999 |
| Dove Analytics Ltd | Professional & scientific | 2020 |
| Dove and Bear Ltd | Administrative & support | 2021 |
| Dovecote Solutions Limited | Professional & scientific | 2019 |
| Dowgate Trading (UK) Ltd. | Wholesale & retail | 1998 |
| Down and OUT Bar Limited | Hospitality | 2025 |
| Doyle Huntington Developments Ltd | Real estate | 2022 |
| DPK Consulting Ltd | Information & communication | 2025 |