| Distribution & Developments Ltd | Other services | 2019 |
| District Finance Ltd | Real estate | 2023 |
| Diva Nail Halifax Ltd | Other services | 2024 |
| Diversity Education Limited | Professional & scientific | 2017 |
| Diversity Products Ltd | Manufacturing | 2011 |
| Divine World Ltd | Wholesale & retail | 2025 |
| DJ Geraghty Construction & Maintenance Ltd | Construction | 2022 |
| DJ. Deisaim Ltd | Transport & logistics | 2024 |
| DJB Jeans Limited | Wholesale & retail | 2016 |
| DJC Bars Limited | Hospitality | 2024 |
| DJG Barbers Limited | Other services | 2022 |
| DJH Plant Services Limited | Manufacturing | 2013 |
| Djjordz Ltd | Arts & recreation | 2024 |
| DJK Estates & Lettings Ltd | Real estate | 2026 |
| DJS Investments (Brighouse) Limited | Real estate | 2013 |
| DK Hospitality Limited | Hospitality | 2018 |
| DK Lettings Limited | Real estate | 2023 |
| DK Sales & Consultancy Ltd | Other services | 2019 |
| DL Changes Ltd | Public administration | 2025 |
| DL Partnership (AD) Limited | Professional & scientific | 2010 |
| DL Partnership (UK) Limited | Professional & scientific | 2014 |
| DLC Family Investments Limited | Professional & scientific | 2023 |
| DLC1 Ltd | Health & social care | 2023 |
| DLD Halifax Limited | Hospitality | 2022 |
| DLE Construction Limited | Construction | 2005 |
| DLG Property Yorkshire Ltd | Real estate | 2022 |
| Dltt Limited | Professional & scientific | 2024 |
| DMA Agency Ltd | Professional & scientific | 2025 |
| DMG Education Ltd | Administrative & support | 2016 |
| DMG Homes Ltd | Real estate | 2025 |
| DNA Financial Solutions Limited | Financial services | 2017 |
| DNA Golf Limited | Wholesale & retail | 2014 |
| DNA Protect Limited | Financial services | 2021 |
| Dnafs Group Limited | Financial services | 2026 |
| DNB Transport Limited | Transport & logistics | 2005 |
| Doctor Drape Ltd | Manufacturing | 2022 |
| Doctor MK Healthcare Ltd | Health & social care | 2023 |
| Doctor Nature Ltd | Health & social care | 2023 |
| Doctors Aarthi & Karthik Ltd | Health & social care | 2025 |
| Doherty Medical Limited | Extraterritorial | 1989 |
| Dolce Blinds Ltd | Construction | 2025 |
| Dolly PEG Boutique Limited | Wholesale & retail | 2024 |
| Dolus Security UK Ltd | Professional & scientific | 2023 |
| Domestic Angel Services Limited | Administrative & support | 2016 |
| Domestic Cleaning Company (NW) Ltd | Administrative & support | 2013 |
| Domvest Limited | Real estate | 2024 |
| Donaldson Watt Ltd | Wholesale & retail | 2024 |
| Donna's Daycare Limited | Health & social care | 2011 |
| Donny Transport Limited | Transport & logistics | 2021 |
| Doodson Electrical Limited | Energy | 2017 |
| Doors Galore & More Ltd | Wholesale & retail | 2023 |
| Doozie Media Limited | Manufacturing | 2019 |
| Dopson Marketing Ltd | Professional & scientific | 2019 |
| Doraemi Designs Limited | Professional & scientific | 2025 |
| Dorica Limited | Real estate | 2000 |
| Dorin Moise Ltd | Transport & logistics | 2022 |
| Dorman Bond Ltd | Information & communication | 2023 |
| DOT Jewellery Limited | Wholesale & retail | 2003 |
| DOT to DOT Therapy Ltd | Health & social care | 2018 |
| Double Dipper Paint Strippers and Joinery Services Ltd | Construction | 2023 |
| Douglas Transport (Yorkshire) Limited | Real estate | 1983 |
| Down 2 Earth Spiritual Services Ltd | Wholesale & retail | 2014 |
| Downtown Burger Halifax Ltd | Hospitality | 2025 |
| Dowson Property Limited | Real estate | 2023 |
| Dowson Sourcing Limited | Administrative & support | 2024 |
| DOY Shelf Ltd | Hospitality | 2025 |
| DPC Property Solutions Ltd | Construction | 2018 |
| DPI Direct Limited | Transport & logistics | 2016 |
| Dpkat Holdings Ltd | Real estate | 2019 |
| Dprob Holdings Ltd | Real estate | 2024 |
| DPU Hardware Limited | Extraterritorial | 2008 |
| DR Alisha Aesthetics Limited | Other services | 2024 |
| DR and RD Services Ltd | Health & social care | 2023 |
| DR Bespoke Ltd | Manufacturing | 2023 |
| DR David Smith Financial Services Ltd | Financial services | 2025 |
| DR Ghee Ltd | Manufacturing | 2025 |
| DR H Ikram GP Ltd | Health & social care | 2023 |
| DR K Papis Psychologist Ltd | Health & social care | 2022 |
| DR Mark Rastall Limited | Health & social care | 2016 |
| DR N Ahmed Ltd | Health & social care | 2017 |
| DR S. K. Seraj Ltd | Health & social care | 2019 |
| DR Sheikh Locum Ltd | Health & social care | 2020 |
| DR TEO Ltd | Health & social care | 2023 |
| DR William Okanga Ajwang .Okamed Services Limited | Health & social care | 2014 |
| DR. S Z Chishti Ltd | Health & social care | 2024 |
| Dragonfly Engineering Limited | Extraterritorial | 2008 |
| Dransfield Roofing West Yorkshire Limited | Construction | 2002 |
| Draw, Plan & Resolve Ltd | Professional & scientific | 2023 |
| DRC Joinery & Shopfitting Ltd | Construction | 2026 |
| Drcf Associates Limited | Education | 2019 |
| Dream Body Pilates Ltd | Arts & recreation | 2025 |
| Dream IT Design Limited | Professional & scientific | 2010 |
| Dreamland Security Limited | Administrative & support | 2023 |
| Dreams Trader Limited | Wholesale & retail | 2025 |
| Dressy Jessie Limited | Other services | 2015 |
| Drew Harper Financial Consultants Limited | Professional & scientific | 2011 |
| Drew Properties Ltd | Construction | 2020 |
| Drive Devilbiss Healthcare Limited | Wholesale & retail | 2001 |
| Drive Devilbiss Sidhil Limited | Manufacturing | 1951 |
| Driveline Transport Ltd | Transport & logistics | 2025 |