| Dean Logistics Limited | Transport & logistics | 2020 |
| Dean Pharmaceutical Limited | Wholesale & retail | 2025 |
| Dean Rhodes Scaffolding Ltd | Construction | 2019 |
| Deanwood Court (Bradford) Management Company Limited | Households | 1988 |
| Decareer Builders Academy UK Ltd | Professional & scientific | 2026 |
| Deccom Limited | Construction | 2005 |
| Deck'D OUT Ltd | Wholesale & retail | 2025 |
| Declanshannon Ltd | Transport & logistics | 2026 |
| Deconsys Technology Limited | Manufacturing | 2001 |
| Decor Blinds Ltd | Manufacturing | 2025 |
| Decpharm Ltd | Health & social care | 2003 |
| Decrypt Ltd | Hospitality | 2024 |
| Dectamill Limited | Manufacturing | 1998 |
| Dedicated Fundraising Ltd | Other services | 2025 |
| DEE (Northern) Limited | Hospitality | 2013 |
| DEE Grocers Ltd | Wholesale & retail | 2025 |
| DEE LUX 1 Limited | Wholesale & retail | 2024 |
| Deen Estates (Yorkshire) Limited | Hospitality | 2023 |
| Deen Manufacturing Company Limited | Real estate | 1991 |
| Deep Clean Xpert Ltd | Wholesale & retail | 2025 |
| Deep Cleaning Pros Ltd | Administrative & support | 2024 |
| Deep Cleans Manchester Ltd | Administrative & support | 2025 |
| Deep Same Day Freight Services Ltd | Transport & logistics | 2024 |
| Deepstuff Records Ltd | Information & communication | 2014 |
| Deeptech Solutions Ltd | Wholesale & retail | 2021 |
| Deeside Design and Detailing Limited | Professional & scientific | 2014 |
| Defib Service Group Ltd | Professional & scientific | 2025 |
| Defodeal Ltd | Wholesale & retail | 2024 |
| Degustar Ltd | Information & communication | 2013 |
| Deighton Manufacturing (UK) Limited | Administrative & support | 2000 |
| Deja VU Barbers Ltd | Other services | 2022 |
| Delf Hill Management Limited | Households | 2018 |
| Delgado Limited | Extraterritorial | 1904 |
| Deli 29 Fagley Ltd | Hospitality | 2018 |
| Deli 29 Ltd | Hospitality | 2018 |
| Deli 29 Parkside Ltd | Hospitality | 2018 |
| Deli Bite (UK) Ltd | Other services | 2014 |
| Deli Box Ltd | Hospitality | 2021 |
| Deli Deals Limited | Wholesale & retail | 2026 |
| Deli Fresh Halal Butchers Limited | Wholesale & retail | 2026 |
| Deli Fusion Limited | Hospitality | 2026 |
| Deli Intu Ltd | Hospitality | 2025 |
| Deli Munch Limited | Hospitality | 2023 |
| Deli Passion Ltd | Extraterritorial | 2024 |
| Deli Touch (Highfield) Ltd | Hospitality | 2022 |
| Deli's Star Ltd | Wholesale & retail | 2024 |
| Deli-Delights Limited | Hospitality | 2018 |
| Delicate Blooms Limited | Wholesale & retail | 2025 |
| Delicious Falafel Ltd | Hospitality | 2024 |
| Delicious Grill & Roti House Ltd | Hospitality | 2025 |
| Delicious Parmesan House Ltd | Hospitality | 2014 |
| Deliciously Yorkshire Catering Ltd | Hospitality | 2022 |
| Delico Ltd | Transport & logistics | 2025 |
| Delicol Ltd | Transport & logistics | 2020 |
| Delighted African Foods Ltd | Wholesale & retail | 2024 |
| Delights Cafe (Bradford) Ltd | Hospitality | 2024 |
| Delish Express Limited | Hospitality | 2023 |
| Delish Franchise Ltd | Hospitality | 2023 |
| Delishs Limited | Wholesale & retail | 2020 |
| Deliver Logistics Ltd | Transport & logistics | 2024 |
| Delivery Force Logistics Limited | Transport & logistics | 2024 |
| Delko Global Limited | Construction | 2023 |
| Della Rocca Wine & Food Limited | Hospitality | 2012 |
| Delph Hill Convenience Ltd | Wholesale & retail | 2014 |
| Delreign Ltd | Hospitality | 2022 |
| Delta Business Development Ltd. | Administrative & support | 2008 |
| Delta Construction Consultants Ltd | Professional & scientific | 2023 |
| Delta ENG Ltd | Construction | 2023 |
| Delta Engineering Support Services Limited | Professional & scientific | 1995 |
| Delta One Investments Ltd | Administrative & support | 2010 |
| Delta Tax Agents Ltd | Professional & scientific | 2014 |
| Delvic Developments Limited | Real estate | 2004 |
| Demac Electrical Services Limited | Manufacturing | 2013 |
| Dementiavision Ltd | Manufacturing | 2025 |
| Demeque Limited | Professional & scientific | 2014 |
| Demeque Property Limited | Other services | 2017 |
| Demi International Negoce & Associates Ltd | Wholesale & retail | 2024 |
| Demorlyn Ltd | Manufacturing | 2026 |
| Demure Events Ltd | Hospitality | 2026 |
| DEN Homes (Ireland) Ltd | Real estate | 2020 |
| Den-Isa Stays Ltd | Real estate | 2025 |
| Dena Trade Limited | Wholesale & retail | 2023 |
| Denholme Business Centre (SUB) Limited | Real estate | 2014 |
| Denholme Ducklings Oosc Ltd | Health & social care | 2024 |
| Denholme Fisheries Ltd | Hospitality | 2022 |
| Denholme Storage (BFD) Limited | Real estate | 2012 |
| Denholme Supermarket Ltd | Wholesale & retail | 2012 |
| Deniros 7 by the Slice Limited | Hospitality | 2024 |
| Denisa Andrei Driver Ltd | Transport & logistics | 2020 |
| Denley Engineering Co.(Heckmondwike)Limited | Professional & scientific | 1965 |
| Denning Builders Ltd | Construction | 2025 |
| Dennis Connaught & Sons Limited | Manufacturing | 2024 |
| Dennis Ruabon Commercial Ltd | Construction | 2011 |
| Dennis Williams Limited | Wholesale & retail | 1955 |
| Dent & Go (Huddersfield) Ltd | Health & social care | 2026 |
| Dent & Go Group Ltd | Financial services | 2026 |
| Dent Steel (UK) Limited | Manufacturing | 2006 |
| Dent Steel Holdings Limited | Professional & scientific | 2007 |
| Dent Steel Services (Yorkshire) Limited | Wholesale & retail | 1976 |
| Dent Wizard Ventures Limited | Wholesale & retail | 2010 |