| Denby Dale Catering Limited | Hospitality | 2025 |
| Denby Dale Coffee Limited | Wholesale & retail | 2007 |
| Denby Dale Gardening Services Limited | Administrative & support | 2015 |
| Denby Dale Horticulture Ltd | Administrative & support | 2024 |
| Denby Dale News Limited | Wholesale & retail | 2003 |
| Denby Dale Podiatry Limited | Health & social care | 2020 |
| Denby Dale Private Pool Limited | Arts & recreation | 2025 |
| Denby Dale Tennis Club Limited | Arts & recreation | 2008 |
| Denby Landscapes Ltd | Administrative & support | 2021 |
| Denby Services Limited | Professional & scientific | 2017 |
| Denby Solutions Ltd | Wholesale & retail | 2014 |
| Denroyd Farm Events Limited | Real estate | 2016 |
| Denroyd Farm Weddings Limited | Real estate | 2018 |
| Dent a Find Limited | Information & communication | 2025 |
| Dental Care Direct Limited | Health & social care | 2013 |
| Dentamere Ltd | Health & social care | 2015 |
| Denton Construction Yorkshire Ltd | Construction | 2026 |
| Denton Guest Estates Ltd | Real estate | 2025 |
| Denton Ross Medical Ltd | Professional & scientific | 2014 |
| Dentopt Limited | Other services | 2008 |
| Dentrep Ltd | Wholesale & retail | 2024 |
| Denx Ltd | Construction | 2011 |
| DEO Williams Consulting Limited | Financial services | 2018 |
| Dependable Health Care Ltd | Health & social care | 2015 |
| Dependable Housing Solutions Ltd | Real estate | 2023 |
| DEPLOY12 Limited | Information & communication | 2019 |
| Dermaplan Ltd | Information & communication | 2024 |
| Desandrini Ltd | Transport & logistics | 2026 |
| Desanna's Properties Ltd | Real estate | 2025 |
| Desiemma Limited | Wholesale & retail | 2025 |
| Design by H.S Limited | Professional & scientific | 2025 |
| Design Line Huddersfield Limited | Administrative & support | 2007 |
| Design That Fits Ltd | Administrative & support | 2012 |
| Designer Threads Hudds Limited | Wholesale & retail | 2019 |
| Designer Worships YOU! Ltd | Arts & recreation | 2025 |
| Designerade Limited | Professional & scientific | 2016 |
| Designpassion Ltd | Professional & scientific | 2018 |
| Desire Group GH Limited | Construction | 2025 |
| Detail Masters UK Limited | Wholesale & retail | 2021 |
| Deus Volens Ltd | Health & social care | 2009 |
| Deux Property Ltd | Real estate | 2022 |
| Development Solutions (Leeds) Ltd | Real estate | 2020 |
| Devenish & Ford Holdings Limited | Financial services | 2025 |
| Devenport Properties Limited | Real estate | 2018 |
| Devine Consulting (UK) Limited | Information & communication | 2014 |
| Devlentra Tech Ltd | Wholesale & retail | 2026 |
| Devonshire Capital 1995 Ltd | Financial services | 2025 |
| Devonte Property Ltd | Real estate | 2025 |
| DEW Displays Ltd | Arts & recreation | 2022 |
| Dewhurst Road 1959 Limited | Extraterritorial | 2014 |
| Dewshill Wind Farm Limited | Energy | 2025 |
| Deynebrook Management Company Limited | Households | 2019 |
| DGA Plumbing & Heating Limited | Construction | 2016 |
| Dgcinc Ltd | Information & communication | 2025 |
| DH Asset Management Ltd | Real estate | 2024 |
| DH Design & Consultancy Ltd | Construction | 2024 |
| DH Optical Ltd | Health & social care | 2022 |
| DH Twenty Ltd | Real estate | 2018 |
| DH Yorkshire Limited | Construction | 2026 |
| Dh&Yy Limited | Health & social care | 2010 |
| DH16 Ltd | Other services | 2012 |
| Dhand INK Ltd | Information & communication | 2021 |
| Dhay Properties Ltd | Real estate | 2021 |
| Dhaymon Ltd | Wholesale & retail | 2020 |
| DHF Furnishing Ltd | Wholesale & retail | 2020 |
| DHG Investments Ltd | Real estate | 2022 |
| Dhillon Delivery Services Ltd | Transport & logistics | 2022 |
| Dhinsa Dental Limited | Health & social care | 2008 |
| DHN Consulting Ltd | Professional & scientific | 2023 |
| Dhrf Property Ltd | Real estate | 2024 |
| DI Bosco (Properties) Limited | Construction | 2016 |
| DI Estate Ltd | Real estate | 2025 |
| DIA Asset Management Ltd | Real estate | 2021 |
| Diagonally Ltd | Information & communication | 2025 |
| Dial- a- Windscreen Limited | Other services | 2003 |
| Diamond Bedz Ltd | Manufacturing | 2021 |
| Diamond CUT Alloys Ltd | Other services | 2019 |
| Diamond Door Trading Limited | Wholesale & retail | 2021 |
| Diamond Prestige Motor Company Limited | Wholesale & retail | 2023 |
| Diarra Services Limited | Construction | 2025 |
| Diaspora Housing Solution Limited | Construction | 2025 |
| Dickens Site Services Ltd | Construction | 2015 |
| Dickinson's Chemist Ltd | Wholesale & retail | 2002 |
| Didi's (Linthwaite) Ltd | Hospitality | 2025 |
| Diego Cane Corso Limited | Hospitality | 2026 |
| Diffx Limited | Extraterritorial | 2010 |
| Digifuse Co Limited | Information & communication | 2025 |
| Digileads Marketing Ltd | Professional & scientific | 2021 |
| Digisee Ltd | Construction | 2018 |
| Digisim Ltd | Extraterritorial | 2024 |
| Digital Brainwave Technologies Limited | Information & communication | 2024 |
| Digital Collective Agency Ltd | Information & communication | 2018 |
| Digital Crafts Systems Ltd | Information & communication | 2021 |
| Digital Emporium Consulting Ltd | Professional & scientific | 2025 |
| Digital Green Ltd | Information & communication | 2020 |
| Digital Hothouse Ltd | Information & communication | 2024 |
| Digital ID Security Limited | Information & communication | 2016 |
| Digital Mark Agency Ltd | Professional & scientific | 2021 |
| Digital Orbit Ltd | Information & communication | 2023 |
| Digital Pace Ltd | Professional & scientific | 2026 |