| Donceanu Services Ltd | Administrative & support | 2025 |
| Doncopolitan Studio Limited | Information & communication | 2019 |
| Done Realty Limited | Financial services | 2025 |
| Doner&Co Ltd | Hospitality | 2025 |
| Doninvest Limited | Real estate | 2022 |
| Donipal Limited | Transport & logistics | 2021 |
| Donny Accounting Limited | Professional & scientific | 2025 |
| Donny Bar Lounge Limited | Hospitality | 2026 |
| Donny Barber Limited | Other services | 2024 |
| Donny Cabs Limited | Transport & logistics | 2023 |
| Donny Cutz Limited | Other services | 2025 |
| Donny Drink Limited | Wholesale & retail | 2023 |
| Donny Eats Ltd | Hospitality | 2022 |
| Donny Fresh Fish Ltd | Wholesale & retail | 2025 |
| Donny Kebab Limited | Hospitality | 2026 |
| Donny KOI Ltd | Agriculture & fishing | 2023 |
| Donny Market Limited | Wholesale & retail | 2026 |
| Donny Maxi Store Limited | Wholesale & retail | 2018 |
| Donny Members Club Ltd | Arts & recreation | 2025 |
| Donny Mobile Ltd | Wholesale & retail | 2025 |
| Donny Plates Ltd | Wholesale & retail | 2025 |
| Donny Print Ltd | Wholesale & retail | 2025 |
| Donny Trade Ltd | Wholesale & retail | 2026 |
| Donny Trans Ltd | Transport & logistics | 2019 |
| Donnyfest Nights Ltd | Arts & recreation | 2026 |
| Dons CIC | Arts & recreation | 2023 |
| Donxtra Ltd | Manufacturing | 2014 |
| Dony Ltd | Wholesale & retail | 2018 |
| Doodle POP Productions Ltd | Administrative & support | 2024 |
| Door Designs Ltd | Wholesale & retail | 2018 |
| Door Style UK Ltd | Manufacturing | 2019 |
| Doorfortyfour Ltd | Wholesale & retail | 2012 |
| Doorway to Dorkness Arcade Ltd | Arts & recreation | 2026 |
| Dopoku Ltd | Real estate | 2024 |
| Dora Holdings Ltd | Real estate | 2026 |
| Doran Scott Williams & Co Ltd | Administrative & support | 1999 |
| Dorand Ltd | Hospitality | 2026 |
| Doreenward Limited | Extraterritorial | 2013 |
| Dortrans Ltd | Transport & logistics | 2023 |
| Dorysan Ltd | Transport & logistics | 2017 |
| Dosky Car Wash Ltd | Wholesale & retail | 2025 |
| Dotnterry Ltd | Transport & logistics | 2026 |
| Dotphotostudio Limited | Professional & scientific | 2025 |
| Double Trouble Games Ltd | Arts & recreation | 2018 |
| Doublenine One Limited | Education | 2023 |
| Doubletautomotive Ltd | Wholesale & retail | 2025 |
| Doubleyew Productions Limited | Information & communication | 2017 |
| Doughprepne Ltd | Manufacturing | 2024 |
| Douglas C. Adams & Company Limited | Wholesale & retail | 1964 |
| Douglas Consultancy Ltd | Professional & scientific | 2026 |
| Dovetail Health & Care Consultancy Ltd | Professional & scientific | 2019 |
| Dovydas Couriers Limited | Transport & logistics | 2023 |
| Dowan Limited | Extraterritorial | 2015 |
| Dowding and Harris Limited | Manufacturing | 2016 |
| Down Home Dogs Limited | Other services | 2026 |
| Downs Pints Group Ltd | Hospitality | 2026 |
| Dowsett TM Ltd | Construction | 2023 |
| Doxakhane Company Netherlands Ltd | Wholesale & retail | 2023 |
| Doxey's Landscapes Ltd | Administrative & support | 2021 |
| DP Quantum Properties Ltd | Real estate | 2024 |
| Dpll Limited | Administrative & support | 2021 |
| Dplls Group Limited | Transport & logistics | 2025 |
| DPS (Driving Performance Solutions) Ltd | Professional & scientific | 2025 |
| DPS Automotive Ltd | Wholesale & retail | 2018 |
| DPS Motors Limited | Wholesale & retail | 2002 |
| DPV (Emerald) Ltd | Real estate | 2017 |
| Dpvl Productions Limited | Arts & recreation | 2023 |
| DR Drain Ltd | Construction | 2020 |
| DR MK Aesthetics Limited | Health & social care | 2022 |
| DR Mustafa Hattab Ltd | Health & social care | 2022 |
| DR. Paul Mollitt Psychotherapy Ltd | Professional & scientific | 2024 |
| Draftfree Ltd | Construction | 2025 |
| Drag Autosmart Ltd | Wholesale & retail | 2022 |
| Dragnic Limited | Transport & logistics | 2025 |
| Dragon Holdings Acquisitions Ltd | Real estate | 2017 |
| Dragon House 168 Ltd | Hospitality | 2026 |
| Dragon House Catering Ltd | Hospitality | 2022 |
| Dragonfly Financial Services Limited | Financial services | 2013 |
| Dragono Ventures Ltd | Information & communication | 2025 |
| Dragus Logistics Limited | Administrative & support | 2015 |
| Draig Digital Ltd | Information & communication | 2026 |
| Dransard Developments Limited | Construction | 2020 |
| Draper Contracting Services Ltd | Professional & scientific | 2025 |
| Draycott Doggy Day Care of Doncaster Ltd | Other services | 2025 |
| DRC Trans Ltd | Transport & logistics | 2026 |
| Dream 11 Ltd | Other services | 2019 |
| Dream Beds Yorkshire Limited | Wholesale & retail | 2025 |
| Dream Life Giveaways Limited | Wholesale & retail | 2024 |
| Dreamfun Ltd | Information & communication | 2025 |
| Dreamtracks Ltd. | Financial services | 2009 |
| Dresdner Securities Ltd | Information & communication | 2022 |
| Drew and Gregories Ltd | Information & communication | 2011 |
| DRG Partitions Limited | Construction | 2018 |
| Drhino Limited | Construction | 2013 |
| Drink for YOU Ltd | Professional & scientific | 2006 |
| Drive by Coffee Limited | Wholesale & retail | 2021 |
| Drive Commander Limited | Other services | 2017 |
| Drive Doncaster Ltd | Education | 2018 |
| Drive Tech Garage Ltd | Extraterritorial | 2026 |
| Driven 2 Distraction CIC | Education | 2024 |