| Domus Wohnbau Ltd. | Real estate | 2023 |
| DON Padel Limited | Arts & recreation | 2025 |
| Donna Terry Limited | Health & social care | 2010 |
| Door to Door Sameday Ltd | Transport & logistics | 2022 |
| Doorlux Group Ltd | Wholesale & retail | 2024 |
| Doorlux Ltd | Wholesale & retail | 2018 |
| DOT Design & Print Limited | Administrative & support | 2003 |
| Dottie MAI Designs Limited | Wholesale & retail | 2018 |
| Dotty Bridal Limited | Wholesale & retail | 2015 |
| Dotty Holdings Limited | Financial services | 2022 |
| Double Broz Ltd | Hospitality | 2025 |
| Double Two (International) Limited | Professional & scientific | 1967 |
| Double Two Limited | Manufacturing | 1954 |
| Douglas Varley Limited | Construction | 2026 |
| DOV Limited | Wholesale & retail | 2023 |
| Dove Aesthetics Ltd | Other services | 2022 |
| Dovecote Services Limited | Real estate | 1993 |
| DP Publicity Group LLP | | 2009 |
| DP Publicity Limited | Professional & scientific | 2000 |
| Dped Design Ltd | Professional & scientific | 2024 |
| DPP Management Limited | Professional & scientific | 2001 |
| DPS Europe Limited | Other services | 2026 |
| Dpsb Properties Ltd | Real estate | 2024 |
| DR BEI Ltd | Health & social care | 2023 |
| DR Deepa Limited | Health & social care | 2026 |
| DR. Brown Real Estate Limited | Real estate | 2017 |
| Dr.Andrew Power and Company Limited | Health & social care | 2017 |
| Dr.Inks Bar Limited | Hospitality | 2018 |
| Dracula Experience Limited | Arts & recreation | 2002 |
| Dracup (UK) Limited | Manufacturing | 1960 |
| Draf Property & Business Advisors Ltd | Professional & scientific | 2026 |
| Dragon C Take Away Ltd | Hospitality | 2022 |
| Dragon Concrete Pumping Limited | Construction | 2009 |
| Dragon Lair Tattoo Studio Limited | Administrative & support | 2003 |
| Dragon Plumbing and Heating Services Ltd | Construction | 2024 |
| Dragon Underfloor Heating & Screed Limited | Construction | 2012 |
| Dragon Villas Ltd | Construction | 2019 |
| Draintex Ltd | Water & waste | 2007 |
| DRE Consultants Limited | Professional & scientific | 2019 |
| Dream Hire & Deco Ltd | Other services | 2020 |
| Dream Home Haven Ltd | Construction | 2023 |
| Dream Home Mortgages Limited | Professional & scientific | 2020 |
| Dream Recruitment Ltd | Administrative & support | 2025 |
| Dreambuilt Limited | Construction | 2025 |
| Dreamcircus Limited | Wholesale & retail | 2015 |
| Dreamgreens (West Yorkshire) Ltd | Administrative & support | 2017 |
| Dreaming Methods Ltd | Information & communication | 2021 |
| Dreamphoto Limited | Other services | 1995 |
| Dreamplayer Limited | Other services | 1995 |
| Drfe Holdings Limited | Real estate | 2024 |
| Drfe Properties Limited | Real estate | 2024 |
| Drift Beds Ltd | Manufacturing | 2023 |
| Drift Interiors Ltd | Manufacturing | 2021 |
| Drive UK Logistics Limited | Transport & logistics | 2025 |
| Driven Executive Cars Limited | Transport & logistics | 2015 |
| Driven Forensics Ltd | Professional & scientific | 2023 |
| Driver CPC Ltd | Transport & logistics | 2024 |
| Driver Danny Ltd | Transport & logistics | 2026 |
| Driving Services ALL Over Limited | Education | 2025 |
| DRY Stone Wakefield Ltd | Construction | 2020 |
| Drywall Easy Estimate Limited | Information & communication | 2017 |
| DS Insolvency Limited | Financial services | 2016 |
| DS Netcom Consultancy Ltd | Transport & logistics | 2014 |
| DS Oral Solutions Ltd | Health & social care | 2022 |
| DS Recycling & Metals Limited | Water & waste | 2021 |
| DSA Joinery Ltd | Manufacturing | 2010 |
| DSG Decorating Limited | Construction | 2025 |
| DSM Productions Limited | Arts & recreation | 2016 |
| Dsmc Consulting Limited | Professional & scientific | 2020 |
| DTW Installations Limited | Construction | 2005 |
| DTW Wakefield Limited | Information & communication | 2014 |
| DU4 Solutions Ltd | Health & social care | 2023 |
| Dubhe WTC Ltd | Wholesale & retail | 2010 |
| Duck Walk Records Ltd | Wholesale & retail | 2025 |
| Duffy Clan Solutions Ltd | Information & communication | 2026 |
| Duggan Project Management Limited | Professional & scientific | 2014 |
| Duke Beds Ltd | Manufacturing | 2023 |
| Dulevo UK Limited | Extraterritorial | 2018 |
| Dumpy Jointing Limited | Administrative & support | 2015 |
| Dunbrik (Yorks) Limited | Manufacturing | 1946 |
| Duncan Renewables Limited | Manufacturing | 2012 |
| Duodermis Limited | Health & social care | 2019 |
| Dural (U K) Ltd. | Construction | 1992 |
| Durdey Property Services Ltd | Households | 2019 |
| Durkar Devils JFC Limited | Arts & recreation | 2015 |
| Durkar Farm Estates Limited | Real estate | 2025 |
| Durkar Fisheries Limited | Hospitality | 2010 |
| Durnworth Limited | Hospitality | 1986 |
| Duskin UK Ltd | Administrative & support | 2025 |
| Dust Control Environmental Ltd | Administrative & support | 2010 |
| Duxburynoble Limited | Financial services | 2025 |
| Dvda Holdings Ltd | Financial services | 2026 |
| DVL Properties Ltd | Construction | 2026 |
| DW Management and Engineering Services Limited | Professional & scientific | 2017 |
| DW Trading 2021 Ltd | Hospitality | 2021 |
| DWA Plumbing & Heating Services Ltd | Construction | 2016 |
| DWH CAD Services Limited | Professional & scientific | 2011 |
| DWX Group Ltd | Financial services | 2025 |
| Dyce Engineering Services Limited | Professional & scientific | 2012 |
| Dynamic Electrical Engineering Ltd | Construction | 2017 |