| DJR Futures Ltd | Administrative & support | 2017 |
| DJS Carpenters Ltd | Construction | 2013 |
| Djsally Caribbean Takeaway Limited | Hospitality | 2025 |
| Djuikem Miblanche Ltd | Information & communication | 2023 |
| Djvibe Advertiser UK Ltd | Professional & scientific | 2025 |
| DJW Maintenance Ltd | Households | 2024 |
| DK Editorial Services Limited | Information & communication | 2023 |
| DK Events (Midlands) Limited | Professional & scientific | 2024 |
| DK Lighting Agencies Ltd | Wholesale & retail | 2025 |
| Dkaya Limited | Wholesale & retail | 2023 |
| DKB Cleaning Ltd | Administrative & support | 2025 |
| DKD Properties Ltd | Real estate | 2025 |
| DKM Consultancy Ltd | Professional & scientific | 2023 |
| DKM Homes Limited | Real estate | 2008 |
| Dksm Holdings Limited | Other services | 2025 |
| Dksm Properties Limited | Real estate | 2023 |
| Dkuk Construction Ltd | Construction | 2025 |
| DLC & SS Properties Limited | Construction | 2022 |
| Dleconsultancy Ltd | Professional & scientific | 2024 |
| DLN Holdings Limited | Real estate | 2019 |
| DLW Medical Legal Services Ltd | Professional & scientific | 2013 |
| DLY Auto Cars Ltd | Wholesale & retail | 2023 |
| DMB Consultancy Limited | Health & social care | 2002 |
| DMC Motorcycles Ltd | Wholesale & retail | 2017 |
| DMD Transmissions Ltd | Wholesale & retail | 2014 |
| DME Fitness Limited | Other services | 2011 |
| DMG Chinezu Ltd | Wholesale & retail | 2026 |
| DMK Brickwork Ltd. | Construction | 2017 |
| Dmkm Consultants Ltd | Professional & scientific | 2023 |
| Dmoc Support Services Ltd | Health & social care | 2026 |
| DMP Property Maintenance Ltd | Construction | 2024 |
| Dmpro Software Limited | Information & communication | 2001 |
| DMS Engineering & Installations Ltd | Professional & scientific | 2026 |
| Dmsz Investments Ltd | Construction | 2020 |
| Dmvs Real Estate Limited | Real estate | 2024 |
| DMW Couriers Ltd | Transport & logistics | 2024 |
| DNA Interiors Ltd | Construction | 2025 |
| DNA Property Holdings Ltd | Real estate | 2023 |
| DNA Signature Limited | Professional & scientific | 2015 |
| DNA4U Limited | Professional & scientific | 2022 |
| DNL (Wolverhampton) Services Ltd | Wholesale & retail | 2024 |
| DNL Therm Limited | Construction | 2024 |
| DNO Solutions Ltd Ltd | Construction | 2023 |
| DNR Motors Limited | Wholesale & retail | 2020 |
| DNS Civil Services Ltd | Construction | 2018 |
| Doaba Builders (WM) Ltd | Construction | 2023 |
| Dobil Marketing Ltd | Professional & scientific | 2026 |
| Dobson & Foster Property Partners Limited | Real estate | 2026 |
| Doctor Air Brake Limited | Wholesale & retail | 2021 |
| Doctor MD Limited | Real estate | 2024 |
| Doctorsmile Ltd | Health & social care | 2019 |
| Doctyres Ltd | Administrative & support | 2019 |
| DODO29 Ltd | Transport & logistics | 2025 |
| Dogma Web Ltd | Information & communication | 2025 |
| Doiguj Ltd | Wholesale & retail | 2026 |
| Dokes Nova Consultancy Ltd | Administrative & support | 2020 |
| Dolcegj Limited | Hospitality | 2025 |
| Dolcegj Property Ltd | Real estate | 2026 |
| Doll Aesthetics Ltd | Other services | 2017 |
| Dollar and SON Continental Fish Limited | Wholesale & retail | 2019 |
| Dom's Haulage Ltd | Transport & logistics | 2020 |
| Domeniile Vrancei UK Ltd | Wholesale & retail | 2025 |
| Domestic and General Trading Ltd | Wholesale & retail | 2013 |
| Domi Nostrae Ltd | Real estate | 2024 |
| Domicura Care Solutions Limited | Health & social care | 2026 |
| Dominus Core Ltd | Professional & scientific | 2025 |
| Dominus Vision Ltd | Information & communication | 2025 |
| Domodus Limited | Real estate | 2022 |
| Domotec (Europe) Limited | Wholesale & retail | 1996 |
| Domotec Holdings Limited | Manufacturing | 2015 |
| Domus Dulcis Domus Ltd | Real estate | 2014 |
| Domūs Manutentio ET Servitia Ltd | Real estate | 2025 |
| Don'T GET Phished Ltd | Information & communication | 2022 |
| Donald Brown Enterprise Limited | Arts & recreation | 2019 |
| Doncaster Property Investment Fund Limited | Real estate | 1991 |
| Done Limited | Administrative & support | 2003 |
| Done Property Limited | Real estate | 2025 |
| Donghua Limited | Wholesale & retail | 2009 |
| Donia Food City Butcher Ltd | Manufacturing | 2024 |
| Donia Supermarket Ltd | Wholesale & retail | 2021 |
| Donington Church Centre Limited | Other services | 1977 |
| Doodlepear Ltd | Administrative & support | 2019 |
| Door Step Health Limited | Health & social care | 2020 |
| Doorsmart Ltd | Manufacturing | 2005 |
| Dorankwell Ltd | Information & communication | 2025 |
| Doric Homes Limited | Real estate | 2004 |
| Dorin Gavrila Ltd | Transport & logistics | 2023 |
| Dormant Company 03020408 Limited | Manufacturing | 1995 |
| Dormen Foods (Wolverhampton) Limited | Manufacturing | 2021 |
| Dosa HUT Ltd | Hospitality | 2019 |
| Dosa HUT Outdoor Catering Ltd | Hospitality | 2015 |
| Dosanjh Company Ventures Ltd | Health & social care | 2026 |
| Dosanjh Properties Limited | Real estate | 2006 |
| DOT & Beam Ltd | Other services | 2025 |
| DOT Creations Limited | Hospitality | 2020 |
| Dotcom World Limited | Professional & scientific | 2009 |
| Dotty’S Daycare & Home Boarding Ltd | Other services | 2024 |
| Double 8 Care Limited | Health & social care | 2025 |
| Doughi Ltd | Manufacturing | 2026 |
| Doughty Pressings Limited | Manufacturing | 1944 |