| Donald Design and Advertising Ltd | Professional & scientific | 2019 |
| Donann Limited | Wholesale & retail | 2011 |
| Done With Dirt Ltd | Administrative & support | 2020 |
| Dongola Private Care Ltd | Administrative & support | 2019 |
| Donnelly Watson Carpets and Flooring Limited | Construction | 2023 |
| Donnelly Watson Flooring Limited | Real estate | 2010 |
| Donovan Driving School Limited | Other services | 2014 |
| Doodledales Limited | Manufacturing | 2017 |
| Doodles Direct Ltd | Information & communication | 2008 |
| Door Wise Ltd | Construction | 2024 |
| DOOR2DOOR Leafleting Ltd | Transport & logistics | 2019 |
| DOOR2DOOR Media Ltd | Transport & logistics | 2016 |
| DOOR2DOOR Promotion Ltd | Transport & logistics | 2024 |
| Dopeops Ltd | Wholesale & retail | 2025 |
| Dorset Island Limited | Real estate | 2018 |
| Dose of Aesthetics Ltd | Health & social care | 2024 |
| Double A99 Ltd | Transport & logistics | 2026 |
| Double Duck Ltd | Professional & scientific | 2021 |
| Double J Medcare Ltd | Health & social care | 2024 |
| Double Take Salon Ltd | Other services | 2022 |
| Double-J Maintenance Ltd | Construction | 2021 |
| Doubleshare Properties Limited | Construction | 1989 |
| Dougie Hondo Cricket Limited | Education | 2023 |
| Dovaigra Ltd | Wholesale & retail | 2019 |
| Dovercourt Management Limited | Administrative & support | 2012 |
| Dovestreet.Co.Uk Limited | Real estate | 2010 |
| Doveton House RTM Company Limited | Households | 2025 |
| DOW Brandeston Limited | Construction | 1976 |
| Dowmartin Limited | Administrative & support | 2024 |
| Down to Earth Landscapes Limited | Construction | 1987 |
| Down to Earth Property Ltd | Real estate | 2020 |
| Downstream Innovation Ltd | Professional & scientific | 2017 |
| DPF Property Ltd | Real estate | 2022 |
| Dpholland Ltd | Construction | 2015 |
| DPL Group Limited | Construction | 2001 |
| DPS Electrical Contractors Limited | Energy | 2014 |
| DPS Rentals Ltd | Real estate | 2019 |
| DPS Tech Limited | Information & communication | 2024 |
| DPS Technology Group LLP | | 2001 |
| DPT Fitted Interiors Limited | Construction | 2015 |
| Dpts Holdings Limited | Financial services | 2023 |
| DQ Services (East Anglia) Limited | Construction | 2014 |
| DR a M. Tabrizi Dental Practice Limited | Administrative & support | 2013 |
| DR Leanne M Molloy Ltd | Health & social care | 2015 |
| DR Megan Samuel Aesthetics Ltd | Health & social care | 2021 |
| DR Oils Ltd | Wholesale & retail | 2024 |
| DR Paul Venables Consultant Cardiologist Ltd | Health & social care | 2011 |
| DR Peter Brown Limited | Health & social care | 2019 |
| DR Salie Clinics Ltd | Health & social care | 2023 |
| DR Simon Williams Limited | Health & social care | 2011 |
| DR ZEN AI Ltd | Information & communication | 2025 |
| Draft Products Limited | Wholesale & retail | 2021 |
| Dragon Blade Ltd | Hospitality | 2026 |
| Dragonskrypt Entertainment Ltd | Wholesale & retail | 2025 |
| Draken Systems Limited | Information & communication | 2012 |
| Drakos Investments Ltd | Real estate | 2025 |
| Dramatic Mansion Limited | Hospitality | 2008 |
| Dreadnought Studios Ltd | Information & communication | 2013 |
| Dream Awake China Limited | Arts & recreation | 2024 |
| Dream Awake Productions Limited | Arts & recreation | 2023 |
| Dream Factory Entertainment Limited | Arts & recreation | 2016 |
| Dreamcatcher Creative Ltd | Education | 2023 |
| Dreams 85 Ltd | Administrative & support | 2023 |
| Dreamscape Consultancy Services Ltd | Households | 2025 |
| Dreamscape Development Ltd | Construction | 2024 |
| Dreamwalker Limited | Health & social care | 2021 |
| Driftwoods Properties Ltd | Real estate | 2025 |
| Dring Properties LLP | | 2022 |
| Drinkald Ltd | Construction | 2019 |
| Drive Hatch Hire Ltd | Administrative & support | 2024 |
| Drive Hatch Logistics Ltd | Transport & logistics | 2025 |
| Drive Riches (Group) Limited | Education | 2025 |
| Drive Riches Limited | Other services | 2014 |
| Driver Base (East) Limited | Administrative & support | 2011 |
| Driver Leisure Ltd | Manufacturing | 2023 |
| Driver-F-H-A. Ltd | Transport & logistics | 2024 |
| Drivers R US Limited | Transport & logistics | 2021 |
| Driveserv Ltd | Transport & logistics | 2021 |
| Driveswitch Ltd | Wholesale & retail | 2020 |
| Driveway (UK) Ltd | Agriculture & fishing | 2002 |
| DRM Haulage Limited | Transport & logistics | 2017 |
| Drones Fenwick Limited | Hospitality | 2006 |
| Drop the Anchor Ltd | Arts & recreation | 2019 |
| Drsameer Ltd | Health & social care | 2025 |
| Druta Limited | Real estate | 2025 |
| DRY DEP Vintage Ltd | Wholesale & retail | 2026 |
| DS Imports & Exports Ltd | Transport & logistics | 2025 |
| DS International Training Limited | Professional & scientific | 2019 |
| DS Procure Consultancy Limited | Professional & scientific | 2026 |
| DS Recruitment Partnership Ltd | Administrative & support | 2019 |
| DS Solar Maintenance Ltd | Construction | 2023 |
| DS Training Limited | Administrative & support | 2024 |
| DS4 Solutions Limited | Information & communication | 2018 |
| DSA Global Consulting Limited | Professional & scientific | 2020 |
| Dsbl Consultancy Limited | Financial services | 2018 |
| Dscc Limited | Professional & scientific | 2014 |
| DSD Plastering + General Maintenance Ltd | Construction | 2019 |
| DSG Solutions Limited | Administrative & support | 2009 |
| Dsiv Ltd | Professional & scientific | 2015 |
| Dsquared EH Limited | Administrative & support | 2022 |