| Davies Industrial Doors Ltd | Manufacturing | 2021 |
| Dawn River Ltd | Hospitality | 2017 |
| Day Leisure Ltd | Hospitality | 2017 |
| DB Home Improvements Ltd | Construction | 2012 |
| DB Medical Services Limited | Health & social care | 2016 |
| Db.Radiologist Limited | Education | 2020 |
| DBD Consultancy Limited | Professional & scientific | 2009 |
| DBD Nuclear Limited | Professional & scientific | 2009 |
| DC Property and Investments Ltd | Real estate | 2025 |
| DC Property Cheshire Limited | Real estate | 2023 |
| DC Remediation (Mere Farm) Ltd | Water & waste | 2026 |
| DC Remediation Ltd | Water & waste | 2025 |
| DC SUB Sea Ltd | Mining & quarrying | 2012 |
| Dcbuxtoncompany Limited | Construction | 2026 |
| DCM Stairlifts Limited | Professional & scientific | 2001 |
| Ddef Limited | Professional & scientific | 2025 |
| Dduggan Plumbing Ltd | Construction | 2025 |
| Deadly Dozen Academy Limited | Arts & recreation | 2019 |
| Deadly Dozen Gym Ltd | Arts & recreation | 2015 |
| Deadly Dozen Limited | Arts & recreation | 2024 |
| Dean Court Direct (Freehold) Limited | Households | 2005 |
| Dean Lewis Estates Limited | Construction | 2015 |
| Dean Road (Management Company) 3 Limited | Households | 1998 |
| Deano Limited | Other services | 1996 |
| Deans Farms Ltd | Agriculture & fishing | 2002 |
| Debbie Parmiter Catering Ltd | Hospitality | 2020 |
| Debt Saving Solutons Limited | Financial services | 2018 |
| Decent Research Ltd | Professional & scientific | 2021 |
| Decipher Construction Management Limited | Construction | 2011 |
| Decipher Consulting (UK) Limited | Professional & scientific | 2001 |
| Decipher Group Limited | Financial services | 2016 |
| Decipher Programme Management Limited | Construction | 2015 |
| Deck Brokers Limited | Construction | 2009 |
| Decor Flowers Limited | Wholesale & retail | 2011 |
| Decorative Salvage Ltd | Wholesale & retail | 2020 |
| DEE Dynamics Limited | Administrative & support | 2022 |
| Deepcourt Limited | Construction | 1980 |
| Defensecrypt Ltd | Information & communication | 2023 |
| Defineline Systems Ltd | Professional & scientific | 2019 |
| DEI Machina Limited | Information & communication | 2024 |
| Deira Consulting Limited | Professional & scientific | 2023 |
| Deliver My Container Limited | Transport & logistics | 2024 |
| Della Cruz Investments Ltd | Real estate | 2025 |
| Deloria & Associates Ltd | Real estate | 2020 |
| Delphine Ryan Ltd | Professional & scientific | 2018 |
| Delta J Limited | Professional & scientific | 2019 |
| Delta Waste Management Limited | Water & waste | 2006 |
| Deltawaste Resource Limited | Extraterritorial | 2016 |
| Demaskas Respiratory Services Ltd | Administrative & support | 2026 |
| Demstone Chambers Ltd | Professional & scientific | 2019 |
| Deniz Business Consultancy Ltd | Professional & scientific | 2020 |
| Denormal Limited | Information & communication | 2012 |
| Denton Cooke Limited | Extraterritorial | 2022 |
| Dentsaway Limited | Professional & scientific | 2004 |
| Dept for Professional Development Ltd | Professional & scientific | 2021 |
| Dept of Digital Ltd | Information & communication | 2020 |
| Derbyshire Lock and Safe Ltd | Administrative & support | 2025 |
| Dermmatch (UK) Limited | Extraterritorial | 2016 |
| Derwent Wheeler Limited | Real estate | 2018 |
| Design for the Mind Ltd | Real estate | 2020 |
| Designequals Ltd | Professional & scientific | 2018 |
| Desiluted Ltd | Other services | 2025 |
| Detopo Ltd | Professional & scientific | 2018 |
| Develop to Thrive Limited | Professional & scientific | 2023 |
| Devoir Kitchens & Bedrooms Ltd | Manufacturing | 2023 |
| Devon Purchasing Limited | Wholesale & retail | 2012 |
| DEX Project Management Limited | Administrative & support | 2024 |
| Dexamar Limited | Financial services | 2015 |
| Dglynch Ltd | Professional & scientific | 2020 |
| DGM Transport Ltd | Transport & logistics | 2023 |
| Dhanvitha Medical Services Private Limited | Health & social care | 2026 |
| DHH Bradford Limited | Construction | 2024 |
| Diaeterna Ltd | Professional & scientific | 2023 |
| Dial Tax Services Ltd | Professional & scientific | 2002 |
| Diamond Heating Services Ltd | Construction | 2020 |
| Diamond Hotel Collection Limited | Professional & scientific | 2018 |
| Diamondyze Europe Ltd | Manufacturing | 2012 |
| Diane Davies Dimensions Ltd | Wholesale & retail | 2006 |
| Diane's Dustbusters Limited | Administrative & support | 2014 |
| Dickogecko Enterprises Limited | Financial services | 2019 |
| DID Engineering Limited | Manufacturing | 2017 |
| Didsbury Village Properties Limited | Real estate | 1999 |
| Different by Design Limited | Professional & scientific | 2009 |
| Digital Accounting Support Services Limited | Administrative & support | 2014 |
| Digital Acquisition Consulting Limited | Information & communication | 2015 |
| Digital Delivery Partners Ltd | Information & communication | 2025 |
| Digital Hive Limited | Real estate | 2015 |
| Digital Installer Ltd | Information & communication | 2023 |
| Digital Medical Innovation Limited | Professional & scientific | 2024 |
| Digital Touchology Ltd | Information & communication | 2022 |
| Diligentia Global Solutions Ltd | Professional & scientific | 2013 |
| Dinah's Holdings Ltd | Financial services | 2013 |
| Dinah's Limited | Hospitality | 2017 |
| Dinnissen UK Ltd | Manufacturing | 2024 |
| Dinoys Ltd | Professional & scientific | 2023 |
| Dior Management Limited | Real estate | 2013 |
| Direct Design Limited | Extraterritorial | 1988 |
| Direct Food Ingredients Limited | Wholesale & retail | 1994 |
| Direct Heating Services Ltd | Construction | 2021 |
| Direct Heating Solutions Limited | Construction | 2010 |