| Dbuk Operations Ltd | Professional & scientific | 2023 |
| DC-10 Developments Ltd | Real estate | 2021 |
| DCE Investments Limited | Financial services | 2026 |
| DCH Formal Hire Limited | Wholesale & retail | 2015 |
| Dcsmarttrim Ltd | Wholesale & retail | 2025 |
| DCW Pipework & Fabrications Ltd | Construction | 2024 |
| DDC Building Services Ltd | Construction | 2018 |
| DDC Construction Ltd | Professional & scientific | 2015 |
| DDI Fabrications Ltd | Manufacturing | 2016 |
| DDJ Holdings Limited | Financial services | 2016 |
| DE Clermont Designs Limited | Professional & scientific | 2017 |
| DE Vere Build Ltd | Construction | 2022 |
| Dead Bonny Designs Limited | Manufacturing | 2025 |
| Death by Cuddles Ltd | Wholesale & retail | 2025 |
| Debbie Blackburn Limited | Health & social care | 2008 |
| Debbie Joynes Psychotherapist Ltd | Health & social care | 2013 |
| Deborah Coates Ltd | Manufacturing | 2016 |
| Decorating Solutions Ltd | Construction | 2025 |
| Defcon 2 Records Limited | Information & communication | 2012 |
| Defence Prime Contract Services Limited | Administrative & support | 2017 |
| Definium Limited | Information & communication | 2023 |
| Delfybeauty Ltd | Wholesale & retail | 2025 |
| Delta Sierra Bravo Ltd | Real estate | 2022 |
| Delta Sports Coaching Limited | Education | 2022 |
| Delwin Jose Ltd | Health & social care | 2021 |
| Demolition Environmental Holdings Ltd | Financial services | 2016 |
| Demolition Environmental Services Limited | Administrative & support | 2006 |
| Denisa Cleaning Ltd | Administrative & support | 2025 |
| Denpaul Limited | Wholesale & retail | 2025 |
| Dental FX Studios Laboratory LLP | | 2010 |
| Dentists at Redhouse Ltd | Health & social care | 2007 |
| Derek Young & Co Accountants LLP | | 2016 |
| DES Asbestos Removals Limited | Administrative & support | 2013 |
| DES Build Holdings Limited | Administrative & support | 2019 |
| DES Build Limited | Administrative & support | 2012 |
| DES Demolition Limited | Administrative & support | 2017 |
| DES Environmental Services Limited | Water & waste | 2013 |
| DES Remediation & Enabling Limited | Professional & scientific | 2009 |
| Design Built Exhibitions Limited | Administrative & support | 1975 |
| Design Doctors Ltd | Professional & scientific | 2022 |
| Design Inside Ltd | Professional & scientific | 2014 |
| Design International Limited | Manufacturing | 2006 |
| DESIGNED4DOGS Ltd | Wholesale & retail | 2017 |
| Devision Ltd | Information & communication | 2019 |
| Dewco Limited | Financial services | 2025 |
| Dexter Trading Limited | Wholesale & retail | 2016 |
| Deya Wellbeing Limited | Manufacturing | 2023 |
| DF Partners Ltd | Construction | 2021 |
| DF Soft Furnishing Ltd | Manufacturing | 2016 |
| DGS Security Systems Ltd | Administrative & support | 2018 |
| DGT Holdings Limited | Financial services | 2020 |
| DGT Homes Limited | Real estate | 2022 |
| DH Financial Solutions Limited | Financial services | 2025 |
| DH Maintenance Ltd | Professional & scientific | 2025 |
| Dhaliwal UK Properties Ltd | Real estate | 2024 |
| Dhcl Limited | Information & communication | 2025 |
| Dhinakaran Rajendran Ltd | Information & communication | 2025 |
| Dial a TAN (Midlands) Ltd | Other services | 2012 |
| Diamond Rain Limited | Professional & scientific | 2004 |
| DIG Less Ltd | Extraterritorial | 2023 |
| Digital Marketing Management Services Ltd | Administrative & support | 2023 |
| Digitalis Consulting Limited | Information & communication | 2021 |
| Digitwin Engineering Limited | Construction | 2023 |
| Dijon Home & Flooring Holdings Limited | Wholesale & retail | 2010 |
| Dijon Home & Flooring Limited | Wholesale & retail | 2010 |
| Dingle Court Management Limited | Real estate | 1989 |
| Dipcoat Limited | Manufacturing | 2025 |
| Diplomat Transfer Limited | Wholesale & retail | 2024 |
| Dippy Divas and Dudes Limited | Wholesale & retail | 2020 |
| Dirak Limited | Wholesale & retail | 2022 |
| Direct Double Glazing Limited | Wholesale & retail | 1990 |
| Direct Gaming Limited | Administrative & support | 2012 |
| Direct Search Recruitment Specialist Limited | Administrative & support | 2013 |
| Directus Solutions Ltd | Information & communication | 2012 |
| Dirk Productions Ltd | Information & communication | 2014 |
| Distorted Events Limited | Arts & recreation | 2026 |
| Distrykt & Co 1 Ltd | Real estate | 2021 |
| Distrykt & Co 2 Ltd | Real estate | 2021 |
| Distrykt & Co 3 Ltd | Real estate | 2021 |
| Distrykt & Co 4 Ltd | Real estate | 2021 |
| Distrykt & Co 5 Ltd | Real estate | 2022 |
| Distrykt & Co Estates Management Ltd | Real estate | 2020 |
| Distrykt & Co Ltd | Construction | 2019 |
| Distrykt Consult Limited | Professional & scientific | 2012 |
| Distrykt Limited | Construction | 2017 |
| Ditya DAS Limited | Administrative & support | 2017 |
| Diverco Limited | Administrative & support | 1975 |
| Djames Property Maintenance Ltd | Manufacturing | 2024 |
| DJC Takeout Ltd | Hospitality | 2019 |
| DJP Investments LLP | | 2010 |
| DJS Interiors Ltd | Wholesale & retail | 2015 |
| DJS Plumbing Solutions Limited | Construction | 2025 |
| Djsl Ltd | Real estate | 2024 |
| Djuka Electrics Limited | Construction | 2016 |
| DKD Group Holdings Limited | Financial services | 2019 |
| DKD Trans Ltd | Manufacturing | 2021 |
| DL & O Properties Limited | Real estate | 2022 |
| DL Automotive Ltd. | Wholesale & retail | 2021 |
| DLS Building and Brickwork Ltd | Construction | 2025 |
| DLS Global Trading Ltd | Wholesale & retail | 2024 |