| Cruz & Partners Limited | Professional & scientific | 2023 |
| Crypto Swag Ltd | Wholesale & retail | 2022 |
| Csebm Limited | Water & waste | 2020 |
| Csebm London Limited | Construction | 2017 |
| CTL Property's Limited | Real estate | 2025 |
| Cupcake Investments Ltd | Other services | 2020 |
| Curry Canvas Ltd | Hospitality | 2025 |
| Custom Links Care Ltd | Administrative & support | 2019 |
| Custom Links Workforce Solutions Ltd | Administrative & support | 2026 |
| Cygnet Children's Home Ltd | Extraterritorial | 2018 |
| D & G Testing Services Ltd | Construction | 2022 |
| D B Cladding Services Limited | Construction | 2019 |
| D H 2016 Limited | Hospitality | 2016 |
| D K Bradford Management Co Ltd | Households | 2022 |
| D K Bradford RTM Company Limited | Real estate | 2014 |
| D&P Services Ltd | Construction | 2020 |
| D-Vine Holdings Ltd | Real estate | 2026 |
| D1 Trading Ltd. | Wholesale & retail | 2014 |
| DAE & Nite Staffing Solutions Ltd. | Health & social care | 2019 |
| Daily Organics Ltd | Wholesale & retail | 2021 |
| Dalmatia Finance Ltd | Administrative & support | 2022 |
| Damen Financial Services Ltd | Financial services | 2024 |
| Damen Holdings Ltd | Financial services | 2024 |
| Danari Global Ltd | Professional & scientific | 2024 |
| Daniel Bisioc Ltd | Transport & logistics | 2025 |
| Dans Garden Khoun Ltd | Hospitality | 2016 |
| DAS Commercial Finance Ltd | Financial services | 2023 |
| Dash Dine Holdings Limited | Wholesale & retail | 2024 |
| Data Analysis Services Limited | Professional & scientific | 2021 |
| Dawes Park Ruby Limited | Hospitality | 2026 |
| Day GAS Engineering Limited | Construction | 2011 |
| Daynite Consultancy Limited | Professional & scientific | 2016 |
| Dcbk Ltd | Health & social care | 2022 |
| DCI Illumination (UK) Limited | Construction | 2022 |
| DDA Property Services Ltd | Real estate | 2016 |
| DDL Concepts Limited | Real estate | 2023 |
| DDR Haulage Ltd | Transport & logistics | 2026 |
| DE Cham Court Management Company Limited | Real estate | 1991 |
| Deea Team Ltd | Construction | 2025 |
| Deen Dynamics Limited | Extraterritorial | 2024 |
| Deetia Ltd | Professional & scientific | 2021 |
| DEF49 Ltd | Hospitality | 2026 |
| DEFNE26 Ltd | Hospitality | 2026 |
| Delight Inn UK Limited | Hospitality | 2023 |
| Dellow Limited | Extraterritorial | 1999 |
| Deltaside Limited | Other services | 2024 |
| Deluxeplan Limited | Real estate | 1991 |
| Delvedale Ltd | Real estate | 2015 |
| Demax Decor Ltd | Construction | 2017 |
| Demet Consultancy Ltd | Professional & scientific | 2020 |
| Denis Cafe Ltd | Hospitality | 2023 |
| DENIS1 Ltd | Hospitality | 2019 |
| Dentscape Limited | Health & social care | 2022 |
| DES Evans Services Limited | Construction | 2023 |
| Desh Express Ltd | Transport & logistics | 2019 |
| Design Box Limited | Professional & scientific | 2016 |
| Design Elements Inc Ltd | Construction | 2018 |
| Design Thing Ltd | Professional & scientific | 2013 |
| Design Vision (UK) Limited | Professional & scientific | 2006 |
| Designoholic UK Ltd | Wholesale & retail | 2019 |
| Detailed by TJ Limited | Wholesale & retail | 2024 |
| Deutsch@Deutsch Ltd | Wholesale & retail | 2011 |
| Devbrander Limited | Information & communication | 2025 |
| Devenir Limited | Administrative & support | 2017 |
| Devine Treasures Limited | Hospitality | 2017 |
| Devire Construction & Development Company Limited | Construction | 2017 |
| Devon Road Mortgages Ltd | Financial services | 2015 |
| Devon-Elise Johnson Limited | Arts & recreation | 2016 |
| Dexro Ltd | Real estate | 2014 |
| DG and S Properties Limited | Real estate | 2021 |
| Diamond Lagoon Ltd | Financial services | 2024 |
| DID Scott Limited | Information & communication | 2025 |
| Digilite Ltd | Professional & scientific | 2024 |
| Digital Oncloud Ltd | Information & communication | 2009 |
| Digitalize Ltd | Professional & scientific | 2023 |
| Ding Feng Trading Limited | Wholesale & retail | 2021 |
| Discount Quality Products Limited | Wholesale & retail | 2011 |
| Divergent Drama Ltd | Arts & recreation | 2015 |
| Diverse-Nature Limited | Information & communication | 2015 |
| Divine Smile Services Limited | Health & social care | 2023 |
| DJ Kebab Ltd | Transport & logistics | 2019 |
| DKD Property Services Limited | Real estate | 2023 |
| DKS Building Services Ltd | Construction | 2013 |
| DMG Building Services Ltd | Construction | 2023 |
| DMI Kitchens & Bedrooms Ltd | Construction | 2011 |
| DMK PAT Limited | Real estate | 2025 |
| Dmrb Trading Ltd | Wholesale & retail | 2024 |
| Documented Ltd | Arts & recreation | 2023 |
| Dolma Consultancy Ltd | Information & communication | 2019 |
| Dolma Foundation | Health & social care | 2007 |
| Dolma Group Limited | Financial services | 2020 |
| Dolma Himalayan Energy Limited | Financial services | 2019 |
| Dolphin Fish and Chips South Ltd | Hospitality | 2017 |
| Domaine Living Ltd | Real estate | 2026 |
| Domestigro Ltd | Wholesale & retail | 2025 |
| Domino Presentations Ltd | Arts & recreation | 2013 |
| Domrion Limited | Professional & scientific | 2025 |
| Dontconformadapt - DCA Ltd | Professional & scientific | 2025 |
| Doradus Limited | Administrative & support | 2010 |
| Doris Jones Limited | Health & social care | 2007 |