| Dhrasa Services Ltd | Information & communication | 2025 |
| Dhriara Ltd | Real estate | 2019 |
| Dhriyaniz Ltd | Wholesale & retail | 2025 |
| Dhruv Logistics Limited | Transport & logistics | 2023 |
| Dhruvin Trading Ltd | Manufacturing | 2019 |
| DHS Design Limited | Professional & scientific | 2008 |
| Dhupa Limited | Wholesale & retail | 2026 |
| Dhutia & Co Ltd | Health & social care | 2023 |
| Dhwija’S Creation Ltd | Wholesale & retail | 2025 |
| Dhyaan Enterprise Ltd | Wholesale & retail | 2025 |
| Dhyanish Holdings Ltd | Hospitality | 2026 |
| DI Palma (UK) Ltd | Information & communication | 2019 |
| DI PMU Ltd | Other services | 2023 |
| Diadora UK Limited | Wholesale & retail | 2022 |
| Diag IT Consulting Ltd | Information & communication | 2021 |
| Diagnostic Clinics Limited | Health & social care | 2022 |
| Dial a Shisha Ltd | Other services | 2013 |
| Dial-A-Medic Ltd | Health & social care | 2022 |
| Diallo Care Flow Ltd | Health & social care | 2025 |
| Dialysis UK CIC | Education | 2021 |
| Diamond Arrow Limited | Transport & logistics | 2012 |
| Diamond Business Park Ltd | Real estate | 2017 |
| Diamond Care Support Homes Limited | Health & social care | 2025 |
| Diamond Coral Investments Limited | Real estate | 2022 |
| Diamond Dispense (Leicester) Ltd | Professional & scientific | 2025 |
| Diamond Driver Training Ltd | Education | 2010 |
| Diamond Earls Ltd | Wholesale & retail | 2025 |
| Diamond Hand Clothing Ltd | Wholesale & retail | 2022 |
| Diamond Hand Private Ltd | Health & social care | 2019 |
| Diamond Homes Leicester Limited | Real estate | 2021 |
| Diamond Joinery Midlands Limited | Construction | 2017 |
| Diamond Oaks Consulting Limited | Professional & scientific | 2020 |
| Diamond Painting, Decorators & Contractors Ltd | Administrative & support | 2018 |
| Diamond PAY SOL Limited | Wholesale & retail | 2024 |
| Diamond Power Solutions Ltd | Construction | 2026 |
| Diamond Properties & Investments Ltd | Real estate | 2021 |
| Diamond Scissors Hair CUT Ltd | Other services | 2019 |
| Diamond Ship Services Ltd | Wholesale & retail | 2021 |
| Diamond Stone Estates Ltd | Real estate | 2024 |
| Diamond Styles Limited | Manufacturing | 2008 |
| Diamond Tree Ltd | Real estate | 2021 |
| Diamond Wood & Shaw Limited | Professional & scientific | 2012 |
| Diamondandrocks Ltd | Hospitality | 2024 |
| Diamonds & Pearl Trading Limited | Wholesale & retail | 2014 |
| Diane E Weston Limited | Professional & scientific | 2019 |
| Diane Group Ltd | Health & social care | 2026 |
| Diane Hipkins Ltd | Professional & scientific | 2015 |
| Dias Academy Limited | Education | 2025 |
| Diasam Ltd | Extraterritorial | 2021 |
| DIC Leicester Ltd | Construction | 2025 |
| Dica Design Limited | Professional & scientific | 2023 |
| Dice Display Limited | Professional & scientific | 2004 |
| Dicet Ltd | Wholesale & retail | 2026 |
| Dicet Properties Ltd | Real estate | 2026 |
| Dichotic Dilemma Social Enterprise Ltd | Public administration | 2023 |
| Dickens & Dade Limited | Real estate | 2009 |
| Dicksha Estates Limited | Real estate | 2025 |
| Didactica Ltd | Extraterritorial | 2015 |
| Didar Trading Ltd | Wholesale & retail | 2021 |
| Didharia Transport Ltd | Transport & logistics | 2026 |
| Didobi Limited | Information & communication | 2018 |
| Didsbury and Chorlton Limited | Real estate | 2010 |
| Diesel Divas Ltd | Transport & logistics | 2025 |
| Diez UK Limited | Extraterritorial | 2011 |
| Diffability Driving Limited | Education | 2024 |
| DIG Landscapes and Garden Design Ltd | Administrative & support | 2022 |
| DIG, DIG & DIG Ltd | Construction | 2015 |
| Digaale Transport Ltd | Transport & logistics | 2024 |
| Diggaland International Ltd | Transport & logistics | 2025 |
| Diggle Holdings Limited | Professional & scientific | 2015 |
| Digi Media Global Limited | Administrative & support | 2014 |
| Digicards Ltd | Information & communication | 2026 |
| Digicode Pixel Limited | Wholesale & retail | 2025 |
| Digidok Ltd | Wholesale & retail | 2024 |
| Digiflow Software Limited | Information & communication | 2023 |
| Digify IT Ltd | Wholesale & retail | 2026 |
| Digihealth Consultancy Ltd | Professional & scientific | 2022 |
| Digires Limited | Information & communication | 2025 |
| Digital Accountancy Chain Ltd | Professional & scientific | 2022 |
| Digital AGE Events Limited | Other services | 2018 |
| Digital Apex Limited | Information & communication | 2013 |
| Digital Bros Ltd | Information & communication | 2025 |
| Digital Crowds UK Limited | Information & communication | 2013 |
| Digital Design Studio Limited | Professional & scientific | 2026 |
| Digital Diamond Marketing Ltd | Wholesale & retail | 2022 |
| Digital Focus Ltd | Other services | 2016 |
| Digital Hive Software UK Limited | Information & communication | 2015 |
| Digital Imaging Group Limited | Financial services | 2019 |
| Digital Kreations Limited | Information & communication | 2011 |
| Digital Link Limited | Wholesale & retail | 2007 |
| Digital Media Services Ltd | Administrative & support | 1997 |
| Digital Pays Limited | Information & communication | 2012 |
| Digital Planning Limited | Information & communication | 2020 |
| Digital Platypus Ltd | Wholesale & retail | 2025 |
| Digital Playground Ltd | Administrative & support | 2026 |
| Digital Positive Media Limited | Professional & scientific | 2023 |
| Digital Rewards Limited | Administrative & support | 2017 |
| Digital Saving Ltd | Wholesale & retail | 2025 |
| Digital Solutions LAB Ltd | Other services | 2020 |
| Digital Thunder Ltd | Information & communication | 2018 |