| Adesol Consultancy Limited | Professional & scientific | 2015 |
| Adevarat Ltd | Transport & logistics | 2019 |
| Adfur Limited | Real estate | 2026 |
| Adfuse Ltd | Professional & scientific | 2017 |
| ADG Distribution Ltd | Wholesale & retail | 2024 |
| Adgnizion Ventures Ltd | Wholesale & retail | 2026 |
| ADH Retail Group Ltd | Wholesale & retail | 2025 |
| Adhd Locum Limited | Health & social care | 2026 |
| Adhd Specialist Clinics Limited | Health & social care | 2024 |
| ADHD360COMPLETE Limited | Health & social care | 2026 |
| Adhdfirst Ltd | Health & social care | 2025 |
| Adheen Autos Limited | Wholesale & retail | 2025 |
| Adherium Europe Ltd | Administrative & support | 2016 |
| ADI & NIC Estate Ltd | Real estate | 2026 |
| ADI Automation Limited | Construction | 2009 |
| ADI Automotive Services Limited | Administrative & support | 2011 |
| ADI Building & Refurbishment Limited | Construction | 2010 |
| ADI Car Sales Ltd | Wholesale & retail | 2019 |
| ADI Climate Systems Limited | Construction | 2011 |
| ADI Exclusive Ltd | Hospitality | 2015 |
| ADI Facilities Engineering Limited | Professional & scientific | 2004 |
| ADI Fire and Security Limited | Administrative & support | 2010 |
| ADI Food and Beverage Services Limited | Professional & scientific | 2010 |
| ADI Group Services Limited | Professional & scientific | 2010 |
| ADI Infotech Ltd | Information & communication | 2011 |
| ADI Intelligent Buildings Limited | Construction | 2012 |
| ADI Life Sciences Limited | Professional & scientific | 2021 |
| ADI NET Zero Limited | Professional & scientific | 2026 |
| ADI Tiktok Shop Ltd | Construction | 2023 |
| ADI Waste Systems Limited | Administrative & support | 2010 |
| Adian's Tropical Fusion Ltd | Hospitality | 2023 |
| Adiera Limited | Manufacturing | 2007 |
| Adikeih CIC | Education | 2026 |
| Adil Homes Ltd | Real estate | 2021 |
| Adil Nova Ltd | Wholesale & retail | 2026 |
| Adil Properties Ltd | Real estate | 2026 |
| Adil Training & Consultancy Ltd | Professional & scientific | 2016 |
| Adil&Sonskhairhomes Ltd | Real estate | 2025 |
| Adilautos Ltd | Wholesale & retail | 2025 |
| Adils Textiles Limited | Wholesale & retail | 2025 |
| Adina Sutton Limited | Hospitality | 2025 |
| Adinception Limited | Information & communication | 2025 |
| Adinkra Heritage CIC | Hospitality | 2025 |
| Adinspire Ltd | Wholesale & retail | 2021 |
| Adira Crafts Limited | Wholesale & retail | 2022 |
| Adisur Properties Limited | Real estate | 2019 |
| Aditi-Sapna Medical Limited | Health & social care | 2014 |
| Aditum Group Ltd | Administrative & support | 2018 |
| Adiyan System Solutions Limited | Professional & scientific | 2025 |
| Adjuvo Holdings Limited | Financial services | 2020 |
| Adks Properties Limited | Real estate | 2022 |
| ADL Braklin Sport and Entertainment Limited | Arts & recreation | 2023 |
| ADL Homestores Ltd | Wholesale & retail | 2026 |
| Adlane Corrosion Ltd | Manufacturing | 2013 |
| Adler Financial Planning Limited | Financial services | 2009 |
| Adlifto Commerce Ltd | Wholesale & retail | 2022 |
| Adlisc Medical Devices Private Limited | Manufacturing | 2021 |
| ADM Care Ltd | Health & social care | 2013 |
| ADM Care Services Limited | Real estate | 2025 |
| ADM Share 1 Ltd | Financial services | 2023 |
| Admaiden Ltd | Administrative & support | 2010 |
| Admedo Ltd | Professional & scientific | 2012 |
| Admihale Consulting Ltd | Professional & scientific | 2021 |
| Admiki Ltd | Information & communication | 2025 |
| Admin Folio Limited | Administrative & support | 2025 |
| Adminibble Ltd | Information & communication | 2023 |
| Adminless Ltd | Information & communication | 2025 |
| Admir Ltd | Hospitality | 2025 |
| Admiral Business Solutions Ltd | Real estate | 2026 |
| Admiral Security Ltd | Administrative & support | 2017 |
| Admire Clothing Limited | Wholesale & retail | 2015 |
| Adms Associates Limited | Professional & scientific | 2025 |
| ADN Plumbing and Heating Ltd | Construction | 2018 |
| Adnan Aslam Limited | Health & social care | 2014 |
| Adnan Collection Ltd | Wholesale & retail | 2016 |
| Adnan Designer Studio Ltd | Wholesale & retail | 2015 |
| Adnan Ghelle Solutions Ltd | Information & communication | 2025 |
| Adnan Halal Foods Limited | Wholesale & retail | 2019 |
| Adnan House of Fashion Ltd | Wholesale & retail | 2026 |
| Adnan Property Ltd | Real estate | 2024 |
| Adnanlatif Limited | Transport & logistics | 2026 |
| Adnex Technology Ltd | Transport & logistics | 2025 |
| Adnoc AED Limited | Wholesale & retail | 2025 |
| Adnoc International UK Limited | Financial services | 2024 |
| Adnoc XRG Turkmenistan Limited | Financial services | 2025 |
| Adogees Limited | Health & social care | 2021 |
| Adolescent Wellbeing CIC | Education | 2024 |
| Adonai Property Services Ltd | Real estate | 2026 |
| Adonia Beauty Limited | Wholesale & retail | 2019 |
| Adora Collection Ltd | Wholesale & retail | 2024 |
| Adorable Delights Ltd | Wholesale & retail | 2018 |
| Adorable Services Limited | Wholesale & retail | 2019 |
| Adore Arts Ltd | Arts & recreation | 2020 |
| Adore Church | Other services | 1995 |
| Adored Pets Cuisine Ltd | Manufacturing | 2023 |
| Adorerobe Ltd | Wholesale & retail | 2026 |
| Adorfit Ltd | Wholesale & retail | 2025 |
| Adorn Services Limited | Transport & logistics | 2025 |
| Adorned Couches Limited | Wholesale & retail | 2025 |
| Ados Ltd | Information & communication | 2026 |