| Akramzada Trading Ltd. | Real estate | 2012 |
| Akramzada UK Limited | Wholesale & retail | 2012 |
| Akray Ltd | Wholesale & retail | 2025 |
| AKS Refrigeration Limited | Wholesale & retail | 2015 |
| Aksh Enterprise Ltd | Administrative & support | 2024 |
| Akshar Capital Limited | Professional & scientific | 2021 |
| Akshar Projects Limited | Construction | 2024 |
| Aksharam Trading Ltd | Wholesale & retail | 2025 |
| Akshaya 111 Ltd | Other services | 2021 |
| Akssan Ltd | Real estate | 2017 |
| AKT Holdings Limited | Hospitality | 2025 |
| Akuk Enterprise Limited | Wholesale & retail | 2023 |
| AKV Garages (UK) Limited | Wholesale & retail | 2005 |
| AKV Services Ltd | Wholesale & retail | 2016 |
| AKY Motors Limited | Wholesale & retail | 2026 |
| AL Amiri General Trading Company Ltd | Wholesale & retail | 2019 |
| AL Belal Ltd | Wholesale & retail | 2021 |
| AL Budruhsha Limited | Wholesale & retail | 2017 |
| AL Fadhil Trading International UK Ltd | Wholesale & retail | 2021 |
| AL Kaaby Ltd | Real estate | 2022 |
| AL Maab Group Ltd | Administrative & support | 2023 |
| AL Mizan AL Dhahabi Shipping L.L.C Limited | Transport & logistics | 2024 |
| AL Seafood Ltd | Wholesale & retail | 2026 |
| Al-Ehsan Trust Limited | Administrative & support | 2001 |
| Al-Haqq Store Ltd | Wholesale & retail | 2025 |
| Al-Haraka Al-Hussainiya Ltd | Health & social care | 2021 |
| Al-Haram Foods Limited | Wholesale & retail | 2025 |
| Al-Hyderabadi Biryani & Grills Ltd | Hospitality | 2023 |
| Al-Jawad Greenfield Ltd | Real estate | 2026 |
| Al-Pasha Trading Ltd | Wholesale & retail | 2009 |
| Al-Sayed Jewellery Limited | Wholesale & retail | 2017 |
| Aladba Trading Company Ltd | Wholesale & retail | 2022 |
| Alam Financial Ltd | Construction | 2018 |
| Alan Best Contracts Limited | Construction | 1949 |
| Alanah Trading Ltd | Wholesale & retail | 2015 |
| Albasrah Eurolane Limited | Professional & scientific | 2008 |
| Albion Crest Development Ltd | Construction | 2025 |
| Alcj & Co Ltd | Professional & scientific | 2021 |
| Alderforce Holdings (2) Limited | Financial services | 2023 |
| Alderforce Holdings Limited | Financial services | 2019 |
| Alderforce Limited | Hospitality | 2003 |
| Alderforce North Limited | Hospitality | 2010 |
| Alderforce SC Limited | Hospitality | 2014 |
| Aldin Properties Ltd | Households | 2022 |
| Aldton Park Financial Services Limited | Financial services | 2019 |
| Aldton Park Holdings Ltd | Financial services | 2025 |
| Alerose Ltd | Wholesale & retail | 2025 |
| Alex ET Noire Limited | Wholesale & retail | 2023 |
| Alex Transport Driven Services Ltd | Transport & logistics | 2023 |
| Alexa Beauty and Aesthetics Ltd | Education | 2025 |
| Alexander Chapman Ltd | Administrative & support | 2015 |
| Alexander REY Ltd | Transport & logistics | 2020 |
| Alexandra’S Catering Ltd | Hospitality | 2025 |
| Alexandru-Turcitu Ltd | Administrative & support | 2026 |
| Alexoos Ltd | Administrative & support | 2023 |
| Alfa Nero Limited | Administrative & support | 2021 |
| Alfadhel Trading Group Limited | Construction | 2019 |
| Alfadhl Holdings Ltd | Real estate | 2017 |
| Alfadhl Properties Ltd | Real estate | 2022 |
| Alfawoodflooring Limited | Manufacturing | 2024 |
| Alfresco Cafes Limited | Extraterritorial | 2006 |
| ALI & 3 Sons Ltd | Construction | 2023 |
| ALI VE Ogullari Limited | Hospitality | 2026 |
| Alia Johar Limited | Health & social care | 2013 |
| Align Orthodontic Property Ltd | Real estate | 2023 |
| Alindra Partners Ltd | Health & social care | 2025 |
| Alip Design & Build Limited | Construction | 2019 |
| Aliz Claims Ltd | Administrative & support | 2019 |
| Aliza Solutions Ltd | Information & communication | 2025 |
| Alizai Taxi Ltd | Transport & logistics | 2026 |
| Aljradat Van Limited | Wholesale & retail | 2025 |
| Aljradat Van Sale Limited | Wholesale & retail | 2026 |
| Alka Financial Services Limited | Financial services | 2004 |
| Alkebu-Lan Community CIC | Education | 2023 |
| Alket Dara Group Ltd | Construction | 2025 |
| Alkhair Estates Ltd | Real estate | 2025 |
| ALL in Property Ltd | Real estate | 2026 |
| ALL IS Well Properties Ltd. | Real estate | 2017 |
| ALL Play Ventures Ltd | Education | 2024 |
| ALL Sports London Limited | Arts & recreation | 2013 |
| ALL Things General Ltd | Wholesale & retail | 2020 |
| ALL1 Clothing Ltd | Wholesale & retail | 2018 |
| Allan Brunneis Property Limited | Real estate | 2017 |
| Alldayhomeimprovments Ltd | Professional & scientific | 2026 |
| Alldayinc. Ltd | Manufacturing | 2025 |
| Allied Computer UK Ltd | Information & communication | 2022 |
| Allied Consult Property Limited | Construction | 2021 |
| Allied Consulting Services Ltd | Administrative & support | 2014 |
| Allied Property (UK) Ltd | Other services | 2013 |
| Allison House Thornaby Limited | Health & social care | 2019 |
| Allonby 15 Ltd | Real estate | 2025 |
| Allpex Ltd | Wholesale & retail | 1990 |
| Alltech HTC Ltd | Construction | 2015 |
| ALM RAH Ltd | Wholesale & retail | 2026 |
| Alma Fruit & VEG Limited | Wholesale & retail | 2009 |
| Alma Wembley Limited | Construction | 2019 |
| Almahdy Limited | Real estate | 2023 |
| Almassa Gold Clinic Ltd | Health & social care | 2022 |
| Almedia I.T. Services Ltd | Information & communication | 1999 |
| Almeshreq Limited | Wholesale & retail | 2018 |