| Amaarah Developments Ltd | Construction | 2021 |
| Amalthea Property Holdings Limited | Real estate | 2021 |
| Ambe Hair and Beauty Limited | Other services | 2019 |
| Amber Accident Claims Management Ltd | Administrative & support | 2024 |
| Amberworks Ltd | Information & communication | 2024 |
| Ambika’S Boutique Ltd | Wholesale & retail | 2019 |
| AMC Supplies Ltd | Wholesale & retail | 2025 |
| Amdi Bere Limited | Wholesale & retail | 2018 |
| Ameen Consulting ( London ) Ltd | Health & social care | 2025 |
| Amen Corner Services Ltd | Health & social care | 2022 |
| Amex Housing Solutions Ltd | Other services | 2020 |
| AMH Traders Ltd | Wholesale & retail | 2025 |
| Amigo Software Ltd | Information & communication | 2004 |
| Amik Property International Ltd | Real estate | 2009 |
| Amira Construction Consultancy Limited | Construction | 2014 |
| Amix Property Limited | Real estate | 2014 |
| AMK Restaurant Ltd | Hospitality | 2024 |
| Ammajee Trust Ltd | Other services | 2024 |
| Amorphous Design Ltd | Professional & scientific | 2012 |
| Amrutha Top Co Ltd | Hospitality | 2026 |
| AMS Investment Property Ltd | Real estate | 2020 |
| AMU Car Hire Ltd | Other services | 2025 |
| AMU Global Trading Ltd | Wholesale & retail | 2023 |
| AMZ School of Motoring Ltd | Education | 2026 |
| Ana's Cafe UK Ltd | Hospitality | 2015 |
| Anchortek Ltd | Information & communication | 2016 |
| Ancost Ltd | Construction | 2016 |
| Andi Qerkezi Limited | Construction | 2023 |
| Andrada Cleaning Ltd | Other services | 2009 |
| Andrea Prieto Aesthetics Limited | Other services | 2022 |
| Andrejsvilcans Limited | Transport & logistics | 2018 |
| Andrew Donovan T/A Donovan's Coffee and Bakehouse Ltd. | Hospitality | 2020 |
| Aneth Enterprise Ltd | Manufacturing | 2019 |
| Angeline Nails & Beauty Ltd | Other services | 2016 |
| Angels Spices Ltd | Wholesale & retail | 2018 |
| Anglopak Building Services Limited | Construction | 2019 |
| Angmic Limited | Transport & logistics | 2017 |
| Anicham Ltd | Public administration | 2025 |
| Anjuvig Limited | Wholesale & retail | 2016 |
| Ankre Limited | Wholesale & retail | 2025 |
| Anna Traders Ltd | Administrative & support | 2020 |
| Annie GG Limited | Health & social care | 2022 |
| Annrosi Limited | Professional & scientific | 2026 |
| Anomalous Films Limited | Information & communication | 2019 |
| Anomé Ltd | Manufacturing | 2022 |
| ANR Solutions Ltd | Professional & scientific | 2018 |
| ANS Contractors Ltd | Construction | 2019 |
| Antares Concepts Ltd | Manufacturing | 2011 |
| Antasal Limited | Administrative & support | 2012 |
| Anthony 126 Ltd | Transport & logistics | 2018 |
| Anything YUH Like Catering Ltd | Hospitality | 2026 |
| AOG Ready Ltd | Wholesale & retail | 2023 |
| AOG Recruitment Ltd | Administrative & support | 2025 |
| Aood Ltd | Health & social care | 2023 |
| Aoprosolutions Limited | Professional & scientific | 2026 |
| Apat Services Ltd | Transport & logistics | 2018 |
| Apek Edge Ltd | Administrative & support | 2025 |
| Apex Media Network Limited | Wholesale & retail | 2025 |
| Apex Stone Renovation Company Ltd | Administrative & support | 2021 |
| Apex Store Group Limited | Wholesale & retail | 2019 |
| Apex Technoverse UK Ltd | Information & communication | 2025 |
| Apid Limited | Wholesale & retail | 2013 |
| Apogee Construction Services Ltd | Construction | 2014 |
| Apollo Steels Limited | Extraterritorial | 1872 |
| Appliance Installation Services Ltd | Construction | 2023 |
| Approved Multi Services Ltd | Other services | 2016 |
| Approved Technology Solutions Limited | Information & communication | 2018 |
| AQ Food Supplies Ltd | Wholesale & retail | 2021 |
| Aquamal Limited | Real estate | 2020 |
| Aquarius Construction Ltd | Construction | 2025 |
| Aquilofts Ltd | Professional & scientific | 2025 |
| AR Briyani Ltd | Hospitality | 2023 |
| AR Inc Ltd | Real estate | 2021 |
| ARA & ARU Limited | Wholesale & retail | 2023 |
| Araba Grace House Ltd | Real estate | 2023 |
| Arbormark Business Services Limited | Professional & scientific | 2026 |
| ARC & Aura Ltd | Wholesale & retail | 2025 |
| ARC Trainning Group CIC | Education | 2020 |
| Arcio Ltd | Administrative & support | 2026 |
| Arda Electrical Ltd | Energy | 2014 |
| Ardec Ltd | Construction | 2024 |
| Ardeleanu Mihail 1170 Limited | Transport & logistics | 2015 |
| Area 4 Ltd | Education | 2025 |
| Areca Activewear Ltd | Wholesale & retail | 2019 |
| Arekkz Gaming Ltd | Information & communication | 2015 |
| Arfush Nexus Limited | Information & communication | 2024 |
| ARI Car Services Ltd | Wholesale & retail | 2017 |
| Arif Rashid Cricket Coaching Ltd | Arts & recreation | 2020 |
| Arima Developments Ltd | Real estate | 2022 |
| Arima Network Ltd | Real estate | 2019 |
| Arinna Solar Limited | Energy | 2019 |
| Aristrat & Company Ltd | Information & communication | 2019 |
| Arivin Ltd | Real estate | 2017 |
| Arizo Dresses Ltd | Wholesale & retail | 2026 |
| Arla Estates Ltd | Professional & scientific | 2026 |
| Arotechcivils Ltd | Construction | 2021 |
| Aroyb-Tech Ltd | Information & communication | 2025 |
| Arraheem World Ltd | Wholesale & retail | 2022 |
| Arramton Infotech Limited | Information & communication | 2024 |
| ARS International Ltd | Wholesale & retail | 2020 |