| Akiiki General Services Ltd | Wholesale & retail | 2023 |
| Akim Limited | Real estate | 2018 |
| Akita Property Management Ltd | Real estate | 2012 |
| AKM Investment Properties Ltd | Real estate | 2018 |
| AKN Jewellery Ltd | Wholesale & retail | 2016 |
| AKO Plumbing and Heating Limited | Construction | 2018 |
| Akobet Limited | Real estate | 2026 |
| AKR Business Consulting Limited | Wholesale & retail | 2023 |
| AKR Import Export Ltd | Wholesale & retail | 2026 |
| Akshar Food PVT Ltd | Hospitality | 2025 |
| Akshayan & Ayshana Ltd | Real estate | 2022 |
| Akslop Ltd | Transport & logistics | 2013 |
| Akson Logistics Ltd | Transport & logistics | 2026 |
| AKT Trans Ltd | Transport & logistics | 2024 |
| Aktar Property Limited | Real estate | 2024 |
| Aktiv Consultancy Ltd | Professional & scientific | 2021 |
| Akurt Trans Ltd | Wholesale & retail | 2025 |
| AKW Consultancy Limited | Professional & scientific | 2017 |
| Akwa Irrigation Services Limited | Construction | 2010 |
| AL Barakah MK Foods Ltd | Wholesale & retail | 2024 |
| AL Ehsan Limited | Education | 2017 |
| AL Fikr Welfare CIC | Health & social care | 2025 |
| AL Hateem Travels (PVT) Ltd | Administrative & support | 2024 |
| AL Marhubi Corporation Limited | Transport & logistics | 2018 |
| AL Sultan Trading UK Ltd | Wholesale & retail | 2019 |
| AL Taakhi UK Ltd | Wholesale & retail | 2021 |
| AL Tekia Ltd | Hospitality | 2025 |
| AL Ventures Global Ltd | Administrative & support | 2026 |
| Al&Mc Limited Partnership | | 2008 |
| Al-Amoud Solutions Ltd | Administrative & support | 2025 |
| Al-Asr Holdings Ltd | Financial services | 2024 |
| Al-Awqaf UK Limited | Health & social care | 2025 |
| Al-Haitham Ltd | Professional & scientific | 2025 |
| Al-Qaim Motors Group Ltd | Wholesale & retail | 2025 |
| Alaa Spice Limited | Hospitality | 2023 |
| Alabaster Coaching Ltd | Education | 2023 |
| Alabaster Craft Limited | Manufacturing | 2021 |
| Alalas Consulting Limited | Professional & scientific | 2023 |
| Alali Trading Ltd | Wholesale & retail | 2024 |
| Alam and SON Investa Hub Ltd | Real estate | 2024 |
| Alam Properties (MK) Ltd | Real estate | 2025 |
| Alamode Properties Limited | Construction | 2016 |
| Alan B Jones and Associates Limited | Professional & scientific | 2009 |
| Alan Batley Consulting Limited | Professional & scientific | 2010 |
| Alan Construction Ltd | Other services | 2016 |
| Alan Ellis Financial Services Limited | Professional & scientific | 2017 |
| Alan Rodgers Limited | Construction | 1983 |
| Alantas Limited | Information & communication | 2011 |
| Alara Stays Ltd | Hospitality | 2026 |
| Alatus Construction Ltd | Construction | 2017 |
| ALB Autos MK Ltd | Wholesale & retail | 2024 |
| ALB Services Group Limited | Administrative & support | 2026 |
| Alba Engineering Limited | Manufacturing | 1990 |
| Albadrone Ltd | Other services | 2024 |
| Albb Consultancy Ltd | Other services | 2019 |
| Albermarle Homes Limited | Construction | 2005 |
| Albert Aviation Services Ltd | Professional & scientific | 2024 |
| Alberta Rose Taphouse Ltd | Hospitality | 2024 |
| Albion Crest Construction Ltd | Construction | 2026 |
| Albion Land (2012) Limited | Construction | 2012 |
| Albion Land (2013) Limited | Construction | 2012 |
| Albion Land (MK) Limited | Construction | 2003 |
| Albion Land Asset Management Limited | Construction | 2015 |
| Albion Land Three Limited | Construction | 2016 |
| Albion Land Two Limited | Professional & scientific | 2007 |
| Albion Stores Ltd | Wholesale & retail | 2024 |
| Albion Treasures Ltd | Wholesale & retail | 2025 |
| Albox Services Limited | Transport & logistics | 2015 |
| Alburj Investments Ltd | Financial services | 2019 |
| Alcedo Associates Ltd | Professional & scientific | 2019 |
| Alchemise Investments Ltd | Real estate | 2026 |
| Alchemy Sport and Beauty Limited | Other services | 2013 |
| Alcita Limited | Real estate | 2011 |
| ALD Property Management Ltd | Households | 2024 |
| Aldarton Limited | Professional & scientific | 2009 |
| Aldarton Luxury Homes Limited | Hospitality | 2023 |
| Aldbury Associates Limited | Administrative & support | 1997 |
| Aldbury Directors Limited | Professional & scientific | 1996 |
| Aldbury Group Limited | Administrative & support | 2015 |
| Aldbury Homes (Eagle Farm) Ltd | Construction | 2018 |
| Aldbury Homes (Lockington) Ltd | Construction | 2019 |
| Aldbury Homes (Maulden) Ltd | Construction | 2021 |
| Aldbury Homes (Northill) Ltd | Construction | 2019 |
| Aldbury Homes (Simpson) Ltd | Real estate | 2018 |
| Aldbury Homes (Slapton) Ltd | Construction | 2018 |
| Aldbury Homes (YG) Ltd | Construction | 2022 |
| Aldbury Homes Ltd | Construction | 2014 |
| Aldbury Limited | Professional & scientific | 2004 |
| Aldbury Nominees Limited | Administrative & support | 2015 |
| Aldbury Secretaries Limited | Professional & scientific | 1996 |
| Alders Farm Enterprises Limited | Wholesale & retail | 2017 |
| Aldersgate Social Care Ltd | Health & social care | 2018 |
| Aldkew Limited | Construction | 2009 |
| Aldo Ambulance and Medical Services Ltd | Administrative & support | 2016 |
| Aldridge Professional Services Limited | Administrative & support | 2017 |
| Alegon Limited | Professional & scientific | 2013 |
| Aleifr Holdings Limited | Financial services | 2026 |
| Aleks Motorman Engineering Ltd | Extraterritorial | 2024 |
| Alemare Solutions Limited | Professional & scientific | 2006 |
| Aleron Construction Limited | Construction | 2013 |