| Ahmadhassan Ltd | Wholesale & retail | 2024 |
| Ahmadiyya Muslim Medical Association UK Ltd | Health & social care | 2015 |
| Ahmadzai Holdings Ltd | Financial services | 2026 |
| Ahmadzai Local Ltd | Health & social care | 2026 |
| Ahmadzai Property Investment Ltd | Real estate | 2026 |
| Ahmed & Company Holdings Ltd | Financial services | 2026 |
| Ahmed Services Ltd | Construction | 2016 |
| Ahmj Limited | Information & communication | 2019 |
| AHR Holds Ltd | Financial services | 2024 |
| AHR Property Investment Ltd | Real estate | 2024 |
| AHR Property Services Ltd | Real estate | 2022 |
| Ahsan Scooters Clapham Limited | Wholesale & retail | 2018 |
| Ahsan Scooters Streatham Limited | Wholesale & retail | 2014 |
| Ahsan Scooters UK Limited | Wholesale & retail | 2019 |
| AHZ Consultants Ltd | Health & social care | 2024 |
| AI Proconstruct Ltd | Construction | 2025 |
| AI Rubani Properties Ltd | Real estate | 2019 |
| AIC & Co London Limited | Other services | 2021 |
| Aidans Plumbing and Heating Limited | Construction | 2016 |
| Aidenamisel Limited | Hospitality | 2025 |
| AIM Hold Ltd | Financial services | 2025 |
| AIM Investment Property Ltd | Real estate | 2025 |
| Ainsley and Brown Carpets Ltd | Wholesale & retail | 2023 |
| AIQ Investment Properties Ltd | Real estate | 2021 |
| Aisha Asmat Ltd | Health & social care | 2023 |
| Aisha Investments Ltd | Real estate | 2019 |
| Aisha Traders Ltd | Construction | 2019 |
| Aitchison Construction Limited | Construction | 2022 |
| Aitezaz Khan Automotive Ltd | Manufacturing | 2020 |
| AJ Apparel International Limited | Wholesale & retail | 2024 |
| AJ Floral Design Ltd | Wholesale & retail | 2024 |
| AJA Traders Ltd | Wholesale & retail | 2019 |
| Ajeys Limited | Real estate | 2026 |
| Ajwad Basil Medical Services Limited | Health & social care | 2013 |
| AK Distributions Group Ltd | Wholesale & retail | 2025 |
| AK Global Management Limited | Professional & scientific | 2018 |
| AK Used Auto Parts Ltd | Wholesale & retail | 2025 |
| Akds Construction Limited | Construction | 2017 |
| Akeb Ltd | Transport & logistics | 2014 |
| Akerp Solutions Ltd | Information & communication | 2009 |
| Akhtar Trading Ltd | Transport & logistics | 2025 |
| Akio Trading UK Limited | Wholesale & retail | 2024 |
| Akiogroup Ltd | Wholesale & retail | 2021 |
| Akmha PCN Ltd | Health & social care | 2021 |
| Akosfree Limited | Health & social care | 2020 |
| Akram Trading Ltd | Transport & logistics | 2018 |
| Aksg Services Ltd | Transport & logistics | 2023 |
| Aktiva Nurseries Limited | Health & social care | 2012 |
| AKZ PVT Ltd | Transport & logistics | 2023 |
| AL - Khyber Company Ltd | Wholesale & retail | 2026 |
| AL Abbas Services Ltd | Other services | 2016 |
| AL Ahram Taqa UK Ltd | Construction | 2024 |
| AL Amal Ltd | Wholesale & retail | 2026 |
| AL Amal United Ltd | Wholesale & retail | 2026 |
| AL Consultancy (London) Ltd | Professional & scientific | 2023 |
| AL Ehssan UK Limited | Administrative & support | 2024 |
| AL Ghazi Travel & Tourism Limited | Administrative & support | 2025 |
| AL Hawraa Engineering Consultants Limited | Professional & scientific | 2024 |
| AL Khaleej General Transport Limited | Transport & logistics | 2025 |
| AL Khayma Lounge Ltd | Hospitality | 2019 |
| AL Muheet AL Hadi Limited | Manufacturing | 2024 |
| AL Mursalin Consultants Ltd | Professional & scientific | 2010 |
| AL Mushtari General Trading Ltd | Wholesale & retail | 2025 |
| AL Naqee Constructions Ltd | Construction | 2025 |
| AL Rahman Holdings Ltd | Financial services | 2024 |
| AL Sabiqun Ltd | Education | 2025 |
| AL Sabiqun Services Ltd | Education | 2026 |
| AL Shalhoub for Transportation Ltd | Transport & logistics | 2025 |
| AL Tammar AL Alia Trading Company Ltd. | Wholesale & retail | 2024 |
| Al-Fekaiki Art Ltd | Arts & recreation | 2025 |
| Al-Shifa MS Ltd | Health & social care | 2013 |
| Al-Tammar Ltd | Construction | 2024 |
| Alam Alreef General Trading Ltd | Wholesale & retail | 2025 |
| Alan Barron Limited | Construction | 2013 |
| Alastair Young Marketing Consultancy Ltd | Information & communication | 2014 |
| ALB Motors Ltd | Wholesale & retail | 2022 |
| Albconnect Ltd | Professional & scientific | 2023 |
| Albert Matei Ltd | Construction | 2014 |
| Albert's Kitchen Ltd | Hospitality | 2023 |
| Alborz Fresh Fruits Trading Ltd | Wholesale & retail | 2026 |
| Alecsf Management Services Ltd | Construction | 2020 |
| Aleks P & Co Ltd | Construction | 2024 |
| Alex P Construction Limited | Construction | 2019 |
| Alex Shoe Repairs Ltd | Other services | 2020 |
| Alfa S Construction Ltd | Construction | 2026 |
| Alfazal Cabs Ltd | Transport & logistics | 2026 |
| Alfie George Ethical Solutions Ltd | Water & waste | 2023 |
| Algernas Printing & Documents Clearing Services UK Limited | Professional & scientific | 2024 |
| Alhaleem Limited | Wholesale & retail | 2026 |
| ALI & CAN Builders Ltd | Construction | 2020 |
| ALI & SON Trading Ltd | Transport & logistics | 2025 |
| ALI Baba Garage Ltd | Wholesale & retail | 2026 |
| Alice K Estates Limited | Real estate | 2025 |
| Alico Accountancy Ltd | Professional & scientific | 2025 |
| Alico Consultancy Ltd | Other services | 2021 |
| Alico Traders Ltd | Wholesale & retail | 2024 |
| Alif Technologies Consultants Ltd | Information & communication | 2026 |
| Aliganto Ltd | Wholesale & retail | 2018 |
| Aligned Business Coach Ltd | Information & communication | 2025 |
| Alitrans Pro Ltd | Transport & logistics | 2023 |