| AE GAS Limited | Construction | 2024 |
| AEC Holdings & Systems Ltd | Professional & scientific | 2026 |
| AEE West Midland Limited | Real estate | 2018 |
| AEG Testing Ltd | Information & communication | 2022 |
| Aequitas Wealth Management Limited | Professional & scientific | 2021 |
| Aertrola Limited | Extraterritorial | 2020 |
| Aesh Traders Ltd | Wholesale & retail | 2025 |
| Aesthetics & Medical Services Limited | Health & social care | 2019 |
| Aesthetics by Renu Ltd | Other services | 2025 |
| Aesthetics Lounge Birmingham Ltd | Other services | 2023 |
| Aeyway Limited | Wholesale & retail | 2025 |
| AF Equestrian Ltd | Wholesale & retail | 2021 |
| AFA Care Ltd | Health & social care | 2025 |
| AFA Coaches Ltd | Transport & logistics | 2024 |
| AFA Global Trade Link Ltd | Wholesale & retail | 2025 |
| AFB Delivery Ltd | Transport & logistics | 2024 |
| Affinity Childrens Care Limited | Health & social care | 2022 |
| Affinity Plus Ltd | Extraterritorial | 2023 |
| Affitto Property Management Limited | Real estate | 2022 |
| Affodo Limited | Wholesale & retail | 2024 |
| Affordable Airfares UK Ltd | Wholesale & retail | 2024 |
| Affordable Beverages Ltd | Hospitality | 2015 |
| Affordable Cleaning and Supplies Ltd | Administrative & support | 2009 |
| Affordable Mezzanine Ltd | Construction | 2021 |
| AFG Capital Holdings Ltd | Financial services | 2026 |
| AFG Fruit & VEG Limited | Wholesale & retail | 2022 |
| AFG Motor Services Limited | Manufacturing | 2011 |
| Afghan Community and Welfare Centre | Information & communication | 2007 |
| Afghan Dera Restaurant Ltd | Hospitality | 2026 |
| Afghan Takeaway Ltd | Hospitality | 2026 |
| Afif UK Limited | Wholesale & retail | 2011 |
| Afilogi Ltd | Transport & logistics | 2026 |
| Afisec Ltd | Information & communication | 2025 |
| Afiyah Boutique Ltd | Wholesale & retail | 2024 |
| Afkbhx Ltd | Hospitality | 2026 |
| AFM Trustees Limited | Administrative & support | 2019 |
| AFN Nicula Ltd | Transport & logistics | 2023 |
| Afoakwa Healthcare Ltd | Health & social care | 2022 |
| Afoakwa Market Ltd | Hospitality | 2020 |
| AFP Collection Limited | Wholesale & retail | 2012 |
| AFR Capital Ltd | Financial services | 2020 |
| African & Carribean Groceries Ltd | Wholesale & retail | 2021 |
| African Researchers Network CIC | Information & communication | 2021 |
| African Trade & Labelling CIC | Professional & scientific | 2025 |
| Africann Carribean Groceries Limited | Wholesale & retail | 2025 |
| Afrikana Birmingham Ltd | Hospitality | 2019 |
| Afrikana Group Limited | Hospitality | 2019 |
| Afrikana Walsall Limited | Hospitality | 2024 |
| Afro Trap Media Limited | Hospitality | 2023 |
| Afrocean Limited | Wholesale & retail | 2023 |
| Afroeat Ltd | Hospitality | 2023 |
| Afroharvest Foods Ltd | Manufacturing | 2026 |
| Afzals Investment Company Ltd | Real estate | 2019 |
| AG Clothing Retail Ltd | Wholesale & retail | 2025 |
| AG Super Limited | Wholesale & retail | 2017 |
| AG Trans Ltd | Transport & logistics | 2022 |
| AG5 Academy Limited | Education | 2023 |
| Agarwal Property Company Limited | Real estate | 2017 |
| Agile Pioneers Ltd | Administrative & support | 2025 |
| AGK Events Ltd | Hospitality | 2023 |
| AGL Accountancy Ltd | Professional & scientific | 2017 |
| AGM Health Care Services Limited | Public administration | 2022 |
| AGM Holdco Ltd | Financial services | 2021 |
| Agnus Ltd. | Wholesale & retail | 2014 |
| Agree Mortgage Solutions Ltd | Financial services | 2022 |
| Agrileader Limited | Information & communication | 2023 |
| Agsoundz Ltd | Information & communication | 2025 |
| Agvc Ltd | Administrative & support | 2019 |
| AGX Traders UK Limited | Wholesale & retail | 2015 |
| Agyapa Ltd | Administrative & support | 2022 |
| Agyengo's Drylining Limited | Construction | 2022 |
| AH & OS Ltd | Professional & scientific | 2022 |
| AH Freeston Limited | Real estate | 2024 |
| AH Latelow Limited | Construction | 2024 |
| AH the Fields Ltd | Construction | 2024 |
| AHH Pharma Ltd | Health & social care | 2020 |
| AHK Group Limited | Manufacturing | 2017 |
| AHK Living Ltd | Wholesale & retail | 2024 |
| AHM E-Commerce Ltd | Wholesale & retail | 2020 |
| AHM Medical Services Ltd | Health & social care | 2016 |
| Ahmad Urology Services Limited | Health & social care | 2018 |
| Ahmed ALI Traders Ltd | Wholesale & retail | 2025 |
| Ahmed Food Company Limited | Hospitality | 2025 |
| AHW Property Managment Ltd | Real estate | 2024 |
| AI Investment Projects Ltd | Construction | 2024 |
| AI Worldwide Ltd | Wholesale & retail | 2025 |
| AIA Aiyra Ibrahim Alliance Ltd | Wholesale & retail | 2024 |
| AIA Fabrications Ltd | Manufacturing | 2022 |
| Aidan a Holdings Ltd | Financial services | 2024 |
| AIF Group Limited | Real estate | 2024 |
| AIF Media Limited | Information & communication | 2018 |
| AIM Food Group Limited | Hospitality | 2025 |
| AIM Logistic Ltd | Transport & logistics | 2025 |
| AIMMS4U Ltd | Professional & scientific | 2020 |
| Aims Plastic UK Ltd | Manufacturing | 2025 |
| Aina Tech Limited | Information & communication | 2013 |
| Ainsworth Country Holdings Ltd | Financial services | 2020 |
| Aiology Limited | Wholesale & retail | 2023 |
| AIP Architects Limited | Professional & scientific | 2013 |
| Air Control & Development Limited | Administrative & support | 1994 |