| Aeaccidentrepaircentre Ltd | Wholesale & retail | 2025 |
| AEC Transport & Tradings Ltd | Wholesale & retail | 2019 |
| Aedifice Holdings Limited | Professional & scientific | 2000 |
| Aedifice Limited | Construction | 2000 |
| Aedifice Partnership Limited Liability Partnership | | 2008 |
| Aeean Limited | Construction | 2022 |
| Aegis Contractors Ltd | Construction | 2024 |
| Aegis Facilities Ltd | Construction | 2022 |
| Aegis Group of Companies Limited | Financial services | 2018 |
| Aegis Invest Ltd | Real estate | 2025 |
| Aegis Parking Control Ltd | Administrative & support | 2022 |
| Aegis Protection Security Ltd | Administrative & support | 2025 |
| Aegis Real Estate Ltd | Real estate | 2025 |
| Aegis Security Services Ltd | Administrative & support | 2022 |
| Aegis Support Services Limited | Administrative & support | 2021 |
| Aegis Training 01 Ltd | Education | 2023 |
| Aegis Training 02 Ltd | Education | 2023 |
| Aegis Training 03 Ltd | Education | 2023 |
| Aegis Training 04 Ltd | Education | 2023 |
| Aegis Training 05 Ltd | Education | 2023 |
| Aegis Training Services Ltd | Education | 2021 |
| AEL Mots Ltd | Wholesale & retail | 2024 |
| Aeltec Limited | Manufacturing | 2015 |
| AEM Drywall Ltd | Construction | 2015 |
| Aeri Drop Limited | Transport & logistics | 2025 |
| Aero Invest (Jersey) | | 2006 |
| Aero Travel UK Ltd | Administrative & support | 2018 |
| Aerolink Solution Ltd | Transport & logistics | 2024 |
| Aeroplay Education Ltd | Education | 2025 |
| Aesthemed Supplies Ltd | Wholesale & retail | 2026 |
| Aesthetic's Secrets Ltd | Wholesale & retail | 2025 |
| Aesthetics by Anna Ltd | Administrative & support | 2026 |
| Aesthetics by FKA Ltd | Administrative & support | 2021 |
| Aesthetics Central Beauty Ltd | Other services | 2024 |
| Aesthetics Central Limited | Other services | 2023 |
| Aesthetics Central Training Academy Ltd | Other services | 2025 |
| Aesthetika Beauty Ltd | Other services | 2025 |
| Aetos Health Care Ltd | Health & social care | 2018 |
| Aevum Lifts Services Ltd | Manufacturing | 2021 |
| AEY Materials Ltd | Wholesale & retail | 2025 |
| AF Goods Ltd | Wholesale & retail | 2024 |
| AF Luxe Drive Ltd | Transport & logistics | 2026 |
| AF Merchandise Ltd | Manufacturing | 2021 |
| AF Residential Limited | Households | 2018 |
| Af&Z Co(Uk) Ltd | Health & social care | 2011 |
| Af&Z Property Ltd | Real estate | 2026 |
| AFA Autos Ltd | Wholesale & retail | 2024 |
| AFB Team Ltd | Construction | 2018 |
| AFF Travel NET Ltd | Administrative & support | 2011 |
| Affinity Merchandising Limited | Wholesale & retail | 2024 |
| Affinity Tigris Ltd | Construction | 2021 |
| Affluence Holistic Wellness Ltd | Education | 2024 |
| Afford-Eaze Limited | Manufacturing | 2022 |
| Affordable Companies Limited | Manufacturing | 2015 |
| Affordable Housing Services Ltd | Real estate | 2021 |
| AFG Superstore Limited | Wholesale & retail | 2017 |
| Afgarad Support Services Ltd | Health & social care | 2009 |
| Afghan Luton Ltd | Wholesale & retail | 2023 |
| Afghan Saffron Ltd | Professional & scientific | 2018 |
| Afghanistan Rugs and Carpets Center Limited | Wholesale & retail | 2015 |
| AFH Enterprises Ltd | Wholesale & retail | 2026 |
| AFI Beauty Clinic Ltd | Other services | 2025 |
| Afort Consultants Ltd | Professional & scientific | 2015 |
| Afqar Transport Ltd | Transport & logistics | 2022 |
| AFR Umbrella Services Ltd | Real estate | 2017 |
| Afraprotrans Ltd | Transport & logistics | 2026 |
| Afraz Luton Limited | Hospitality | 2020 |
| Afresh Global Limited | Administrative & support | 2021 |
| Afri Generics Limited | Wholesale & retail | 2023 |
| Africa Transformation Centres Foundation Limited | Education | 2020 |
| Africa UK Media Ltd | Information & communication | 2025 |
| African Caribbean Community Development Forum Ltd | Education | 2003 |
| African Indigo Ltd | Extraterritorial | 2020 |
| African Resources Venture Limited | Financial services | 2020 |
| Afridi Cars Ltd | Administrative & support | 2025 |
| Afridi Mobile Ltd | Wholesale & retail | 2017 |
| Afrikiko Spice Limited | Hospitality | 2024 |
| Afrim Ramaj Ltd | Construction | 2019 |
| Afro Hair & Beauty Zone Ltd | Wholesale & retail | 2021 |
| Afro World Midland Ltd | Wholesale & retail | 2025 |
| Afsar Consultancy Ltd | Administrative & support | 2016 |
| Afshan Beauty Salon Ltd | Other services | 2024 |
| Aftab a Bala PVT Ltd | Wholesale & retail | 2025 |
| AFTAB29 and Co Limited | Wholesale & retail | 2019 |
| After Motion Digital Ltd | Information & communication | 2026 |
| Aftercrete Constructional Engineering Co. Limited | Construction | 1963 |
| AFU Education UK Limited | Administrative & support | 2026 |
| Afy's Chick a Rice Ltd | Hospitality | 2025 |
| Afya Njema Ltd | Health & social care | 2024 |
| AG Business Serv Ltd | Transport & logistics | 2025 |
| AG Consultants PVT Limited | Information & communication | 2015 |
| AG Glam Limited | Wholesale & retail | 2025 |
| AG-K9 Security Limited | Other services | 2019 |
| AG2020 Limited | Construction | 2025 |
| AGA Serv Ltd | Construction | 2026 |
| Agape Superbe Care Ltd | Health & social care | 2017 |
| Agayou Limited | Transport & logistics | 2018 |
| AGB Motors Ltd | Transport & logistics | 2023 |
| Agba Rail Limited | Transport & logistics | 2014 |
| Agbonson Holdings Ltd | Health & social care | 2018 |