| Aesthetics & Skin Care Clinic Ltd | Health & social care | 2023 |
| Aesthetics by Charlie Emily Ltd | Other services | 2025 |
| Aesthetics by FKZ Ltd | Other services | 2024 |
| Aesthetics by Gabrielle Ltd | Other services | 2023 |
| Aesthetics by Wiki Ltd | Other services | 2020 |
| Aesthetics Guru Limited | Health & social care | 2016 |
| Aesthetics Suite Academy Ltd | Education | 2023 |
| Aesthetics Tina Ltd | Other services | 2025 |
| Aesthetique Beauty Room Ltd | Other services | 2025 |
| Aesthetix Healthcare Ltd | Health & social care | 2019 |
| Aesthetix Limited | Health & social care | 2006 |
| Aestrea Ltd | Construction | 2026 |
| Aestrom Limited | Real estate | 2012 |
| Aestrom OTH Limited | Construction | 2019 |
| AET & Co Estates Ltd | Real estate | 2017 |
| Aetech Limited | Professional & scientific | 2000 |
| Aethel Care Homes Ltd | Health & social care | 1999 |
| Aethelgard Finance Ltd | Information & communication | 2026 |
| Aether Collective Commerce Nexus Ltd | Wholesale & retail | 2025 |
| Aether Herbals Ltd | Wholesale & retail | 2025 |
| Aether Summit Global Investments Ltd | Extraterritorial | 2025 |
| Aether Ventures Ltd | Financial services | 2025 |
| Aetherhelix Games Ltd | Information & communication | 2026 |
| Aetherion Technologies Limited | Information & communication | 2025 |
| Aetheris Cosmetics Limited | Wholesale & retail | 2025 |
| Aethernimbus Ltd | Information & communication | 2025 |
| AEU Properties Ltd | Real estate | 2021 |
| Aevion Limited | Wholesale & retail | 2025 |
| Aevum Care Limited | Health & social care | 2025 |
| AEW Architects & Designers Ltd | Professional & scientific | 1992 |
| AEW Architects Limited | Extraterritorial | 2010 |
| AEW Management Limited | Extraterritorial | 2012 |
| AEW Ventures Limited | Financial services | 2020 |
| Aexir Digital Ltd | Information & communication | 2023 |
| AEY Corp Limited | Real estate | 2020 |
| AEY Group Limited | Wholesale & retail | 2019 |
| AEY Investco Limited | Financial services | 2020 |
| AEY Investments Ltd | Construction | 2018 |
| AEY Tuning Ltd | Wholesale & retail | 2019 |
| AF Advisory Ltd | Information & communication | 2025 |
| AF Carpets & Floorings Ltd | Wholesale & retail | 2023 |
| AF Grill Limited | Hospitality | 2026 |
| AF Mini Market Ltd | Wholesale & retail | 2026 |
| AF Networks Limited | Information & communication | 2017 |
| AF NW Estates Limited | Real estate | 2025 |
| AF Store Limited | Wholesale & retail | 2021 |
| AF UK Properties Ltd | Real estate | 2020 |
| AF100 Limited | Real estate | 2021 |
| AFA Deliveries Ltd | Transport & logistics | 2022 |
| AFA for Investment Ltd | Other services | 2022 |
| AFA Group Ltd | Professional & scientific | 2015 |
| AFA Insolvency Limited | Other services | 2020 |
| AFA Productions Ltd | Information & communication | 2019 |
| AFA Trade Limited | Real estate | 2024 |
| AFA Travel Ltd | Other services | 2017 |
| Afaak Traders Ltd | Wholesale & retail | 2019 |
| Afak | Education | 2015 |
| Afak Medical Pharma Management Ltd | Wholesale & retail | 2025 |
| Afam Ltd | Other services | 2014 |
| Afan Valley Limited | Hospitality | 2016 |
| Afaq Al-Majd Al-Hadith Ltd | Wholesale & retail | 2026 |
| Afaq Al-Wilayah for Trading and Contracting Ltd | Construction | 2025 |
| Afaq Algharbyah International for Trading Co Ltd | Wholesale & retail | 2025 |
| Afaq for Trading Ltd | Wholesale & retail | 2023 |
| Afaq Media Ltd | Professional & scientific | 2025 |
| Afar Limited | Hospitality | 2019 |
| AFB Consultancy Ltd | Information & communication | 2009 |
| AFC Chorlton Ltd | Hospitality | 2026 |
| AFC Property Services Ltd | Construction | 2016 |
| AFD Foods Ltd | Wholesale & retail | 2024 |
| AFD Property Limited | Real estate | 2019 |
| Afdc Limited | Construction | 2011 |
| Afendi Retail Limited | Administrative & support | 2023 |
| AFF (Epoxy Coatings) Ltd. | Manufacturing | 2015 |
| Affable Home & Office Cleaning Services Ltd | Administrative & support | 2025 |
| Affaires Ltd | Extraterritorial | 2025 |
| Affetto Foods Ltd | Wholesale & retail | 2015 |
| Affexa Limited | Health & social care | 2015 |
| Affiliate Central Limited | Information & communication | 2007 |
| Affiliate Marketing Campaign Management Ltd | Professional & scientific | 2023 |
| Affiliated Utilities Limited | Other services | 2009 |
| Affilius Group Limited | Information & communication | 1990 |
| Affiniti Property Group Limited | Real estate | 2023 |
| Affinity Bay Limited | Wholesale & retail | 2011 |
| Affinity Decking Ltd | Construction | 2022 |
| Affinity Futures Consultancy Ltd | Professional & scientific | 2023 |
| Affinity Homes Northern Limited | Construction | 2022 |
| Affinity Knitwear Company Limited | Wholesale & retail | 2008 |
| Affinity Management Solutions Limited | Professional & scientific | 2016 |
| Affinity Real Estates Limited | Real estate | 2015 |
| Affinity Technology Solutions Limited | Information & communication | 2020 |
| Affirmative Funding Limited | Financial services | 2014 |
| Affirmed Traffic Management Ltd | Other services | 2017 |
| Afflander Limited | Real estate | 2021 |
| Afflecks Limited | Real estate | 2008 |
| Affluent Living Properties Ltd | Hospitality | 2021 |
| Afforda AFF Co., Ltd | Information & communication | 2021 |
| Affordable & Stylish Ltd | Wholesale & retail | 2009 |
| Affordable Accommodation (North West) Limited | Real estate | 2014 |
| Affordable and Stylish Interiors Limited | Real estate | 2017 |