| Aero Cars of Wolverhampton Ltd | Transport & logistics | 2017 |
| Aero Executive Midlands Ltd | Transport & logistics | 2014 |
| Aero QMS Enterprise Limited | Manufacturing | 2022 |
| Aero R2R Ltd | Real estate | 2024 |
| Aero Stays Holdings Ltd | Financial services | 2024 |
| Aero Stays Ltd | Hospitality | 2022 |
| Aero Travel (BHX) Ltd | Transport & logistics | 2019 |
| Aerobic and Spa Ltd | Arts & recreation | 2014 |
| Aerofab Fabrications Limited | Manufacturing | 1990 |
| Aeroguard Fire and Medical Limited | Transport & logistics | 2025 |
| Aerolex (UK) Limited | Administrative & support | 1992 |
| Aeron Consulting Limited | Professional & scientific | 2018 |
| Aerosoul (Birmingham) Ltd | Administrative & support | 2012 |
| Aeroswift Logistics Limited | Transport & logistics | 2025 |
| Aerulle Aviation Limited | Manufacturing | 2020 |
| Aervuegroup Ltd | Construction | 2025 |
| AES 123 Ltd | Administrative & support | 2026 |
| Aesc Limited | Professional & scientific | 2012 |
| Aesthe Clinic Ltd | Other services | 2026 |
| Aestherapy by Sophie Shakira Ltd | Other services | 2020 |
| Aesthetic Digital Limited | Professional & scientific | 2021 |
| Aesthetic Health and Fitness Club Limited | Arts & recreation | 2015 |
| Aesthetic Health and Fitness Limited | Arts & recreation | 2018 |
| Aesthetic Nurse Software Limited | Information & communication | 2016 |
| Aesthetic Skin LAB Ltd | Health & social care | 2018 |
| Aesthetic Software Holding Limited | Financial services | 2026 |
| Aesthetica Clinic Supplies Ltd | Wholesale & retail | 2025 |
| Aesthetica Skin Clinic Limited | Other services | 2015 |
| Aesthetically Naked Ltd | Other services | 2025 |
| Aestheticology Ltd | Administrative & support | 2017 |
| Aesthetics AA Ltd | Health & social care | 2022 |
| Aesthetics by Charlie.C Ltd | Other services | 2026 |
| Aesthetics by Jasmine Limited | Health & social care | 2025 |
| Aesthetics by Sahr Limited | Health & social care | 2022 |
| Aesthetics Practitioner Ltd | Health & social care | 2015 |
| Aesthetique Ltd | Other services | 2026 |
| Aestrata Ltd | Information & communication | 2020 |
| Aeternum Jewellery Ltd | Manufacturing | 2018 |
| Aether Workforce Ltd | Administrative & support | 2026 |
| Aethera Hygiene Ltd | Manufacturing | 2025 |
| Aethersteel Limited | Wholesale & retail | 2022 |
| Aetna Global Benefits (UK) Limited | Financial services | 1998 |
| Aevus Estates Ltd | Real estate | 2023 |
| AF Builders UK Ltd | Construction | 2024 |
| AF Catering Services Ltd | Hospitality | 2024 |
| AF Construction Birmingham Ltd | Construction | 2020 |
| AF Couriers Ltd | Transport & logistics | 2024 |
| AF Design Ltd | Professional & scientific | 2023 |
| AF Discount Depot Limited | Wholesale & retail | 2025 |
| AF Discounts Depot Ltd | Wholesale & retail | 2025 |
| AF Hospitality Ltd | Hospitality | 2020 |
| AF Invest Ltd | Real estate | 2024 |
| AF Parts Ltd | Wholesale & retail | 2026 |
| AF RLH Bantu Properties Limited | Real estate | 2021 |
| Af-X Fireblocker (UK) Ltd | Construction | 2020 |
| AF786 Ltd | Wholesale & retail | 2018 |
| AFA Rokomari Enterprise Ltd | Wholesale & retail | 2021 |
| Afadlink International Resources UK Ltd | Professional & scientific | 2008 |
| Afak Trading Limited | Wholesale & retail | 2010 |
| Afaq Alnour Ltd | Education | 2021 |
| Afaq and Sons Private Limited | Wholesale & retail | 2024 |
| Afaq's UK Ltd | Wholesale & retail | 2017 |
| Afaqprospects Ltd | Other services | 2018 |
| Afaray Financials Limited | Administrative & support | 2016 |
| AFC Global Ltd | Financial services | 2018 |
| AFC Houses Ltd | Real estate | 2025 |
| AFC Security Ltd | Other services | 2002 |
| AFC USA Limited | Administrative & support | 2016 |
| AFC Wolverhampton City Ltd | Arts & recreation | 2022 |
| AFEMA24.COM Management Limited | Administrative & support | 2015 |
| Affan Maqsood Traders Ltd | Wholesale & retail | 2023 |
| Affan Sultan Ltd | Wholesale & retail | 2025 |
| Affan Traders Ltd | Wholesale & retail | 2024 |
| Affari Limited | Wholesale & retail | 2026 |
| Affetto Italiano Limited | Wholesale & retail | 2021 |
| Affeya Ltd | Information & communication | 2024 |
| Affiliate Finance Ltd | Financial services | 2022 |
| Affiliate Marketing Ltd | Wholesale & retail | 2024 |
| Affiliate Programme Ltd | Professional & scientific | 2026 |
| Affinion Partnership Ltd | Professional & scientific | 2017 |
| Affinion Property Services Limited | Administrative & support | 2025 |
| Affinis Consulting Ltd | Professional & scientific | 2026 |
| Affinitax Limited | Professional & scientific | 2023 |
| Affinity Acre Ltd | Real estate | 2022 |
| Affinity Business Services Limited | Financial services | 2001 |
| Affinity Classics & Engineering (Ace) Ltd | Wholesale & retail | 2007 |
| Affinity Community Engagement Project CIC | Health & social care | 2010 |
| Affinity Leasing Limited | Administrative & support | 2006 |
| Affirmative Consultancy LLP | | 2023 |
| Affluence Associates Ltd | Real estate | 2022 |
| Afforda Group Ltd | Real estate | 2019 |
| Afforda Interiors Ltd | Manufacturing | 2024 |
| Affordable Home Options LLP | | 2008 |
| Affordable House Clearance Limited | Wholesale & retail | 2018 |
| Affordable Lighting Limited | Wholesale & retail | 2007 |
| Affordable Memorials & Flowers Ltd | Wholesale & retail | 2021 |
| Affordable Motors Ltd | Wholesale & retail | 2021 |
| Affordable Properties Ltd | Real estate | 2012 |
| Affordable Property Services Limited | Construction | 2017 |
| Affordable Sofas Ltd | Wholesale & retail | 2024 |