| Aerotechs Ltd | Professional & scientific | 2008 |
| Aesthetic Nurse Mentors Ltd | Education | 2024 |
| Aesthetically Alluring Limited | Other services | 2024 |
| Aetelier Limited | Health & social care | 2024 |
| Aethel Ltd | Professional & scientific | 2025 |
| Aevum Investments Ltd | Real estate | 2016 |
| AFA Special Projects Limited | Professional & scientific | 2001 |
| Affinity Living Concepts Ltd | Real estate | 2021 |
| Afify Healthcare Ltd | Professional & scientific | 2024 |
| Afon Y WYE Deall Ltd | Education | 2024 |
| AG Hughes Holdings Ltd | Financial services | 2026 |
| Against the Grain Joinery Limited | Manufacturing | 2003 |
| Agavil Four Ltd | Extraterritorial | 2015 |
| Agavil Investments Limited | Households | 1957 |
| Agavil One Ltd | Extraterritorial | 2015 |
| Agavil Three Ltd | Extraterritorial | 2015 |
| Agavil Two Ltd | Extraterritorial | 2015 |
| AGD Trans Ltd | Transport & logistics | 2020 |
| Agema Defence Solutions Ltd | Administrative & support | 2023 |
| AGP Logistics Ltd | Transport & logistics | 2024 |
| Agri Future Biologicals Limited | Agriculture & fishing | 2022 |
| Agri Hillcard Ltd | Wholesale & retail | 2016 |
| Agri Management Solutions Limited | Agriculture & fishing | 2008 |
| Agri-Hr Ltd | Administrative & support | 2018 |
| Agricon Ltd | Wholesale & retail | 2024 |
| Agrifence Holding Co Ltd | Financial services | 2019 |
| Agroceutical Products Ltd | Manufacturing | 2012 |
| Agyeman & Daughters Limited | Information & communication | 2026 |
| AHC Recruitment Ltd | Professional & scientific | 2022 |
| AI Wholesale Ltd | Wholesale & retail | 2024 |
| Ailesbrook House Ltd | Hospitality | 2015 |
| Air Comfort Ltd | Administrative & support | 2004 |
| Air Flow Comfort Manufacturing Ltd | Manufacturing | 2022 |
| AJ & HR Price Ltd | Agriculture & fishing | 2024 |
| AJ Transport Consultancy Ltd | Transport & logistics | 2025 |
| Ajax Solutions Ltd | Wholesale & retail | 2022 |
| Ajen Consultancy Limited | Administrative & support | 2006 |
| AJF Flat Roofing Ltd | Construction | 2021 |
| Ajjan Capital Ltd | Real estate | 2018 |
| Ajjan Investments Ltd | Real estate | 2019 |
| AJP Stainless Ltd | Manufacturing | 2017 |
| AKT Establishments Ltd | Hospitality | 2022 |
| Akula Properties Ltd | Real estate | 2019 |
| AL Properties Alliance Limited | Real estate | 2013 |
| Alan C Prendergast Limited | Professional & scientific | 2006 |
| Alan J Masters Ltd | Wholesale & retail | 2007 |
| Alan Tarling Electrical Limited | Construction | 2005 |
| Albany Technology Limited | Information & communication | 2016 |
| Alberta Properties (Hereford) Limited | Hospitality | 2000 |
| Albys Timber Merchant Ltd | Wholesale & retail | 2023 |
| ALC Fire Solutions Ltd | Public administration | 2021 |
| Aldebaran Associates Limited | Administrative & support | 2005 |
| Alders END Farm Holidays Ltd | Hospitality | 2020 |
| Alderton Property Management Ltd | Households | 2018 |
| Alex Gooch Artisan Baker Limited | Manufacturing | 2012 |
| Alex Gooch Shops Ltd | Hospitality | 2023 |
| Alexander Rose Consultancy Ltd | Public administration | 2025 |
| Alexander Rose Properties Limited | Real estate | 2025 |
| Alexix Ltd | Transport & logistics | 2025 |
| ALF Adventures Ltd | Information & communication | 2020 |
| ALI Indian Cuisine Ltd | Hospitality | 2024 |
| Align Supply Chains Limited | Professional & scientific | 2020 |
| Aligned Balanced Connected Ltd | Education | 2025 |
| Alimenti Food Sciences Limited | Hospitality | 2016 |
| ALL Medical Aesthetics Limited | Other services | 2022 |
| ALL Safety Matters Limited | Other services | 2012 |
| Allard Agronomy and Crop Consultancy Services Limited | Agriculture & fishing | 2023 |
| Allegro Club International | Other services | 1995 |
| Allendale Associates Ltd | Professional & scientific | 2017 |
| Allensmore Group Holdings Limited | Financial services | 2024 |
| Alloy Herefordshire CIC | Manufacturing | 2025 |
| Alloy Tech (Hereford) Limited | Wholesale & retail | 2024 |
| Allpay Financial Services Limited | Financial services | 2024 |
| Allpay Group Limited | Financial services | 2024 |
| Allpay Holdings Limited | Financial services | 2019 |
| Allpay Payment Solutions Limited | Financial services | 2024 |
| Allseasons Travel (Callow) Limited | Administrative & support | 2012 |
| Allyson Mcdermott Limited | Professional & scientific | 2015 |
| Almeley Management Company Limited | Real estate | 2009 |
| Alpha 56 Solutions Ltd | Information & communication | 2020 |
| Alpha Aggregates Limited | Transport & logistics | 2006 |
| Alpha Engineering Ltd | Manufacturing | 2025 |
| Alpha HGV Recruitment and Training Ltd | Transport & logistics | 2015 |
| Alpha Holdings Group Limited | Financial services | 2025 |
| Alpha VR Ltd | Information & communication | 2025 |
| Alphalone Ltd | Wholesale & retail | 2025 |
| ALR Holdings Limited | Real estate | 2016 |
| Altior Construction Ltd | Construction | 2019 |
| Alto Dynamics Ltd | Manufacturing | 2024 |
| Alton 8'S Limited | Transport & logistics | 2006 |
| Altrion Ltd | Real estate | 2021 |
| AM Lynwood Ltd | Real estate | 2024 |
| AM Number Three Ltd | Real estate | 2023 |
| AM Structural Consultancy Ltd | Professional & scientific | 2016 |
| Amabel Darby Ltd | Manufacturing | 2023 |
| Amabel Ltd | Construction | 2022 |
| Amal Property Development Ltd | Real estate | 2021 |
| Amato Freehold Holdings Ltd | Real estate | 2024 |
| Amato Properties Ltd | Real estate | 2023 |
| AMB Energy Assessments Ltd | Professional & scientific | 2023 |