| A&M Convenience Stores Ltd | Administrative & support | 2024 |
| A,E,J&W Properties Ltd | Real estate | 2026 |
| A-Met Metrology Ltd | Professional & scientific | 2013 |
| A. J. M. Autofixx. Ltd | Wholesale & retail | 2016 |
| A.C. Independence Limited | Information & communication | 1997 |
| A.D. Adeyemo Limited | Health & social care | 2010 |
| A.M. Supportive Care Ltd | Administrative & support | 2022 |
| A.P. VET Limited | Professional & scientific | 2013 |
| A.W. Engineering (Hereford) Ltd. | Manufacturing | 2003 |
| A1 Stainless Steel Stockists Limited | Wholesale & retail | 2018 |
| AA Images Ltd | Information & communication | 2021 |
| Aaron & Jayde Williams Ltd | Agriculture & fishing | 2024 |
| Aaron Walker Racing Limited | Administrative & support | 2022 |
| ABA Cleaners Limited | Administrative & support | 2012 |
| Abacus International Ltd | Professional & scientific | 2019 |
| Abbot's Consultants Limited | Professional & scientific | 2015 |
| Abbots Mead Management (NO.3) Limited | Households | 1990 |
| Abbots Mead Management (NO.4) Limited | Real estate | 1990 |
| Abbots Mead Management Limited | Households | 1989 |
| Aber Latin Ltd | Education | 2021 |
| Abergavenny Construction Limited | Construction | 2009 |
| Aberhall Limited | Agriculture & fishing | 2022 |
| Able Precision Engineers (Colnbrook) Limited | Manufacturing | 1959 |
| Able Scape Limited | Administrative & support | 2017 |
| Aboutmywill Ltd | Professional & scientific | 2019 |
| Above and Beyond Marketing Services Ltd | Professional & scientific | 2023 |
| ABP Development Limited | Real estate | 2004 |
| Absolute ISO Holdings Limited | Financial services | 2026 |
| Absolute Joinery (Hereford) Limited | Construction | 2012 |
| Absolute Spaces Living Ltd | Real estate | 2016 |
| Absolutely Brilliant Properties Limited | Real estate | 2014 |
| Abstract Audio Limited | Information & communication | 2003 |
| ABT Land Ltd | Construction | 2021 |
| Abumax Limited | Professional & scientific | 2008 |
| ABX Enterprises Ltd | Mining & quarrying | 2026 |
| AC Properties Hereford Ltd | Real estate | 2025 |
| AC06 Consulting Ltd | Professional & scientific | 2022 |
| Acacia Retail Group Limited | Wholesale & retail | 2021 |
| Accasion Marquees Limited | Administrative & support | 2007 |
| Access & Leisure Ltd | Construction | 2017 |
| Access Floors (Holdings) Limited | Financial services | 2014 |
| Access Floors Distribution Limited | Construction | 2009 |
| Access Floors Properties Limited | Real estate | 2026 |
| Accord Design and Build Limited | Construction | 2023 |
| Accordia Academies Trust | Education | 2013 |
| Accucraft UK Ltd | Manufacturing | 2004 |
| Ace Tyres Hereford Limited | Wholesale & retail | 2023 |
| Acer Tree Services (Hereford) Limited | Agriculture & fishing | 2014 |
| Achieve Renovations Ltd | Construction | 2025 |
| ACJ Promotions Ltd | Wholesale & retail | 2019 |
| ACM Developments (Hereford) Ltd | Construction | 2019 |
| Acmc Consulting Limited | Administrative & support | 2012 |
| Acme GAS Hereford Ltd | Extraterritorial | 2011 |
| Acoa Ltd | Information & communication | 2026 |
| Acompany Ltd | Professional & scientific | 2021 |
| Aconbury Leisure Limited | Hospitality | 2020 |
| Acorn C Ltd | Construction | 2012 |
| Acorn Energy and Design Limited | Professional & scientific | 2012 |
| Acorntrading Hereford Limited | Wholesale & retail | 2025 |
| Acquire Safety Limited | Construction | 2016 |
| Acre Accountancy Limited | Professional & scientific | 2007 |
| Acre Smallholding Ltd | Agriculture & fishing | 2022 |
| Actfurniture Ltd | Other services | 2020 |
| Acticareuk Limited | Wholesale & retail | 2020 |
| Action Law UK Ltd | Real estate | 2019 |
| Actionstream Direct Media Limited | Information & communication | 2000 |
| Activate Sports Education Ltd | Education | 2021 |
| Active Analytics Ltd. | Information & communication | 2011 |
| Active Health Chiropractic Ltd | Health & social care | 2014 |
| Active Juniors Limited | Education | 2026 |
| Active Rehab Equipment LLP | | 2013 |
| Actual Aggregates Limited | Mining & quarrying | 2021 |
| Acumen Industrial Services Limited | Manufacturing | 2007 |
| Acumen Intelligent Consulting Limited | Professional & scientific | 2020 |
| Acumenity Limited | Financial services | 2017 |
| AD Engineering (Hereford) Limited | Professional & scientific | 2025 |
| AD Sparx Limited | Professional & scientific | 2024 |
| Adams Building Contractors (Herefordshire) Limited | Construction | 2012 |
| Adaptanet Ltd | Information & communication | 2025 |
| Adbacs Limited | Professional & scientific | 2005 |
| Addex Trading Ltd | Extraterritorial | 2007 |
| Addison Road LLP | | 2016 |
| Adhara One Limited | Administrative & support | 2021 |
| ADM Logistics 2021 Ltd | Transport & logistics | 2021 |
| Admontem Limited | Information & communication | 2016 |
| Adperform Limited | Professional & scientific | 2014 |
| Advanced Anaerobics Limited | Manufacturing | 2012 |
| Advanced Lock Skills Limited | Administrative & support | 2005 |
| Advancedtechretail Ltd | Wholesale & retail | 2023 |
| Advent Estates Limited | Real estate | 1998 |
| Advent Holdings Limited | Real estate | 2025 |
| Adventures With Will Ltd | Arts & recreation | 2018 |
| ADY Watts Enterprises Limited | Arts & recreation | 2012 |
| Adyan Hereford Limited | Hospitality | 2025 |
| Adzor Ltd | Administrative & support | 2006 |
| AE Hereford Ltd | Wholesale & retail | 2020 |
| Aegis Bridge Ltd | Professional & scientific | 2025 |
| Aero Foundry Ltd | Professional & scientific | 2024 |
| Aerobarrier UK and Ireland Ltd | Construction | 2023 |
| Aerospace Defence Consulting Ltd | Professional & scientific | 2025 |