| 12 Brunswick Square Management Company Limited | Households | 2004 |
| 19 Matheson Road Limited | Households | 2008 |
| 2FOLD Vintage Ltd | Wholesale & retail | 2026 |
| 2ND SON Ltd | Construction | 2005 |
| 4 Seasons Worx Holding Limited | Financial services | 2022 |
| 4 Seasons Worx Limited | Administrative & support | 2019 |
| 40 Oakley Ltd | Households | 2013 |
| 8 Massive Limited | Financial services | 2023 |
| A & T Golf Limited | Arts & recreation | 2017 |
| A and a Blinds Ltd | Wholesale & retail | 2010 |
| A D Williams Transport Limited | Transport & logistics | 2001 |
| A Griffiths Holdings Ltd | Financial services | 2025 |
| A Jayne Engineering Ltd | Manufacturing | 2024 |
| A Kibble Motor Vehicle Repairs Limited | Wholesale & retail | 2021 |
| A Plus UK Logistics Ltd | Transport & logistics | 2022 |
| A&P James Limited | Real estate | 2015 |
| A.B.T.Products Limited | Manufacturing | 1971 |
| A.J. Lowther & SON Ltd | Construction | 1965 |
| A.P Traditional Metal Roofing Limited | Construction | 2026 |
| A4 Office Products Limited | Wholesale & retail | 1999 |
| Abbeydale Vetlink Veterinary Training Limited | Education | 2003 |
| Abbots Advisory Limited | Information & communication | 2026 |
| Abbotts Advisory Limited | Information & communication | 2026 |
| Abbotts Field Management Co Limited | Households | 2022 |
| Aberglen Gundogs Limited | Other services | 2018 |
| ABT Loadmac Limited | Professional & scientific | 2011 |
| Acatolyst Limited | Manufacturing | 2002 |
| ACCOUNTS4PROBATE Ltd | Professional & scientific | 2024 |
| ACJ Consultancy Limited | Professional & scientific | 2020 |
| AD Technic Limited | Information & communication | 2013 |
| Adriana Properties Limited | Real estate | 2015 |
| Adventurehers Ltd | Education | 2024 |
| AGA Ross on WYE Ltd | Hospitality | 2024 |
| Ageless Aesthetics by Alexa Ltd | Other services | 2024 |
| Agent Summary Limited | Real estate | 2021 |
| Agricounts Ltd | Professional & scientific | 2014 |
| Agro Exports Limited | Wholesale & retail | 1981 |
| Agrobiologic UK Ltd | Agriculture & fishing | 2024 |
| Alastair Howie Limited | Wholesale & retail | 1997 |
| Albanyoak Limited | Manufacturing | 1983 |
| Alchem Industries Limited | Extraterritorial | 1986 |
| Alderco Ltd | Construction | 2025 |
| Aldgate Education Bidco Ltd | Financial services | 2018 |
| Aldgate Education Propco 1 Limited | Real estate | 2019 |
| Alfer Business Operations Ltd | Construction | 2025 |
| Alimg Consultancy Services Ltd | Information & communication | 2015 |
| Alliancenetworkuk Ltd | Transport & logistics | 2026 |
| Allied Exploration & Geotechnics Limited | Construction | 1987 |
| Alpha Leonis Ltd | Administrative & support | 2024 |
| Alpine on the WYE Ltd | Professional & scientific | 2023 |
| AMC Decals Limited | Manufacturing | 2018 |
| Amlee Electrical Supplies Ltd | Wholesale & retail | 2000 |
| AN Excellent Company Ltd | Construction | 2016 |
| Andercourt Farming Limited | Professional & scientific | 1990 |
| Andrews and Ford Group Limited | Extraterritorial | 2020 |
| Andrews and Ford Limited | Information & communication | 2016 |
| Anegm Management Limited | Real estate | 1983 |
| Anemone Landscapes Ltd | Administrative & support | 2010 |
| Angling Dreams Fisheries Ltd | Agriculture & fishing | 2024 |
| Angling Dreams Limited | Arts & recreation | 2013 |
| Animal Rescue Foundation Limited | Professional & scientific | 2007 |
| Animind Studio Ltd | Information & communication | 2022 |
| Anita Robinson Limited | Professional & scientific | 2019 |
| Anne & Ning International Trading Ltd | Hospitality | 2017 |
| Ansa Consulting Limited | Information & communication | 2026 |
| Antares Defence Systems Ltd | Manufacturing | 2010 |
| APC Compliance Limited | Professional & scientific | 2005 |
| APD International Limited | Manufacturing | 2002 |
| Apex Solutions Consultancy Limited | Information & communication | 2024 |
| Apogee Systems Ltd | Professional & scientific | 2019 |
| Appleyard (Linton) Management Company 2012 Ltd | Hospitality | 2011 |
| Applied Maintenance Ltd | Administrative & support | 2017 |
| Approdo Limited | Information & communication | 2026 |
| Aqua Thermae Limited | Construction | 2009 |
| Aquatreat Limited | Extraterritorial | 1983 |
| Archenfield Smith Consulting Limited | Information & communication | 2019 |
| Archway Productions Ltd | Arts & recreation | 2012 |
| Arcl Consulting Ltd | Professional & scientific | 2021 |
| Arctic Heating & Plumbing Installations Ltd | Construction | 2013 |
| Arete BD Ltd | Construction | 2023 |
| Arthur Agency Limited | Administrative & support | 2022 |
| Artisan Media Ltd | Manufacturing | 2010 |
| ASH Safety Consultants Ltd | Information & communication | 2015 |
| Ashfield Care (Ross-On-Wye) Ltd | Health & social care | 2012 |
| Ashfield Park Road Properties Ltd | Households | 2023 |
| ASK Trev Ltd | Health & social care | 2012 |
| Aslec Limited | Construction | 2003 |
| Aspect Control Services Limited | Transport & logistics | 1995 |
| Astro Cat Events Limited | Arts & recreation | 2022 |
| AT Old Gore Farm Limited | Hospitality | 2004 |
| Aubrey & Co Accountancy Limited | Professional & scientific | 2015 |
| Avolution Cleaning Services Limited | Administrative & support | 2012 |
| AWD Associates Limited | Professional & scientific | 2013 |
| B V Please Limited | Financial services | 2014 |
| B Williams Site Services Ltd | Construction | 2014 |
| B&A Drummond Ltd | Financial services | 2026 |
| Balance Addicts Ltd | Wholesale & retail | 2023 |
| Balthasar Ltd | Professional & scientific | 2000 |
| BAM Property Management Limited | Real estate | 2023 |
| Bank House (Ross-On-Wye) Management Limited | Real estate | 2007 |