| 1 Palmer Drive Management Limited | Households | 2019 |
| 1-4 Courtfield Gardens (Trowbridge) Management Company Limited | Households | 2025 |
| 14 Norfolk Crescent Bath Flats Limited | Households | 1980 |
| 30 Silver Street Management Company Limited | Real estate | 1988 |
| 30 ST. Margaret's Street (Bradford on Avon) Limited | Professional & scientific | 2001 |
| 360 Home and Garden Ltd | Construction | 2025 |
| 56 Holdings Group Ltd | Financial services | 2026 |
| 8 Minute Energy Ltd | Energy | 2023 |
| 80PLUS Partners LLP | | 2012 |
| 80PLUS Services Ltd | Administrative & support | 2012 |
| 80S MAT Limited | Construction | 2026 |
| 95 Trowbridge Road Management Company Limited | Households | 2018 |
| 97 Trowbridge Road Limited | Households | 1988 |
| A & IF Ltd | Real estate | 2016 |
| A & IF Trading Limited | Financial services | 2017 |
| A&M Freeholds 1 Ltd | Real estate | 2005 |
| A&V Ultrasound Imaging Ltd | Health & social care | 2011 |
| A-Z of Emotional Health Ltd | Health & social care | 2014 |
| A.E.S. (Bath) Ltd | Administrative & support | 2003 |
| Academy Eyewear Ltd | Professional & scientific | 2025 |
| Acuto Ltd | Professional & scientific | 2024 |
| Adrian Biles-Wood Architects Ltd | Professional & scientific | 2025 |
| Advanced Details Ltd | Professional & scientific | 2014 |
| Advanced Radiopharmaceutical & Clinical Limited | Health & social care | 2026 |
| Albion Block Management Ltd | Administrative & support | 2017 |
| Alct Ltd | Administrative & support | 2017 |
| Alessandria Investments Limited | Real estate | 2010 |
| Alex Moulton Consulting Limited | Manufacturing | 2014 |
| Alex Moulton Limited | Manufacturing | 2014 |
| ALF & Dutch Ltd | Wholesale & retail | 2021 |
| Alfred's Bath Ltd | Wholesale & retail | 2022 |
| Alfred's Femme Ltd | Wholesale & retail | 2026 |
| ALL Trade Supplies Ltd | Administrative & support | 2002 |
| Alpha Taxis Trowbridge Limited | Transport & logistics | 2025 |
| Always Sunday Limited | Other services | 2018 |
| ALY Balsom Media Ltd | Information & communication | 2014 |
| Ambercode Technology Limited | Information & communication | 1997 |
| Amore Baba Ltd | Hospitality | 2021 |
| Andrew Whetton Limited | Health & social care | 2024 |
| Andrews Yard (Marshfield) Management Company Limited | Households | 2026 |
| Andromeda Chimneys & Home Limited | Administrative & support | 2026 |
| Andski Ltd | Hospitality | 2025 |
| Andy Wallis Water Engineering Ltd | Construction | 2016 |
| Angelfish (Bath) Ltd | Hospitality | 2009 |
| ANJ Property Services Ltd | Real estate | 2020 |
| Anmiev Consulting Ltd | Professional & scientific | 2022 |
| Ansible Motion Limited | Manufacturing | 2009 |
| Anthony Bowles Architecture Ltd | Professional & scientific | 2015 |
| Appleby & Townend Estate Agents Ltd | Real estate | 2020 |
| Aquae Sulis (Research) Limited | Professional & scientific | 2004 |
| Aquae Sulis Renatus Limited | Extraterritorial | 2014 |
| Ardua Tendit Ltd | Professional & scientific | 2023 |
| Argenta Partners Ltd | Administrative & support | 2025 |
| Ascenture Consulting Ltd | Professional & scientific | 2016 |
| Ashford Homes (South Western) Limited | Real estate | 1990 |
| Ashley Design Ltd | Professional & scientific | 2009 |
| Assembled Solutions Ltd | Professional & scientific | 2023 |
| Atelier 17 Ltd | Professional & scientific | 2007 |
| ATL Telecom Limited | Information & communication | 2001 |
| Aurora Dental Group Limited | Health & social care | 2020 |
| Automation Drives & Control Limited | Manufacturing | 1991 |
| Avon Antiques (Wiltshire) Limited | Wholesale & retail | 1986 |
| Avon Mews Estate Management Limited | Households | 2007 |
| Avon Printing Services Limited | Manufacturing | 1999 |
| Avoncliff Hydropower Ltd | Energy | 2017 |
| Avonvale Mews RMC Limited | Real estate | 2022 |
| Azura Enterprises Ltd | Administrative & support | 2025 |
| B.O.A Teapot (UK) Ltd | Hospitality | 2017 |
| Bath & Wilts Schools' Sports Trust Limited | Arts & recreation | 2013 |
| Bath Financial Planning Limited | Financial services | 2016 |
| Bath Narrowboats Ltd | Hospitality | 1989 |
| Bath Property Management Ltd | Real estate | 2009 |
| Bath Signature Holidays Ltd | Real estate | 2026 |
| Bath Speech Therapy Ltd | Education | 2021 |
| Bbhg Limited | Professional & scientific | 2016 |
| Bbtc Ltd | Information & communication | 2025 |
| BE That Difference Ltd | Information & communication | 2022 |
| BE Well Creative Limited | Arts & recreation | 2014 |
| Beancraft Ltd | Manufacturing | 2019 |
| Bearfield Church | Other services | 2010 |
| Bedstone Developments (Argyle) Ltd | Construction | 2023 |
| Beehive Energy Limited | Water & waste | 2015 |
| Bego Coaching & Training Ltd | Education | 2008 |
| Belcombe Assessment Services Limited | Administrative & support | 2012 |
| Beyond the Curriculum Ltd | Professional & scientific | 2014 |
| Biobook Limited | Wholesale & retail | 2010 |
| Biocrust Ltd. | Water & waste | 2012 |
| BJP Finance Ltd | Professional & scientific | 2007 |
| Blousie and Frank Holdings Limited | Financial services | 2026 |
| Blousie and Frank Limited | Education | 2021 |
| Blubelt Hospitality Limited | Hospitality | 2018 |
| Blue Lunar Ltd | Information & communication | 2023 |
| Blue Pine Ltd | Information & communication | 2021 |
| Bluebelt Hospitality Limited | Hospitality | 2013 |
| BOA Soft Tissue Therapy Ltd | Health & social care | 2025 |
| Bondfield Electrical Services Ltd | Construction | 2019 |
| Bounce Behavioural Science Ltd | Professional & scientific | 2019 |
| Bourne Associates Limited | Professional & scientific | 2005 |
| Boutique Culture Ltd | Hospitality | 2022 |
| Bradford Kebabs Limited | Hospitality | 2026 |