| Batchelor Crewe Property Limited | Real estate | 2023 |
| Batchelor Sharp Limited | Extraterritorial | 2020 |
| Batches Bakery CIC | Manufacturing | 2022 |
| Bateman & SON Plumbing & Heating Ltd | Construction | 2014 |
| Batemans GAS Services Limited | Construction | 2003 |
| Batemans Media Group Ltd | Information & communication | 2026 |
| Batemans Properties Ltd | Real estate | 2024 |
| Bates Estates Evolution Ltd | Construction | 2024 |
| Bates Property Options Ltd | Real estate | 2018 |
| Bath & Bristol Digs Limited | Real estate | 2015 |
| Bath & Bristol Tree Services Limited | Administrative & support | 2026 |
| Bath & West Bathrooms Limited | Construction | 2016 |
| Bath & West Plumbing & Heating Limited | Construction | 2002 |
| Bath and Bristol Electrical Ltd | Construction | 2024 |
| Bath and West Finance 1 Limited | Financial services | 2019 |
| Bath and West Finance 2 Limited | Financial services | 2019 |
| Bath and West Finance 3 Limited | Financial services | 2019 |
| Bath and West Finance 4 Limited | Financial services | 2023 |
| Bath and West Finance 5 Limited | Financial services | 2023 |
| Bath and West Finance 6 Limited | Financial services | 2024 |
| Bath and West Finance 7 Limited | Financial services | 2019 |
| Bath and West Finance 8 Limited | Financial services | 2022 |
| Bath and West Finance 9 Limited | Financial services | 2021 |
| Bath and West Finance Limited | Financial services | 2011 |
| Bath and West Holdings Limited | Financial services | 2026 |
| Bath and West Technologies Limited | Information & communication | 2022 |
| Bath Aqua Glass Limited | Manufacturing | 1998 |
| Bath Artificial Grass Company Limited | Administrative & support | 2022 |
| Bath Bespoke Finishes Limited | Construction | 2025 |
| Bath Building & Installations Ltd | Construction | 2019 |
| Bath Capital Limited | Energy | 2024 |
| Bath Chamber of Commerce (Incorporated) | Other services | 1902 |
| Bath Circle Limited | Hospitality | 2014 |
| Bath Construction Limited | Construction | 2015 |
| Bath Culture House Ltd | Manufacturing | 2019 |
| Bath Demolition (Avonmouth) Limited | Construction | 2013 |
| Bath Demolition Holdings Ltd | Financial services | 2020 |
| Bath Demolition Lansdown Grange Ltd | Construction | 2025 |
| Bath Demolition Limited | Construction | 1999 |
| Bath Dental Practice Ltd | Health & social care | 2012 |
| Bath Drain and Jetting Service Limited | Administrative & support | 1981 |
| Bath Drones Ltd | Information & communication | 2014 |
| Bath Greengrocers Ltd | Wholesale & retail | 2019 |
| Bath Heart Care Ltd | Health & social care | 2025 |
| Bath Hill Management Limited | Real estate | 2013 |
| Bath Holiday Lettings Limited | Real estate | 2022 |
| Bath Hot Houses Ltd | Real estate | 2021 |
| Bath Humbug Shop Ltd | Wholesale & retail | 2026 |
| Bath International Transport Limited | Transport & logistics | 2016 |
| Bath Lock & Key Limited | Wholesale & retail | 2011 |
| Bath Night Club Limited | Real estate | 2011 |
| Bath Partitions Limited | Construction | 2009 |
| Bath Pest Controller Ltd | Administrative & support | 2019 |
| Bath Pro Cleaning Services Ltd | Administrative & support | 2023 |
| Bath Property Guys Ltd | Construction | 2025 |
| Bath Respiratory Limited | Health & social care | 2006 |
| Bath Robotic Surgery Limited | Health & social care | 2026 |
| Bath Safe & Security Limited | Wholesale & retail | 2010 |
| Bath Scaffolding Limited | Financial services | 1988 |
| Bath Skin Care Ltd | Health & social care | 2022 |
| Bath Steam Laundry Company Limited | Administrative & support | 1936 |
| Bath STL Limited | Professional & scientific | 2018 |
| Bath Stonemasons Limited | Construction | 2014 |
| Bath TKD Limited | Arts & recreation | 2011 |
| Bath Van Centre Limited | Wholesale & retail | 2025 |
| Bath Vascular Ltd | Health & social care | 2010 |
| Bath Voice News & Media Ltd | Information & communication | 2019 |
| Bath Wholesale Fruiterers Limited | Wholesale & retail | 2019 |
| Bathcom Limited | Administrative & support | 2019 |
| Bathroom Solutions (Bristol) Ltd | Wholesale & retail | 2011 |
| Bathstrete Securities Limited | Professional & scientific | 1977 |
| Bathway Limited | Construction | 2024 |
| Bathweston One Ltd | Professional & scientific | 2011 |
| Bathweston Two Ltd | Extraterritorial | 2011 |
| Batida Restaurant Ltd | Hospitality | 2020 |
| Batmink Limited | Wholesale & retail | 1983 |
| Batners Engineering Services Limited | Professional & scientific | 2015 |
| Batranu Transport Ltd | Transport & logistics | 2019 |
| Bats Property Ltd | Construction | 2022 |
| Batten Down Productions Limited | Information & communication | 2013 |
| Battens Orchard Management Limited | Households | 2018 |
| Battens Yard Collective Ltd | Real estate | 2026 |
| Battens Yard Ltd | Real estate | 2026 |
| Battery Park Music Limited | Arts & recreation | 2015 |
| Battery Services (SW) Limited | Construction | 2014 |
| Battery Technologies UK Limited | Manufacturing | 2013 |
| Batteryhead Ltd | Information & communication | 2022 |
| Battle Caps Ltd | Extraterritorial | 2025 |
| Battleborough Grange Hotel Ltd | Hospitality | 2018 |
| Battlezone (Ashford) Limited | Arts & recreation | 2011 |
| Battrick Clark | | 1997 |
| Battrick Clark Solicitors Ltd | Professional & scientific | 2002 |
| Baugh Gardens Management Company Limited | Households | 2020 |
| Bauhinia Limited | Hospitality | 2009 |
| Bauhouse Ltd | Real estate | 2021 |
| Baumatrix Ltd | Professional & scientific | 2020 |
| Baureis Limited | Financial services | 2024 |
| Bavetta Property Limited | Real estate | 2026 |
| Bavirs Ltd. | Real estate | 2014 |
| Bawa (Management Services) Limited | Other services | 1993 |