| AWB Technology Partnership Ltd | Information & communication | 2025 |
| Awesomesauce Marketing Ltd | Administrative & support | 2020 |
| Aynho Court Property Limited | Real estate | 1982 |
| Aynhoe Park Estate Management Company Limited | Households | 2017 |
| AZ Global Solutions Ltd. | Wholesale & retail | 2017 |
| Azimuth Training Limited | Education | 2012 |
| Azriel Health Limited | Public administration | 2024 |
| B Carron Builders Ltd | Construction | 2007 |
| B R Centre Limited | Construction | 1999 |
| B R Cousins and Sons Limited | Construction | 2011 |
| B W Logistics Limited | Wholesale & retail | 2014 |
| B&C Exterior Cleaning Ltd | Administrative & support | 2026 |
| B&S Groundmasters Ltd | Construction | 2026 |
| B&S Hughes Limited | Construction | 2000 |
| B. W. Barnes Builders Limited | Construction | 2005 |
| B2B Internet Solutions Limited | Administrative & support | 2000 |
| B3 Self Storage Ltd | Real estate | 2023 |
| BA Sellers & Products Ltd | Wholesale & retail | 2025 |
| Babington Consulting Ltd | Professional & scientific | 2024 |
| Baciu Logistics Ltd | Transport & logistics | 2026 |
| Back Garden Performance Garage Ltd | Wholesale & retail | 2022 |
| Bahn Investments Limited | Professional & scientific | 1999 |
| Bailey Fire Services Limited | Other services | 2018 |
| Bainbridge Composites Ltd | Manufacturing | 2016 |
| Baker Ceilings & Partitions Limited | Construction | 2014 |
| Bakerdale Limited | Hospitality | 2017 |
| Baldwyn Investments Ltd | Financial services | 2022 |
| Baldyga Ltd | Other services | 2017 |
| Bamboo Creations Ltd | Professional & scientific | 2012 |
| Banbury Aerials Group Ltd | Extraterritorial | 2009 |
| Banbury Aerials Services Ltd | Extraterritorial | 2009 |
| Banbury and District Chamber of Commerce | Other services | 2002 |
| Banbury Appliance Centre Limited | Wholesale & retail | 2011 |
| Banbury Authentic Massage Limited | Health & social care | 2025 |
| Banbury BID Limited | Other services | 2017 |
| Banbury Boarding Kennels and Cattery Limited | Other services | 2017 |
| Banbury Boiler Services Limited | Other services | 2009 |
| Banbury Bookkeeping and Accountancy Limited | Professional & scientific | 2011 |
| Banbury Breakfast Ltd | Hospitality | 2025 |
| Banbury Bridal & Prom LLP | | 2025 |
| Banbury Builders Limited | Construction | 2026 |
| Banbury Business Solutions Ltd | Professional & scientific | 2021 |
| Banbury Car Clinic Limited | Wholesale & retail | 2021 |
| Banbury Car Sales Limited | Wholesale & retail | 2021 |
| Banbury Cattery Limited | Other services | 2017 |
| Banbury Commercial Estates Limited | Real estate | 2026 |
| Banbury Commodities Limited | Wholesale & retail | 2016 |
| Banbury Construction & Utilities Ltd | Construction | 2025 |
| Banbury Cross Coffee House Ltd | Hospitality | 2020 |
| Banbury Cross Veterinary Farm Supplies Limited | Wholesale & retail | 1996 |
| Banbury Drain Services Ltd | Administrative & support | 2020 |
| Banbury Executive Limited | Transport & logistics | 2023 |
| Banbury Express Food & Wine Ltd | Administrative & support | 2016 |
| Banbury Express Limited | Wholesale & retail | 2024 |
| Banbury FM Limited | Information & communication | 2019 |
| Banbury Grab & Plant Hire Ltd | Water & waste | 2013 |
| Banbury Grab & Skip Hire Ltd | Water & waste | 2013 |
| Banbury Grab & Tipper Hire Ltd | Water & waste | 2013 |
| Banbury Gunsmiths Limited | Extraterritorial | 2008 |
| Banbury Heath Limited | Hospitality | 2007 |
| Banbury Hygienist Ltd | Health & social care | 2022 |
| Banbury IT Wizard Limited | Other services | 2012 |
| Banbury Kebabish Limited | Hospitality | 2025 |
| Banbury Kennels Limited | Other services | 2017 |
| Banbury Kitchens Limited | Construction | 2017 |
| Banbury Lawncare Limited | Administrative & support | 2016 |
| Banbury Lettings Limited | Real estate | 2010 |
| Banbury Litho Limited | Manufacturing | 1981 |
| Banbury Martial Arts Centre Ltd | Arts & recreation | 2019 |
| Banbury Masonic Buildings Company Limited | Real estate | 1967 |
| Banbury Memorials Limited | Manufacturing | 2016 |
| Banbury Modern Furniture Limited | Wholesale & retail | 2013 |
| Banbury Museum Trading Limited | Wholesale & retail | 2014 |
| Banbury Oscar Cars Ltd | Wholesale & retail | 2025 |
| Banbury Plant & Skip Hire Limited | Water & waste | 2021 |
| Banbury Plastic Fittings Limited | Manufacturing | 2000 |
| Banbury Postiche Limited | Manufacturing | 1970 |
| Banbury Powder Coating Limited | Manufacturing | 2003 |
| Banbury Print & Design Limited | Manufacturing | 2003 |
| Banbury Property Investments Ltd | Real estate | 2025 |
| Banbury Quays Consortium CIC | Professional & scientific | 2023 |
| Banbury Racing Limited | Manufacturing | 1967 |
| Banbury Road Projects LLP | | 2015 |
| Banbury Roofing Centre Limited | Extraterritorial | 2002 |
| Banbury Rugby Club Limited | Arts & recreation | 2021 |
| Banbury Safety Supplies Ltd | Wholesale & retail | 2024 |
| Banbury Shoe Repairs Ltd | Professional & scientific | 2014 |
| Banbury Sweet & Spicy Curry Limited | Hospitality | 2025 |
| Banbury Taxi Services Limited | Transport & logistics | 2013 |
| Banbury Taxis (Banbury) Limited | Transport & logistics | 2008 |
| Banbury Traders Limited | Wholesale & retail | 2024 |
| Banbury Tropical Limited | Wholesale & retail | 2017 |
| Banbury Tyre Hub Ltd | Wholesale & retail | 2026 |
| Banbury Van & Car Hire Ltd | Hospitality | 2008 |
| Banbury Vehicle Recovery Ltd | Transport & logistics | 2019 |
| Banburybestcleaners Ltd | Administrative & support | 2025 |
| Banburyphonefixx Limited | Wholesale & retail | 2020 |
| Banburysecurityservices Ltd | Administrative & support | 2020 |
| Bankes-Hughes Limited | Information & communication | 2006 |
| Bankfield Coventry Limited Partnership | | 2007 |