| Berkeley Street Management Company Limited | Households | 1980 |
| Berkeley Vale Park Ltd. | Real estate | 1975 |
| Berkhampstead School (Cheltenham) Trust Limited | Education | 1973 |
| Berkhampstead School (Day Care Nursery) Limited | Health & social care | 2011 |
| Berkley Energy Holdings Ltd | Wholesale & retail | 2024 |
| Bernhard and Geoffrey Ltd | Other services | 2024 |
| Berthold Residential Ltd | Real estate | 2018 |
| Bespoke Bourton Ltd | Arts & recreation | 2021 |
| Bespoke Furniture Delivery & Installations (UK) Ltd | Manufacturing | 2014 |
| Bespoke Impact Limited | Arts & recreation | 2016 |
| Bespoke Montpellier Investments Limited | Real estate | 2016 |
| Bespoke Sculpting Ltd | Administrative & support | 2024 |
| Bespoke Tax Accountants Limited | Other services | 2014 |
| Best Hand Car Wash Cheltenham Ltd | Administrative & support | 2026 |
| Best HPI Check Ltd | Information & communication | 2022 |
| Best in Glass Ltd | Wholesale & retail | 2016 |
| Best Living Glos Limited | Real estate | 2025 |
| Best MED Anto Limited | Administrative & support | 2017 |
| Bestall Limited | Other services | 2015 |
| Bestayz Ltd | Extraterritorial | 2022 |
| Bethany Rose - Aesthetics & Beauty Limited | Other services | 2019 |
| Betsy Benn Limited | Wholesale & retail | 2012 |
| Better Bounce Direct Limited | Arts & recreation | 2006 |
| Better Business Relationships Limited | Information & communication | 2010 |
| Better Places Consulting Ltd | Professional & scientific | 2025 |
| Betteridge Renovations Ltd | Construction | 2025 |
| Betty Sugar’S Tea Rooms Limited | Hospitality | 2016 |
| Beulah Limited | Information & communication | 2007 |
| Beulah Scanners Ltd. | Health & social care | 2014 |
| Bevan House (Cheltenham) Ltd | Other services | 2021 |
| Bewisereferral Limited | Real estate | 2025 |
| Beynon Developments Limited | Construction | 2019 |
| Beynon Estates Limited | Real estate | 2019 |
| Beyond Brandlon Ltd | Health & social care | 2016 |
| Beyond Proof Ltd | Professional & scientific | 2025 |
| Beyond Social Media (UK) Limited | Information & communication | 2017 |
| Beyond the Blackboard Tutors Ltd | Education | 2021 |
| Beyond the Bubbles Ltd | Education | 2026 |
| BF Inter 2 Ltd | Administrative & support | 2025 |
| BF Inter Ltd | Administrative & support | 2016 |
| BFG Tree Surgery Ltd | Administrative & support | 2026 |
| BFH Business Solutions Limited | Professional & scientific | 2024 |
| Bgaa Holdings Limited | Real estate | 2023 |
| Bgdh Limited | Wholesale & retail | 2007 |
| Bgreater Ltd | Manufacturing | 2021 |
| BH Day Nursery Limited | Health & social care | 2024 |
| BH Jewellery Ltd | Wholesale & retail | 2025 |
| BHD Services Limited | Construction | 2015 |
| BHG Projects Ltd | Professional & scientific | 2021 |
| BHL 8083 Limited | Professional & scientific | 2019 |
| Bhode Limited | Health & social care | 2008 |
| BHR Resources Limited | Agriculture & fishing | 2017 |
| Bhra Holdings Ltd | Financial services | 2024 |
| BIA Trading Ltd | Wholesale & retail | 2013 |
| Biberian Barbers Ltd | Other services | 2022 |
| Bicester Plumbing and Heating Limited | Construction | 2005 |
| Bick Technical Limited | Professional & scientific | 2021 |
| Bicker FEN Solar Limited | Energy | 2020 |
| Bickford Management Ltd | Hospitality | 2008 |
| Biddulph Wealth Management Limited | Financial services | 2023 |
| Bielka Consulting Ltd | Professional & scientific | 2014 |
| Bifold Shop UK Ltd | Construction | 2018 |
| Big Cat Property Group Limited | Real estate | 2017 |
| Big Dog Development Limited | Administrative & support | 2009 |
| Big Green Cleaning Company Ltd | Administrative & support | 2013 |
| Big House Experience Limited | Administrative & support | 2016 |
| Big Pear Digital Limited | Professional & scientific | 2022 |
| Big Red Box PR Limited | Professional & scientific | 2012 |
| Big Stone Holdings Limited | Financial services | 2023 |
| Big T Home Improvements Limited | Construction | 2018 |
| Biggs Electrical Consutlancy Limited | Professional & scientific | 2025 |
| Bigpanda UK Ltd. | Administrative & support | 2021 |
| Bike Bros Ltd | Wholesale & retail | 2023 |
| Bikes G.B. (RYE) Ltd | Wholesale & retail | 2013 |
| Bilalikos Building Ltd | Construction | 2025 |
| Bill Allen (Cheltenham) Ltd | Wholesale & retail | 1953 |
| Billjack Security Limited | Professional & scientific | 2012 |
| Billy Barlow Limited | Real estate | 2025 |
| Billy the Tiler Ltd | Construction | 2022 |
| Bilton House Management Limited | Real estate | 2002 |
| Bimlabee Productions Ltd | Administrative & support | 2015 |
| Binati Ainalytics Ltd | Information & communication | 2025 |
| Binding Bars Limited | Hospitality | 2006 |
| Bingham Commercial Limited | Professional & scientific | 2010 |
| Bink Fine Art Ltd | Wholesale & retail | 2022 |
| Binkei Dentistry Limited | Financial services | 2021 |
| Biocatch (Emea) Limited | Administrative & support | 2022 |
| Bioidentical Hormone Therapy Ltd | Health & social care | 2021 |
| Bioira Ltd | Professional & scientific | 2019 |
| Biome Plants Ltd | Manufacturing | 2020 |
| BIP Dental Limited | Health & social care | 2018 |
| Birch Mews Management Limited | Households | 2020 |
| Birchstone LLP | | 2016 |
| Birdio Ltd | Information & communication | 2026 |
| Birdwood Garage Ltd | Wholesale & retail | 2023 |
| Birkenhead Battery Storage Limited | Energy | 2021 |
| Birmingham City Access Limited | Extraterritorial | 2025 |
| Bishops Cleeve Builders Ltd | Construction | 2019 |
| Bishops Cleeve Developments Ltd | Construction | 2025 |
| Bishops Cleeve Football Club Freehold Limited | Real estate | 2026 |