| Bourton Vale Parking Limited | Other services | 2014 |
| Bourton Village Apartment Limited | Hospitality | 2025 |
| Bourton-On-The-Water Day Nursery Ltd | Education | 2016 |
| Bourton-On-The-Water Primary Academy | Education | 2012 |
| Bowbridge Wharf Management Company Limited | Households | 2017 |
| Bowbrook CC Ltd | Hospitality | 2020 |
| Bowbrook Developments Limited | Construction | 2017 |
| Bowbrook Lodges Limited | Hospitality | 2017 |
| Bowdens Location Catering Ltd | Hospitality | 2013 |
| Bowers Bark & RAW Limited | Wholesale & retail | 2026 |
| Bowers Hill Farm Limited | Agriculture & fishing | 2021 |
| Bowes Associates Limited | Education | 2011 |
| Bowes Consulting Ltd | Professional & scientific | 2007 |
| Bowmoor Bidco Limited | Manufacturing | 2018 |
| Bowmoor Topco Limited | Manufacturing | 2018 |
| Bowness AI Limited | Professional & scientific | 2024 |
| Bownham View (Rodborough) Management Company Limited | Households | 2016 |
| Bowyer Rooms Ltd | Real estate | 2017 |
| Box Capital Commercial Ltd | Construction | 2024 |
| Box Capital Developments Limited | Construction | 2023 |
| Box Capital Ltd | Construction | 2022 |
| Boxed OFF Productions Ltd | Information & communication | 2022 |
| Boxer Property Rentals Limited | Real estate | 2020 |
| Boyal & Co Solicitors Ltd | Professional & scientific | 2022 |
| Boyce Enterprises Limited | Construction | 2008 |
| Boyce Property Holdings Ltd | Real estate | 2022 |
| Boyd Blinds Ltd | Construction | 2026 |
| Boyes Building & Development Limited | Construction | 2005 |
| Boyson Homes Limited | Construction | 1984 |
| Bozhidar Cargo Limited | Transport & logistics | 2024 |
| BP Investment Holdings Ltd | Real estate | 2024 |
| BP Motor Bodybuilders and Engineers Limited | Manufacturing | 2010 |
| Bpatient Health Care Limited | Health & social care | 2022 |
| BPC Partners Group Ltd | Extraterritorial | 2009 |
| BPC Partners Limited | Professional & scientific | 2001 |
| BPC Partners Properties Ltd | Households | 2009 |
| BPE Services Limited | Administrative & support | 2007 |
| BPE Solicitors LLP | | 2009 |
| Bqes LLP | | 2018 |
| BR Corporate Trustees Limited | Professional & scientific | 2018 |
| Braces for YOU Limited | Financial services | 2009 |
| Bracewell Limited | Administrative & support | 2009 |
| Bradbury Designs Limited | Administrative & support | 2008 |
| Bradley & Bradley Ltd | Professional & scientific | 2021 |
| Bradley Drive Management Company Limited | Households | 2017 |
| Bradwest Safety Company LLP | | 2004 |
| Braeburn Studios Limited | Manufacturing | 2024 |
| Brain Consulting Ltd | Professional & scientific | 2024 |
| Brain Partners Equine Vets Ltd | Professional & scientific | 2011 |
| Brainy Creators Ltd | Professional & scientific | 2023 |
| Braithwaite Brooks HR Limited | Professional & scientific | 2012 |
| Brake Lathes UK Ltd | Manufacturing | 2025 |
| Bramble Investments Limited | Real estate | 1958 |
| Bramble Properties (Cheltenham) Limited | Households | 2023 |
| Brampton Abbotts Management Company Limited | Households | 2024 |
| Bramsar Limited | Real estate | 1977 |
| Bramwells Limited | Other services | 2003 |
| Branch Construction Ltd | Construction | 2025 |
| BRANCH2 Limited | Construction | 2011 |
| Branchsale Limited | Real estate | 2005 |
| Brand Atomic Ltd | Professional & scientific | 2020 |
| Brand Box International Holdings Limited | Financial services | 2022 |
| Brand Box International Limited | Wholesale & retail | 2021 |
| Brand Confession Ltd | Professional & scientific | 2016 |
| Brand HUT Transformation Ltd | Wholesale & retail | 2024 |
| Branded Eyewear Ltd | Wholesale & retail | 2025 |
| Brandon W Telecoms Ltd | Construction | 2026 |
| Brands Yeah Ltd | Wholesale & retail | 2021 |
| Brandseam Ltd | Professional & scientific | 2014 |
| Branmesh Limited | Real estate | 2015 |
| Brasasystems Ltd | Information & communication | 2020 |
| Brasserie (BD) Ltd | Hospitality | 2019 |
| Brasserie Group LLP | | 2019 |
| Brave Fine Art Ltd | Wholesale & retail | 2017 |
| Brave Human Capital Group Limited | Professional & scientific | 2016 |
| Bray Finance Limited | Financial services | 2024 |
| Bray Holdco Limited | Financial services | 2024 |
| Bray Midco Limited | Financial services | 2024 |
| Brazen Esports Limited | Manufacturing | 2017 |
| Break for IT Media Limited | Arts & recreation | 2011 |
| Break Free Agency Limited | Professional & scientific | 2025 |
| Brean Theme Park Limited | Arts & recreation | 2002 |
| Bredon Hill Construction Limited | Construction | 2023 |
| Bredon Investments Ltd | Professional & scientific | 2026 |
| Bredon Motor Company Limited | Construction | 1974 |
| Brenda Higgs Ltd | Wholesale & retail | 2009 |
| Brensham Court Management Limited | Hospitality | 1979 |
| Bretforton Marketing Services Limited | Professional & scientific | 2010 |
| Brewed by Amber Ltd | Hospitality | 2025 |
| Brewery Yard Limited | Real estate | 1988 |
| BRG Technologies Limited | Professional & scientific | 2011 |
| BRH Landscapes Ltd | Construction | 2022 |
| Briararch Developments Limited | Construction | 1987 |
| Briarfields Cheltenham Ltd | Hospitality | 2009 |
| Brick and Brew Limited | Hospitality | 2020 |
| Brick Capital Limited | Professional & scientific | 2012 |
| Brick Kiln Composites 2025 Ltd | Financial services | 2025 |
| Brick Kiln Composites Group Ltd | Financial services | 2025 |
| Bridal Bows Ltd | Manufacturing | 2013 |
| Bridge Intelligence Group Ltd | Professional & scientific | 2025 |