| Blue Monkey Sales Limited | Arts & recreation | 2014 |
| Blue-Green Marketing Consultants Ltd | Professional & scientific | 2016 |
| Bluepearl Enterprises Ltd | Wholesale & retail | 2022 |
| Bluestone GTR Training Ltd | Education | 2026 |
| Bluesweets Limited | Manufacturing | 2008 |
| Blushin Beauty Limited | Other services | 2025 |
| BM Media Consulting Limited | Professional & scientific | 2020 |
| Bmtc Limited | Education | 2012 |
| Bobble HAT Media Ltd | Information & communication | 2017 |
| Bocksy Ltd | Wholesale & retail | 2023 |
| Bodrach Generation Ltd | Energy | 2013 |
| Boe's Beauty Limited | Other services | 2017 |
| BOF Group Limited | Wholesale & retail | 1995 |
| Bogdan Tistu Limited | Transport & logistics | 2018 |
| Bont Network-Solutions Ltd | Construction | 2025 |
| Bont Sportswear Ltd | Wholesale & retail | 2024 |
| Boom Clap Pro Ltd | Information & communication | 2019 |
| Boparai Engineering Ltd | Manufacturing | 2024 |
| Bosphorus Barber Ltd | Other services | 2024 |
| Boss Business Interiors Limited | Wholesale & retail | 2007 |
| Boujiee Travel Limited | Administrative & support | 2023 |
| Bounce Training Limited | Education | 2012 |
| BOW Roofing & Property Maintenance Ltd | Construction | 2025 |
| Bow&Co Homes Limited | Real estate | 2022 |
| Bowen Property Rentals Limited | Real estate | 2017 |
| Bowla Ltd | Administrative & support | 2016 |
| Bowtec Group Limited | Financial services | 2025 |
| Bowtec Heavy Lift Limited | Professional & scientific | 2025 |
| Bowtec Training Services Limited | Professional & scientific | 2022 |
| Boxdotuk Ltd | Wholesale & retail | 2025 |
| BOYZTOYS1 Limited | Wholesale & retail | 2023 |
| Bozkurt (Bridgend) Ltd | Hospitality | 2018 |
| Brackenbury Holdings Limited | Real estate | 2021 |
| Brackla Aggregates Limited | Wholesale & retail | 2020 |
| Brackla Chiropractic Limited | Health & social care | 2012 |
| Brackla Engineering Co Limited | Extraterritorial | 1976 |
| Brackla Enterprises Limited | Arts & recreation | 2012 |
| Brackla Holdings Limited | Extraterritorial | 1994 |
| Brackla Properties Limited | Construction | 2022 |
| Brackla RFC Ltd | Hospitality | 2025 |
| Brackla-Nodor Sales Limited | Professional & scientific | 1994 |
| Bramble & Co Holdings Ltd | Real estate | 2024 |
| Brannocks Close 1967 Limited | Extraterritorial | 2015 |
| Brantridge Ltd | Professional & scientific | 2024 |
| Branzell (Holdings) Limited | Financial services | 2023 |
| Branzell Limited | Professional & scientific | 2008 |
| Brck Group PLC | Administrative & support | 2017 |
| Brecknock Wildlife Trust Limited | Other services | 1964 |
| Brecon Brewery Ltd | Wholesale & retail | 2020 |
| Brecon MOT and Tachograph Centre Limited | Wholesale & retail | 2007 |
| Bren Group Limited | Construction | 2026 |
| Brett & Potts Investments Ltd | Real estate | 2016 |
| Brevity Limited | Professional & scientific | 2007 |
| Brewery Field Complex Ltd | Hospitality | 2023 |
| Brewery Field Limited | Administrative & support | 2009 |
| Brgr PEN Y Bont Limited | Hospitality | 2023 |
| Brian G Thomas Funeral Directors Ltd | Other services | 2024 |
| Brian Newton Leisure Limited | Extraterritorial | 1997 |
| Brick-Ability Ltd. | Construction | 1985 |
| Brick-Link Limited | Wholesale & retail | 1988 |
| Brickability Enterprises Investments Limited | Administrative & support | 2016 |
| Brickability Group Limited | Administrative & support | 2016 |
| Brickability UK Holdings Limited | Professional & scientific | 2011 |
| Brickmongers (Wessex) Ltd | Wholesale & retail | 2009 |
| Bridge Doner Limited | Hospitality | 2020 |
| Bridge Marine Ltd | Professional & scientific | 2024 |
| Bridge Mentoring Plus Scheme | Education | 2002 |
| Bridge Research Ltd | Professional & scientific | 2023 |
| Bridgend 1012 Ltd | Hospitality | 2013 |
| Bridgend Access Scaffolding Erectors Ltd | Construction | 2017 |
| Bridgend AFC Limited | Financial services | 1977 |
| Bridgend and District Resource for Children With Disabilities | Education | 1994 |
| Bridgend Athletic RFC Limited | Arts & recreation | 2012 |
| Bridgend Automobile Club Limited | Arts & recreation | 1983 |
| Bridgend Bathroom Supplies Ltd | Wholesale & retail | 2026 |
| Bridgend Bean Ltd | Hospitality | 2024 |
| Bridgend Brick Holdings Ltd | Financial services | 2020 |
| Bridgend Brick Supplies Limited | Wholesale & retail | 2019 |
| Bridgend Brickwork Limited | Construction | 2017 |
| Bridgend Carers Centre | Administrative & support | 2005 |
| Bridgend Carpet Centre Limited | Wholesale & retail | 1972 |
| Bridgend Cleans Ltd | Administrative & support | 2023 |
| Bridgend Community Transport Ltd | Health & social care | 1991 |
| Bridgend Country Show Limited | Other services | 2022 |
| Bridgend County Borough Citizens Advice Bureau | Information & communication | 2010 |
| Bridgend County Contractors Limited | Construction | 1996 |
| Bridgend Curry House Limited | Hospitality | 2025 |
| Bridgend Curry Ltd | Hospitality | 2023 |
| Bridgend Decorating Centre Limited | Wholesale & retail | 2008 |
| Bridgend Doggy Day Care Ltd | Other services | 2022 |
| Bridgend Driver Training Services Limited | Education | 2017 |
| Bridgend Electrical Limited | Manufacturing | 2008 |
| Bridgend Entertainment Limited | Hospitality | 2026 |
| Bridgend Extrusion Limited | Manufacturing | 2012 |
| Bridgend Fabrications Ltd | Manufacturing | 2026 |
| Bridgend Fast Food Ltd | Hospitality | 2026 |
| Bridgend FFM Ltd | Hospitality | 2025 |
| Bridgend Glass and Glazing Ltd | Manufacturing | 2024 |
| Bridgend Golf Limited | Arts & recreation | 2013 |
| Bridgend Hand Car Wash Limited | Other services | 2014 |