| Bridgend HGV Driver Training Limited | Education | 2023 |
| Bridgend Leisure Vehicles Ltd | Wholesale & retail | 2016 |
| Bridgend Lets Limited | Real estate | 2020 |
| Bridgend Municipal Bowling Club Ltd | Arts & recreation | 2020 |
| Bridgend Nails Ltd | Other services | 2022 |
| Bridgend Neurorehab Limited | Health & social care | 2022 |
| Bridgend Office Furniture Limited | Professional & scientific | 1998 |
| Bridgend Plant Limited | Construction | 1975 |
| Bridgend Plant Services Ltd | Manufacturing | 2020 |
| Bridgend Pride Limited | Arts & recreation | 2026 |
| Bridgend Rads Ltd | Manufacturing | 2019 |
| Bridgend Ravens Rugby Club Ltd | Arts & recreation | 2005 |
| Bridgend Rent-A-Car Ltd. | Administrative & support | 1988 |
| Bridgend Software Limited | | 1987 |
| Bridgend Storewithus Limited | Wholesale & retail | 2010 |
| Bridgend Taxi Leasing Ltd | Administrative & support | 2020 |
| Bridgend Taxis Ltd | Transport & logistics | 2013 |
| Bridgend Trading Company Ltd | Wholesale & retail | 2015 |
| Bridgend Transport Consultancy Ltd | Transport & logistics | 2025 |
| Bridgend Valleys Railway Company Limited | Transport & logistics | 1994 |
| Bridgend Van Care Limited | Wholesale & retail | 2023 |
| Bridgend Van Centre Limited | Wholesale & retail | 2012 |
| Bridgend Vans Limited | Financial services | 2021 |
| Bridgend Wash & Valet Ltd | Administrative & support | 2019 |
| Bridgeside Landscapes Limited | Administrative & support | 2018 |
| Bridgeside Roofing Limited | Construction | 2025 |
| Bridgica Limited | Professional & scientific | 2018 |
| Bright File Ltd | Real estate | 2020 |
| Brind Holdings Ltd | Financial services | 2020 |
| Bristol & Clifton Estates Limited | Other services | 1994 |
| Bristol Surveyors and Valuers Limited | Professional & scientific | 2014 |
| Britcare Health Recruitment Ltd | Health & social care | 2019 |
| Broadcast Traffic Systems Limited | Information & communication | 2001 |
| Broadlands Dental Surgery Limited | Health & social care | 2024 |
| Broadlands Electrical Services Ltd | Construction | 2021 |
| Broadlands Fencing and Gates Ltd | Administrative & support | 2025 |
| Broadshaw Limited | Financial services | 2022 |
| Brock Real Estate Ltd | Real estate | 2023 |
| Bromrate Limited | Extraterritorial | 2025 |
| Bromreed Limited | Extraterritorial | 2024 |
| Bromtone Limited | Extraterritorial | 2024 |
| Bromview Limited | Energy | 2017 |
| Bronze Berry Limited | Real estate | 1999 |
| Bronzed by Bassett Ltd | Other services | 2026 |
| Brooklands People Development Services Ltd | Professional & scientific | 2019 |
| Brookson (6096A) Limited | Administrative & support | 2007 |
| Brookworth Care Limited | Health & social care | 2018 |
| Broughshire Limited | Wholesale & retail | 1979 |
| Bruma Properties Ltd | Real estate | 2026 |
| Bryan-Alexander Limited | Transport & logistics | 1978 |
| Bryn Glamping Limited | Hospitality | 2019 |
| Bryn Golau Stores Limited | Wholesale & retail | 2024 |
| Bryncethin RFC Limited | Arts & recreation | 2012 |
| Bryncethin Stores Ltd | Wholesale & retail | 2016 |
| Brynheulog Cottage Ltd | Hospitality | 2024 |
| Bryntirion Care Ltd | Health & social care | 2018 |
| Bscs Clothing & Apparel Limited | Wholesale & retail | 2025 |
| BTB Installation Services Ltd | Manufacturing | 2009 |
| Bubble&Squeak Cafe Ltd | Hospitality | 2025 |
| Buggy Bags Ltd | Manufacturing | 2010 |
| Buildcare 24/7 Limited | Construction | 2003 |
| Building Repair Waterproofing (UK) Limited | Wholesale & retail | 1994 |
| Bujakcoffee Ltd | Manufacturing | 2024 |
| Bulk Milk Distribution Ltd | Manufacturing | 2015 |
| Bull & Smith Properties Ltd | Real estate | 2023 |
| Bume International Ltd | Other services | 2024 |
| Bume Limited | Other services | 2022 |
| Burgess Property Enterprises Ltd | Hospitality | 2019 |
| Burnt Island Occasions Ltd | Manufacturing | 2019 |
| Burtons Carpentry Limited | Construction | 2024 |
| Bushcraft Adventures Ltd | Arts & recreation | 2019 |
| Business and Creative Services Ltd | Professional & scientific | 2013 |
| Business Finance NOW Ltd | Financial services | 2018 |
| Business Growth Limited | Professional & scientific | 2026 |
| Business in Focus Limited | Administrative & support | 1990 |
| Business Photos Wales Ltd | Information & communication | 2014 |
| Business Sense FM Limited | Administrative & support | 2012 |
| Bvalued Ltd. | Real estate | 2004 |
| BWP Properties Ltd | Real estate | 2024 |
| BY Victoria Ltd | Manufacturing | 2022 |
| Bydivinedesigns Ltd | Arts & recreation | 2026 |
| Byggebygge Ltd | Administrative & support | 2009 |
| C C Associates (Accounting) Limited | Professional & scientific | 2010 |
| C J Heating Services Limited | Construction | 2015 |
| C J P Sales Limited | Other services | 1985 |
| C K Western Property's Ltd | Households | 2023 |
| C N Rentals and Property Limited | Construction | 2025 |
| C&D Property Solutions (Bridgend) Limited | Real estate | 2019 |
| C&M Lewis Properties Limited | Hospitality | 2022 |
| C&P Contractors Limited | Construction | 2023 |
| C&S Building Co Limited | Construction | 2019 |
| C&S Property Developers Ltd | Real estate | 2025 |
| C2S3 Crowd Safety Management Limited | Professional & scientific | 2026 |
| C5 Business Centres Limited | Real estate | 2010 |
| Cabalen Oriental Foods Limited | Hospitality | 2008 |
| Cabango Properties Limited | Real estate | 2020 |
| Cablequest Limited | Real estate | 2000 |
| Cables Electrical Wholesale Limited | Wholesale & retail | 2014 |
| Cacciani Solutions Ltd | Administrative & support | 2025 |
| Cactus Carpentry Ltd | Manufacturing | 2025 |