| BRE Constructions Ltd | Real estate | 2026 |
| Breach Reporter Ltd | Information & communication | 2022 |
| Bread Birmingham Ltd | Administrative & support | 2017 |
| Bread for Orphans Limited | Public administration | 2022 |
| Breadbybetty Ltd | Manufacturing | 2026 |
| Breadcrumbz Ltd | Hospitality | 2025 |
| Break Holidays Ltd | Administrative & support | 2026 |
| Break Mission (Donate to Participate) CIC | Arts & recreation | 2014 |
| Breakbread Ltd | Hospitality | 2025 |
| Breakdown Rugby Analysis Ltd | Real estate | 2017 |
| Breakers Gamble Limited | Hospitality | 2025 |
| Breakfast at Destiny's Ltd | Hospitality | 2023 |
| Breakfast Cafe Ltd | Hospitality | 2019 |
| Breakfast Station Ltd | Hospitality | 2023 |
| Breakheart Ltd | Construction | 1999 |
| Breaking the Silence (Btsuk) | Health & social care | 2013 |
| Breakingthecoconut Ltd | Professional & scientific | 2023 |
| Breakthrough Cleaning Ltd | Administrative & support | 2026 |
| Bream Carpets & Flooring Limited | Wholesale & retail | 2018 |
| Bream Empire Limited | Real estate | 2020 |
| Bream Investments Limited | Real estate | 2022 |
| Bream Limited | Wholesale & retail | 2021 |
| Breason Care Supported Living C.I.C. | Health & social care | 2022 |
| Breast Oncology & Aesthetics Ltd | Health & social care | 2024 |
| Breathe in Media Ltd | Information & communication | 2014 |
| Brecon Catering Ltd | Hospitality | 2015 |
| Brecon Homes Ltd | Real estate | 2020 |
| Bredon Gate (Management Company) Limited | Real estate | 2020 |
| Bree Automotive Ltd | Wholesale & retail | 2015 |
| Breeandgeesi Ltd | Real estate | 2023 |
| Breen Inc Ltd | Financial services | 2021 |
| Breeze Healthcare Ltd | Administrative & support | 2022 |
| Breeze Kitchens & Bedrooms Ltd | Manufacturing | 2016 |
| Breeze Laboratory a Limited | Information & communication | 2020 |
| Breeze Medical Ltd | Health & social care | 2017 |
| Breeze Recruitment (Holdings) Limited | Financial services | 2016 |
| Breeze Recruitment Driveforce (Holdings) Limited | Financial services | 2011 |
| Breeze Recruitment Driveforce Limited | Administrative & support | 2010 |
| Breeze Recruitment Limited | Administrative & support | 2016 |
| Breeze Resources Limited | Administrative & support | 2003 |
| Breezenet Consulting Limited | Information & communication | 2016 |
| Breezy Days Ltd | Other services | 2023 |
| Brekky 'N' More Ltd | Hospitality | 2025 |
| Brelleca Ltd | Wholesale & retail | 2025 |
| Bren Illustrations Ltd Co. Limited | Other services | 2013 |
| Brendamay Ltd | Wholesale & retail | 2021 |
| Brendan Fleming Limited | Professional & scientific | 2013 |
| Brendan LEE Mooney Limited | Transport & logistics | 2017 |
| Brennan Broadcasting Installations Limited | Information & communication | 2017 |
| Brentley Promotions Ltd | Arts & recreation | 2012 |
| Brentside Properties Limited | Households | 2002 |
| Brentwood Electrical & AV Services Limited | Construction | 2014 |
| Breslins Birmingham Ltd | Professional & scientific | 1998 |
| Breslins Club Birmingham Ltd | Professional & scientific | 2020 |
| Breslins Club Group Ltd | Professional & scientific | 2020 |
| Breslins Club Leamington Ltd | Professional & scientific | 2020 |
| Breslins Club Wolverhampton Ltd | Professional & scientific | 2020 |
| Breslins Consulting Ltd | Professional & scientific | 2006 |
| Breslins Coventry Ltd | Professional & scientific | 1995 |
| Breslins Group Ltd | Professional & scientific | 1998 |
| Breslins HR Ltd | Administrative & support | 2008 |
| Breslins IT Ltd | Information & communication | 2010 |
| Breslins Marketing Ltd | Professional & scientific | 2008 |
| Breslins Private Equity Ltd | Administrative & support | 1998 |
| Breslins Solihull Ltd | Professional & scientific | 2014 |
| Breslins Tax Ltd | Professional & scientific | 2014 |
| Breslins Wealth Management Ltd | Professional & scientific | 2007 |
| Breslins Worcester Ltd | Professional & scientific | 2014 |
| Bretby House (Midlands) Limited | Health & social care | 2022 |
| Breton Inter LP | | 2015 |
| Brett Alan International Limited | Administrative & support | 2009 |
| Brett Global Technologyy Ltd | Wholesale & retail | 2025 |
| Brettania LP | | 2017 |
| Brevet Ltd | Professional & scientific | 2023 |
| Brevial Vitality Balance Limited | Manufacturing | 2024 |
| Brevixa Limited | Professional & scientific | 2026 |
| Brewer Bidco Limited | Administrative & support | 2021 |
| Brewer Holdco Limited | Administrative & support | 2021 |
| Brewer Midco Limited | Administrative & support | 2021 |
| Brewer Topco Limited | Administrative & support | 2021 |
| Brewin' Coffee Limited | Manufacturing | 2026 |
| Brewnova Global Holding Limited | Wholesale & retail | 2025 |
| Brewster Healthcare CIC Ltd | Health & social care | 2026 |
| Breymoore Limited | Professional & scientific | 2019 |
| Brezzeman Logistics Limited | Transport & logistics | 2019 |
| BRG Concessions Limited | Hospitality | 2022 |
| BRG Properties Limited | Real estate | 2004 |
| BRG Social Care Limited | Health & social care | 2018 |
| BRG Star Limited | Hospitality | 2024 |
| Brgr Box Ltd | Hospitality | 2021 |
| Brgri Ltd | Hospitality | 2022 |
| BRI Air Validation Services Ltd | Professional & scientific | 2012 |
| BRI7ISH Glamm Ltd | Wholesale & retail | 2024 |
| Brian Charles Editing Ltd | Information & communication | 2013 |
| Brian FOX and Associates Limited | Professional & scientific | 2002 |
| Brian Hook & Associates Ltd | Real estate | 2015 |
| Briars Barn Limited | Agriculture & fishing | 2008 |
| Briarswood Residents Management Company Limited | Households | 2024 |
| Briba Impex Ltd | Wholesale & retail | 2024 |
| Brice Baker Limited | Professional & scientific | 2016 |