| Brandmain Properties Limited | Real estate | 1973 |
| Brandmatch Limited | Manufacturing | 1983 |
| Brandom Generator Services Ltd | Professional & scientific | 2018 |
| Brandonbury Limited | Real estate | 1982 |
| Brandpa Limited | Information & communication | 2013 |
| Brands Buster Limited | Wholesale & retail | 2025 |
| Brands by JHL Ltd | Wholesale & retail | 2024 |
| Brands Desire Ltd | Other services | 2019 |
| Brandshire Limited | Professional & scientific | 2018 |
| Brandso Group Limited | Financial services | 2024 |
| Brandtell Limited | Information & communication | 2025 |
| Brandy Developments Ltd | Construction | 2020 |
| Brandy Homes Ltd | Real estate | 2024 |
| Brandy Social Ltd | Professional & scientific | 2025 |
| Branksome Solutions Ltd | Manufacturing | 2014 |
| Branova Agency Ltd | Professional & scientific | 2025 |
| Bransons Home Garden and Aquatic Centre Limited | Wholesale & retail | 2003 |
| Brantier Limited | Construction | 2014 |
| Brasha Ventures Limited | Professional & scientific | 2026 |
| Brasskat Limited | Agriculture & fishing | 2018 |
| Bratherton Properties Ltd | Real estate | 2017 |
| Bratts Engineering Limited | Manufacturing | 2013 |
| Bratts Ladders Limited | Extraterritorial | 2007 |
| Braums- ATS Co Ltd | Wholesale & retail | 2025 |
| Braunstone Apartments Ltd | Real estate | 2025 |
| Bravic Maintenance Ltd | Administrative & support | 2024 |
| Bravio Ltd | Wholesale & retail | 2024 |
| Bravo Cleaning and Gardening Ltd | Administrative & support | 2026 |
| Bravo Lighting Limited | Manufacturing | 2015 |
| Bravotech Ltd | Other services | 2021 |
| Brawo Ltd | Hospitality | 2019 |
| Brayland Management Company Limited | Households | 2008 |
| Brayshaw Group Ltd | Information & communication | 2019 |
| Brazel Anaesthesia Services Limited | Health & social care | 2022 |
| Brazil Bahia Property Limited | Real estate | 2008 |
| Brazilian Cultural Centre CIC | Health & social care | 2019 |
| Braziliant Waxing Ltd | Other services | 2014 |
| BRD Creative Studios Limited | Construction | 2023 |
| Breach Navigator Ltd | Information & communication | 2024 |
| Bread and Butterflies Ltd | Hospitality | 2014 |
| Bread and Cake Limited | Wholesale & retail | 2025 |
| Break Barriers (Nottingham) Ltd | Health & social care | 2012 |
| Break Escape Nottingham Ltd | Arts & recreation | 2023 |
| Break Records Media Ltd | Information & communication | 2019 |
| Breakerz Limited | Wholesale & retail | 2019 |
| Breakfire Limited | Construction | 2017 |
| Breaking Ground Construction Ltd | Construction | 2014 |
| Breaking Ground Plant and Transport Ltd | Administrative & support | 2020 |
| Breaking Ground Projects Ltd | Construction | 2020 |
| Breaking Paranormal UK Ltd | Administrative & support | 2021 |
| Breaking Point Civils Limited | Construction | 2025 |
| Breaking Point Group Limited | Professional & scientific | 2025 |
| Breaking Point Solar Ltd | Construction | 2022 |
| Breakthrough Assets Holding Co Ltd | Financial services | 2025 |
| Breakthrough Grappling CIC | Education | 2025 |
| Breakthrough Maths UK Ltd | Education | 2025 |
| Breakthroughpoint Limited | Hospitality | 1999 |
| Breaston Homes Ltd | Real estate | 2024 |
| Breaston Stores Limited | Wholesale & retail | 2012 |
| Breathe Fresh Ltd | Information & communication | 2024 |
| Breathless Bathrooms Ltd | Construction | 2025 |
| Breck Hill Developments Ltd | Construction | 2014 |
| Breckon Holdings Limited | Real estate | 2016 |
| Breckon Property Ltd | Households | 2016 |
| Bredent Group UK Ltd | Wholesale & retail | 2019 |
| Breedon Electrical Fire & Security Limited | Manufacturing | 2014 |
| Breedon House Group Limited | Extraterritorial | 2008 |
| Breedon House Holdings Limited | Extraterritorial | 2010 |
| Breedon House Nurseries Limited | Health & social care | 1996 |
| Breedon House Properties Limited | Real estate | 2007 |
| Breedon Property Design Ltd | Real estate | 2017 |
| Breeez Limited | Extraterritorial | 2018 |
| Breeze Air Conditioning Ltd | Energy | 2021 |
| Breeze and Beats Ltd | Administrative & support | 2026 |
| Breeze Automotive Ltd | Wholesale & retail | 2026 |
| Breeze Capital Limited | Financial services | 2022 |
| Breeze Connect Ltd. | Education | 2002 |
| Breeze Corporate Finance Limited | Financial services | 2018 |
| Breeze Finance 1 Limited | Financial services | 2022 |
| Breeze Finance 2 Limited | Financial services | 2022 |
| Breezy Lettings Ltd | Real estate | 2024 |
| Brelsford Aviation Limited | Administrative & support | 2006 |
| Brenby Ltd | Real estate | 2026 |
| Brendan Laverty Consulting Limited | Professional & scientific | 2012 |
| Brendan's Catering Limited | Wholesale & retail | 2019 |
| Brendeck Chemicals Limited | Transport & logistics | 2016 |
| Brenell Label Company Limited | Manufacturing | 1999 |
| Brenell Labels Holdings Limited | Manufacturing | 2025 |
| Brennan Engineering Services Ltd | Professional & scientific | 2023 |
| Brennan’S PUB Co Limited | Hospitality | 2012 |
| Brentnall and Hill Properties Limited | Real estate | 2003 |
| Brenton Smith Limited | Real estate | 2014 |
| Brentwood V.E. Limited | Other services | 2007 |
| Brett Consulting Limited | Professional & scientific | 2020 |
| Brettell Windows Limited | Wholesale & retail | 2002 |
| Brevantis Holdings Ltd | Wholesale & retail | 2025 |
| Brew 160 Ltd | Hospitality | 2025 |
| Brew and Belong Ltd | Hospitality | 2025 |
| Brew and Spin Ltd | Hospitality | 2024 |
| Breweng Technical Services Ltd | Professional & scientific | 2026 |