| Brick Enterprises Ltd | Manufacturing | 2018 |
| Brick Frozen Ltd | Manufacturing | 2020 |
| Brick Legacy Ltd | Wholesale & retail | 2024 |
| Bricks & Digital Ltd | Information & communication | 2025 |
| Bricks to Abode Ltd | Real estate | 2022 |
| Brickvaultuk Ltd | Wholesale & retail | 2025 |
| Bricpoint Limited | Wholesale & retail | 2014 |
| Bridewell Beauty Ltd | Other services | 2019 |
| Bridewell Trading Limited | Financial services | 2025 |
| Bridge Caterers Limited | Hospitality | 2018 |
| Bridge Court Norwich Limited | Real estate | 2020 |
| Bridge Creative Ltd | Information & communication | 2025 |
| Bridge D&M Limited | Professional & scientific | 2015 |
| Bridge FM Limited | Administrative & support | 2009 |
| Bridge Gate CT Holding Company Ltd | Construction | 2026 |
| Bridge Homes (Norwich) Limited | Construction | 2015 |
| Bridge Inn Fishery Ltd | Agriculture & fishing | 2026 |
| Bridge Kebab HUT Ltd | Hospitality | 2023 |
| Bridge Network Telecom Ltd | Information & communication | 2020 |
| Bridge Orthopaedic Services Ltd | Health & social care | 2009 |
| Bridge Street Prime Properties Ltd | Real estate | 2021 |
| Bridge Trust of Great Yarmouth Limited | Other services | 2003 |
| Bridgemaster Property Limited | Real estate | 2024 |
| Bridgesteer Limited | Financial services | 2025 |
| Bridget Hemmant EYE Surgery Limited | Health & social care | 2019 |
| Bridgewater Marine Ltd | Manufacturing | 2024 |
| Bridgewell Finance Ltd | Financial services | 2026 |
| Bridport Capital Limited | Real estate | 2000 |
| Brig Square Norfolk Limited | Extraterritorial | 2004 |
| Briggs and SON Masonry Ltd | Manufacturing | 2025 |
| Briggs-Mcgilley Associates Ltd | Professional & scientific | 2023 |
| Briggstreet.Com Limited | Wholesale & retail | 2016 |
| Bright Buoy Productions Limited | Information & communication | 2018 |
| Bright Frontier Limited | Wholesale & retail | 2022 |
| Bright Future Developments ST Faiths Ltd | Real estate | 2017 |
| Bright Green Edge CIC | Professional & scientific | 2026 |
| Bright Light Technologies Ltd | Construction | 2022 |
| Bright Motion Projects Ltd | Professional & scientific | 2025 |
| Bright Outsourcing Solutions Ltd | Other services | 2020 |
| Bright Secure Future Limited | Health & social care | 2015 |
| Bright Stars Agency Ltd | Administrative & support | 2019 |
| Brightcoats Ltd | Professional & scientific | 2026 |
| Brighter Energy Homes Ltd | Households | 2014 |
| Brighton Bi-Folds Limited | Manufacturing | 2014 |
| Brightside Electrical Norfolk Ltd | Construction | 2024 |
| Brightside Electrical Services (Norwich) Ltd | Construction | 2025 |
| Brightstar (Property Investments) Limited | Real estate | 2000 |
| Brightsteps Education Ltd | Education | 2025 |
| Brilliant Endeava Ltd | Professional & scientific | 2025 |
| Brimstone Racing Ltd | Wholesale & retail | 2024 |
| Bringwood Developments Ltd | Construction | 2021 |
| Brinkcraft Limited | Extraterritorial | 1959 |
| Briskit Ltd | Hospitality | 2025 |
| Bristol & Exeter Railway Company Limited | Transport & logistics | 2001 |
| Bristol Car & Van Hire Limited | Administrative & support | 1994 |
| Bristol Daily Fresh Ltd | Wholesale & retail | 2026 |
| Bristol Flat Roofing Solutions Ltd | Construction | 2017 |
| Brit Chopper Customs Limited | Wholesale & retail | 2014 |
| Brit Fire Limited | Extraterritorial | 2012 |
| Brit Signature Ltd | Wholesale & retail | 2021 |
| Britaniacrest Services Limited | Professional & scientific | 2005 |
| Britannia Blinds Norfolk Limited | Administrative & support | 2006 |
| Britannia Fire Limited | Administrative & support | 2009 |
| Britannia Pier (Great Yarmouth) Ltd | Arts & recreation | 2022 |
| Britannia Qualifications and Awards Ltd | Education | 2018 |
| Britannia Rose Ltd | Information & communication | 2018 |
| Britannia Safety & Training Holdings Limited | Administrative & support | 2023 |
| Britannia Scaffolding & Hire Services Limited | Construction | 2013 |
| Britannic Oilfield Services Limited | Mining & quarrying | 1990 |
| British Beet Research Organisation | Agriculture & fishing | 2000 |
| British Nuclear Cardiac Society Limited | Public administration | 2023 |
| Britodds.Com Limited | Information & communication | 2003 |
| Britons Arms Limited | Hospitality | 2021 |
| Britton Court Energy Centre Limited | Energy | 2022 |
| Brixoniq Ltd | Information & communication | 2026 |
| Broad Air Services Ltd | Wholesale & retail | 2006 |
| Broad Farm Limited | Hospitality | 1977 |
| Broad FEN Ltd | Extraterritorial | 2020 |
| Broad Horizons Education Trust | Education | 2012 |
| Broadcast Systems Europe Limited | Other services | 2017 |
| Broadcasting Connected Ltd | Information & communication | 2021 |
| Broadfields Developments Limited | Construction | 2006 |
| Broadgate Arch Unlimited | Real estate | 1987 |
| Broadland (UK) Limited | Wholesale & retail | 2002 |
| Broadland Aerials Limited | Construction | 2006 |
| Broadland Agility Dog Club Ltd | Arts & recreation | 2024 |
| Broadland Agriculture Ltd | Wholesale & retail | 2013 |
| Broadland Alarms Limited | Manufacturing | 2011 |
| Broadland Auto Care Limited | Wholesale & retail | 2003 |
| Broadland Boilers Limited | Construction | 2007 |
| Broadland Builders Ltd | Construction | 2025 |
| Broadland Cars Ltd | Wholesale & retail | 2024 |
| Broadland Chimneys & Flues Limited | Construction | 2026 |
| Broadland Computers Limited | Wholesale & retail | 2005 |
| Broadland Controls Limited | Construction | 2026 |
| Broadland Country Hotels Ltd | Hospitality | 2019 |
| Broadland Country Sports Limited | Wholesale & retail | 2019 |
| Broadland Detailing Limited | Professional & scientific | 2013 |
| Broadland Development Services Ltd | Construction | 2017 |
| Broadland Digital Limited | Manufacturing | 2003 |