| Brentnall Developments Ltd | Construction | 2025 |
| Brentnall Holdings Ltd | Construction | 2025 |
| Brewin Books Limited | Information & communication | 1996 |
| Brewingworld (Lichfield) Limited | Hospitality | 2015 |
| Briar Automotive Consultancy Ltd | Professional & scientific | 2025 |
| Brick POD Spaces (Kyle) Ltd | Real estate | 2026 |
| Briggs Bros. (Engineers) Limited | Manufacturing | 1957 |
| Briggs Clark Ltd | Financial services | 2018 |
| Briggs Holdings Limited | Financial services | 2024 |
| Bright Spider Ltd | Real estate | 2023 |
| Brighter Skies Transformational Therapy Ltd | Health & social care | 2023 |
| Bristow & Sutor | Administrative & support | 1979 |
| Bristow & Sutor (Services) Limited | Administrative & support | 2017 |
| Bristow & Sutor Management Services Limited | Financial services | 2017 |
| Britannia Plant & Machinery Ltd | Wholesale & retail | 2025 |
| Britsify Ltd | Wholesale & retail | 2021 |
| Broad Lane Developments Limited | Construction | 1997 |
| Broad Oak Financial Solutions Limited | Financial services | 2023 |
| Broadfield Stables Limited | Construction | 2012 |
| Broadmorton Ltd | Agriculture & fishing | 2024 |
| Broadway Property (Worcester) Ltd | Real estate | 2018 |
| Broadway Removals Ltd | Transport & logistics | 2025 |
| Brockhill Properties Limited | Real estate | 2005 |
| Brockhill Property Rentals Ltd | Real estate | 2020 |
| Broe & Co Investments Limited | Real estate | 2024 |
| Broker Connect Limited | Extraterritorial | 1995 |
| Bromsgrove and Redditch Network | Transport & logistics | 2006 |
| Bromsgrove BUS & Coach Company Limited | Transport & logistics | 2003 |
| Bromsgrove Crafty Monkeys Limited | Hospitality | 2017 |
| Bromwich Heights Limited | Hospitality | 2025 |
| Bromyard Enterprises Limited | Construction | 1967 |
| Bromyard Investments Ltd | Real estate | 2021 |
| Bronsons Ltd | Manufacturing | 2012 |
| Bronuts and Tea Limited | Manufacturing | 2025 |
| Brood Food Ltd | Hospitality | 2020 |
| Brookes Court Management Company Limited | Households | 2018 |
| Brookside Engineering Ltd | Manufacturing | 2011 |
| Brookside Property Search Ltd | Administrative & support | 2017 |
| Broom Fabrications Limited | Construction | 2010 |
| Broomco (3051) Limited | Professional & scientific | 2002 |
| Brosebud Limited | Professional & scientific | 2022 |
| Broughsons Storage and Distribution Ltd | Transport & logistics | 2010 |
| Broughton Electro Holdings Ltd | Financial services | 2021 |
| Broughton Electro-Air Products Limited | Manufacturing | 2000 |
| Broughton Management Limited | Real estate | 2021 |
| BRT (Redditch) Holdings Limited | Administrative & support | 2011 |
| Brtv (Railways) Ltd | Information & communication | 2015 |
| BRU Automotive Ltd | Wholesale & retail | 2023 |
| Brueton Homes Limited | Real estate | 2022 |
| Brunel Logistics (UK) Limited | Transport & logistics | 2003 |
| Brynteg Properties Limited | Real estate | 2016 |
| BS Holdings Midlands Limited | Real estate | 2016 |
| Bsshse Limited | Administrative & support | 2002 |
| BST UK North Limited | Administrative & support | 2008 |
| BSW Electrical Services Limited | Construction | 2023 |
| BTC Fabrications Ltd | Manufacturing | 2020 |
| BTI Computer Systems (UK) Limited | Information & communication | 1978 |
| BTI Holdings Limited | Information & communication | 2008 |
| Bubbly Bathroom Company Limited | Administrative & support | 2003 |
| Buckland Court (Belsize Park) Management Limited | Households | 1965 |
| Budbrooke House Children's Nurseries (Warwick) Limited | Education | 2006 |
| Budget Shipping Containers.Co.Uk Limited | Wholesale & retail | 2022 |
| Buff Daddy Valeting Ltd | Administrative & support | 2020 |
| Building Physics Ltd | Professional & scientific | 2014 |
| Buildland Holdings Limited | Wholesale & retail | 2013 |
| Buildland Limited | Wholesale & retail | 2002 |
| Buildtek Ltd | Construction | 2008 |
| Bull Motif Holdings Limited | Financial services | 2021 |
| Bull Property Developments Ltd | Extraterritorial | 2020 |
| Bulldog Lettings Limited | Real estate | 2026 |
| Bulldog Ltd | Wholesale & retail | 1985 |
| Bulley Court Developments Ltd | Construction | 2018 |
| Bullivant News Corporation Limited | Information & communication | 2020 |
| Burgerr OFF Festivals Ltd | Hospitality | 2024 |
| Burgerr OFF Ltd | Hospitality | 2023 |
| Burlington Estates Development Co Ltd | Construction | 2016 |
| Burlington Estates PJB Limited | Real estate | 2018 |
| Burlington Estates Property Management Limited | Real estate | 2017 |
| Burman & Sons Limited | Extraterritorial | 2009 |
| Burton & Smith Limited | Manufacturing | 2003 |
| Burwax Limited | Real estate | 1942 |
| Bush Family Development & Assets Limited | Real estate | 2026 |
| Bushwackers (Worcester) Limited | Real estate | 2007 |
| Bushwackers Leisure Limited | Professional & scientific | 1997 |
| Business Elevator Ltd | Administrative & support | 2023 |
| Business Leads UK Limited | Administrative & support | 2009 |
| Business Reply Limited | Agriculture & fishing | 2000 |
| Butchers Walk Management Company Limited | Real estate | 2021 |
| Butler Bricks Limited | Real estate | 2021 |
| Butlers Media Ltd | Information & communication | 2025 |
| Butterflies Learning for Life CIC | Education | 2026 |
| Button Motors Ltd | Wholesale & retail | 2017 |
| Buy ME, Sell ME Happy Houses Ltd | Real estate | 2020 |
| BV Exhibition Services Ltd | Administrative & support | 2026 |
| BWP Carpentry Ltd | Construction | 2023 |
| Bydeesign Limited | Professional & scientific | 2012 |
| Byretech Limited | Manufacturing | 2002 |
| C & B Freehold Limited | Households | 2005 |
| C & C Construction Group Ltd | Construction | 2013 |
| C & C Flooring (Midlands) Limited | Construction | 2007 |