| BB Bookkeeping and Business Services Ltd | Professional & scientific | 2020 |
| BCA Design Holdings Limited | Professional & scientific | 2016 |
| Beans and Beyond Ltd | Professional & scientific | 2018 |
| Bear and BEE Limited | Information & communication | 2024 |
| Beaumont Collectables Ltd | Wholesale & retail | 2025 |
| Begin 2 Network Services CIC | Other services | 2026 |
| Bella U Aesthetics Ltd | Health & social care | 2025 |
| Below the Line Limited | Administrative & support | 2006 |
| BEN Kinman GAS & Plumbing Ltd | Construction | 2025 |
| Benton & Saunders Limited | Construction | 2017 |
| Better Than Before Education Ltd | Education | 2022 |
| Better Than Before Fitness Limited | Arts & recreation | 2017 |
| Betterwithoutbooze Ltd | Information & communication | 2026 |
| Bev's Kitchen Ltd | Hospitality | 2024 |
| Beyond Salt Limited | Wholesale & retail | 2023 |
| Bidmead Building & Plumbing Limited | Construction | 2017 |
| Big Pebble Limited | Real estate | 2018 |
| Binky Medical Devices Limited | Extraterritorial | 2017 |
| Birria EL PAP Ltd | Professional & scientific | 2012 |
| Bishop's Breakie Limited | Hospitality | 2025 |
| Bishops Bowl Limited | Wholesale & retail | 2019 |
| Bishops Itchington Community Project | Public administration | 2010 |
| Bishops Itchington Sports Association Ltd | Arts & recreation | 2003 |
| Bishops Kebab and Pizzeria Ltd | Hospitality | 2023 |
| Bitham Hall Limited | Real estate | 2004 |
| Black Cat Motor Company Limited | Wholesale & retail | 2007 |
| Blexley Enterprises Ltd | Administrative & support | 2007 |
| Bloxham Homes Ltd | Real estate | 2018 |
| Blue Eden Ltd | Professional & scientific | 2025 |
| Blue Lias Marina Limited | Manufacturing | 1988 |
| Bluebells Cleaning Services Limited | Administrative & support | 2024 |
| Blueprint BI Ltd | Information & communication | 2026 |
| Blush Smiles Ltd | Health & social care | 2025 |
| Bnbeyond Stays Ltd | Hospitality | 2025 |
| Bond Contracts Limited | Extraterritorial | 2017 |
| Bond Management Consultants LLP | | 2019 |
| Bondir Ltd | Professional & scientific | 2025 |
| Boon Automotive Transport Limited | Transport & logistics | 2022 |
| Booyakas Limited | Professional & scientific | 2015 |
| Bossmittens Ltd | Manufacturing | 2023 |
| Braemore Developments Limited | Construction | 2002 |
| Brainy Business Solutions Ltd | Professional & scientific | 2024 |
| Brankbrook Limited | Professional & scientific | 2005 |
| Brett’S Plumbing & Heating Limited | Construction | 2026 |
| Brian Irvine Original Picture (Biopic) Photography Ltd | Professional & scientific | 2021 |
| Bridge Business Solutions Limited | Professional & scientific | 2004 |
| Brit Innovations Group Limited | Manufacturing | 2025 |
| Bugg Enterprise Ltd | Wholesale & retail | 2020 |
| Built Environment Efficiency Systems Limited | Manufacturing | 2014 |
| Bull Street Mews Limited | Administrative & support | 2003 |
| Bunting Capital Limited | Financial services | 2025 |
| Busby Construction Ltd | Construction | 2011 |
| Butkam Limited | Professional & scientific | 2021 |
| Butlin Fork Trucks Limited | Administrative & support | 2001 |
| C & R Mobile Catering Limited | Wholesale & retail | 2020 |
| C & W Knight Limited | Water & waste | 2002 |
| C P Joinery Limited | Manufacturing | 2020 |
| C.& W.Knight(Sales) | Mining & quarrying | 1960 |
| C.V.Brickwork Ltd | Manufacturing | 2025 |
| C92 Holdings Limited | Administrative & support | 2023 |
| Cadence Trading Ltd | Information & communication | 2017 |
| Calias Property Limited | Real estate | 2016 |
| Campbells Academy Ltd | Administrative & support | 2012 |
| Captura Accounting Limited | Professional & scientific | 2013 |
| Card Sound Ltd | Real estate | 2020 |
| Cardinal (UK) Limited | Information & communication | 2003 |
| Catkins and Clematis Ltd | Agriculture & fishing | 2022 |
| CATS3 Limited | Information & communication | 2004 |
| Central Cleaning Supplies Limited | Wholesale & retail | 1994 |
| Challenge IP Limited | Professional & scientific | 2014 |
| Challenger (Midlands) Limited | Administrative & support | 2021 |
| CHAMBER5GAMES Ltd | Information & communication | 2025 |
| Charlie-Alpha (Ecms) Ltd | Information & communication | 2025 |
| Charnock Slade Limited | Wholesale & retail | 2013 |
| Charysta Limited | Construction | 2007 |
| Chas Insurance Limited | Financial services | 2012 |
| Checked Shirt TV Limited | Information & communication | 2012 |
| Chefvinidub Limited | Hospitality | 2015 |
| Cherwell Packaging Limited | Wholesale & retail | 1977 |
| Chestnut Place Residents Limited | Households | 1989 |
| Chloe Cleans Limited | Administrative & support | 2025 |
| Chooboo Consulting Limited | Professional & scientific | 2026 |
| Choongh Property Investments Ltd | Real estate | 2022 |
| Cinn Learning & Development Ltd. | Education | 2015 |
| Cirrus Collective Ltd | Professional & scientific | 2021 |
| CJ Creative Ltd | Arts & recreation | 2017 |
| Clarionat Limited | Information & communication | 2016 |
| Clarity EAR Health Ltd | Public administration | 2025 |
| Clarkson Consulting Services Limited | Professional & scientific | 2026 |
| Claydon Horse Exercisers Holdings Limited | Financial services | 2016 |
| Cleary's Boxing Management Ltd | Arts & recreation | 2024 |
| Cleverzest Ltd | Information & communication | 2026 |
| Cli-Per Limited | Professional & scientific | 2006 |
| Client Business Support Ltd | Professional & scientific | 2021 |
| Cloud Pulse Communications Ltd | Information & communication | 2026 |
| CM Consulting Midlands Ltd | Information & communication | 2008 |
| CMD Associates Limited | Professional & scientific | 2009 |
| CNG Management Ltd | Real estate | 2024 |
| Coach on a Motorcycle Limited | Professional & scientific | 2011 |
| Coaching 4 Careers Ltd | Administrative & support | 2013 |