| Baroco Limited | Professional & scientific | 2006 |
| Bayliss Group Contracting Limited | Construction | 2019 |
| Bayliss Group Electrics Limited | Manufacturing | 2014 |
| Bayliss Group Holdings Limited | Administrative & support | 2020 |
| BE Well Naturally Limited | Other services | 2014 |
| Beason's Aircon & Refrigeration Ltd | Energy | 2018 |
| Beauty by Catherine Ltd | Other services | 2025 |
| Beepeeo Ltd | Information & communication | 2024 |
| Belay Consulting Ltd | Professional & scientific | 2025 |
| Bella Simcox Hair Limited | Other services | 2023 |
| Bellissimo Midlands Limited | Other services | 2019 |
| Benjaminthedev Ltd | Information & communication | 2021 |
| Benkins Limited | Professional & scientific | 1999 |
| Bering Strait Limited | Construction | 2015 |
| Bernies OFF Licence Limited | Wholesale & retail | 2014 |
| Better Future Renewables Ltd | Construction | 2024 |
| Better Normal Limited | Information & communication | 2019 |
| Bevan Davies Ltd | Real estate | 2016 |
| BFA Auctioneers Ltd | Professional & scientific | 2018 |
| Biasnem Ltd | Administrative & support | 2018 |
| Biba Food Limited | Wholesale & retail | 2019 |
| Bickerton Brothers Limited | Manufacturing | 2004 |
| Bidford Bridge House Limited | Hospitality | 2004 |
| Bidford Garage & Garden Services Ltd | Wholesale & retail | 2007 |
| Bidford Garages Limited | Real estate | 1949 |
| Bidford Gliding and Flying Club Limited | Arts & recreation | 2010 |
| Bidford Healthcare Ltd | Health & social care | 2012 |
| Bidford Leisure Building Limited | Construction | 2019 |
| Bidford Mots Ltd | Extraterritorial | 2009 |
| Bidford Property Developments Ltd | Construction | 2025 |
| Bidford Rivermead Court Management Company Limited | Households | 1991 |
| Bidford Storage and Garages Ltd | Transport & logistics | 2013 |
| Bidford Turkish Barbers Ltd | Other services | 2024 |
| Bidford Vehicle Repairs Ltd | Wholesale & retail | 2021 |
| Bidford Waters Edge RTM Company Limited | Households | 2010 |
| Billy Shears Bidford Ltd | Other services | 2016 |
| Biomixer Limited | Manufacturing | 2025 |
| Birch Performance Ltd | Wholesale & retail | 2019 |
| Bitworx UK Ltd | Information & communication | 2023 |
| BK Aesthetics Ltd | Other services | 2018 |
| Blackberry Home Stays Ltd | Hospitality | 2024 |
| Blackney Limited | Extraterritorial | 2013 |
| Blakemore Partners Ltd | Administrative & support | 2025 |
| Blamore Rise Ltd | Real estate | 2019 |
| Blazey Electrical Limited | Construction | 2024 |
| Blenheim Nursery Limited | Wholesale & retail | 2021 |
| BLK-12 Limited | Professional & scientific | 2024 |
| Blossom ETC Limited | Wholesale & retail | 2022 |
| Blue Boar Inn Ltd | Real estate | 2026 |
| Blue Horse I.T. Services Limited | Information & communication | 2014 |
| Blue Raven Creative Limited | Information & communication | 2020 |
| Blue Spill Limited | Information & communication | 2013 |
| Blue-Space Systems Ltd | Professional & scientific | 2018 |
| Blueacre Estates Limited | Real estate | 2004 |
| Bluechasegarg Ltd | Administrative & support | 2018 |
| Board Brothers Limited | Real estate | 2023 |
| Bodytech Solihull Limited | Wholesale & retail | 2014 |
| Bombaysplits Ltd | Wholesale & retail | 2019 |
| Bonten Consulting Limited | Administrative & support | 1990 |
| Bonwell Ltd | Professional & scientific | 2023 |
| Boomer Properties Ltd | Real estate | 2022 |
| Borg Investments Ltd | Financial services | 2022 |
| Borislav Syarov Ltd | Manufacturing | 2017 |
| Boxedene Estates Limited | Professional & scientific | 2014 |
| BPP Screen Graphics Limited | Professional & scientific | 1993 |
| Bpss UK Ltd | Professional & scientific | 2017 |
| Bracewell Financial Solutions Ltd | Financial services | 2013 |
| Brandvestor Limited | Extraterritorial | 2016 |
| Brentsouth Trading Limited | | 2009 |
| Bricks & Roses Limited | Professional & scientific | 2024 |
| Bridge END Limited | Wholesale & retail | 1965 |
| Bridge House (Alcester Road) Management Company Limited | Households | 2021 |
| Brighter Pathways Ltd | Health & social care | 2025 |
| Bristow Properties Limited | Households | 2018 |
| Britannia Washing & Cleaning Systems Limited | Professional & scientific | 1959 |
| Britannic Pharma Ltd | Manufacturing | 2018 |
| Britco Engineering Limited | Professional & scientific | 2020 |
| Broadcast Recycle Limited | Wholesale & retail | 2018 |
| Broom Joinery Limited | Administrative & support | 1998 |
| Broom Junction Limited | Real estate | 2023 |
| Brushstrokes Property Services Limited | Construction | 2003 |
| BS Buildings Construction Limited | Construction | 2018 |
| BSL Assist Ltd | Professional & scientific | 2016 |
| BTH Garden Services Ltd | Professional & scientific | 2025 |
| Buckinghams Cleaning Solutions Limited | Administrative & support | 2016 |
| Buffalo JFP Group Ltd | Wholesale & retail | 2023 |
| Bulmers Carpentry & Joinery Ltd | Manufacturing | 2024 |
| Bulmers Construction Group Ltd | Construction | 2026 |
| Bulmers Machinery Company Limited | Manufacturing | 2012 |
| Butchers Printed Products Limited | Manufacturing | 1990 |
| Buzzard Cameras Limited | Manufacturing | 2016 |
| Buzztech Digital Limited | Wholesale & retail | 2011 |
| BWG Management Ltd | Professional & scientific | 2024 |
| BXR Services Ltd | Wholesale & retail | 2024 |
| C & T Electrical Limited | Construction | 2020 |
| CAB Hospitality Marketing Limited | Professional & scientific | 2015 |
| CAB Social Marketing Limited | Information & communication | 2016 |
| Cadoc 2 Limited | Professional & scientific | 2014 |
| Cadoc Limited | Professional & scientific | 2008 |
| Cadon Building Services Ltd | Construction | 2023 |