| BMW Car Club Limited | Professional & scientific | 1981 |
| BMW Central Medical Trustees Limited | Professional & scientific | 1982 |
| BMW Drivers Club Limited | Professional & scientific | 1981 |
| BMW Financial Services (GB) Limited | Financial services | 1976 |
| BMW Motorsport Limited | Manufacturing | 1995 |
| BMW Pension Trustees Limited | Professional & scientific | 1985 |
| Board Brothers Collective Ltd | Manufacturing | 2025 |
| Bolaji Ventures Limited | Other services | 2024 |
| Bolt Advisory Limited | Professional & scientific | 2006 |
| Boltzmann Holdings Ltd | Real estate | 2024 |
| Bombouche Limited | Wholesale & retail | 2014 |
| Bond Helicopters Limited | Transport & logistics | 2022 |
| Bonds Heating Ltd | Construction | 2024 |
| Boolerize Ltd | Information & communication | 2025 |
| Boom SMS Limited | Information & communication | 1999 |
| Boost Ecommerce Ltd | Information & communication | 2026 |
| Bootcamp UK Reading Limited | Arts & recreation | 2019 |
| Boro FC Comm Ltd | Arts & recreation | 2022 |
| Boro FC Social Limited | Arts & recreation | 2016 |
| Boro FC. Ltd | Arts & recreation | 2013 |
| Borrow House Farm Management Limited | Households | 2020 |
| Botsjuana Ltd | Extraterritorial | 2019 |
| Boundstone UK Limited | Professional & scientific | 2019 |
| Bowman Goalkeeping Ltd | Education | 2024 |
| Boyars Services Limited | Construction | 2022 |
| BPB Projects Limited | Manufacturing | 2026 |
| Bpfarnborough Ltd | Hospitality | 2024 |
| BPI Quick Ltd | Real estate | 2016 |
| Braain CIC | Health & social care | 2022 |
| Bracken Estates Limited | Real estate | 1998 |
| Braganza Court Management Co. Limited | Households | 1989 |
| Brans Retail Limited | Wholesale & retail | 2025 |
| Branson Labs Ltd | Information & communication | 2025 |
| Brave Everyday CIC | Education | 2025 |
| Brearley Consulting Limited | Professional & scientific | 2010 |
| Briarleas Court Residents Association Limited | Professional & scientific | 1970 |
| Brick Management and Lettings Ltd | Real estate | 2021 |
| Brickman Solution Limited | Construction | 2023 |
| Bridges Trading Company Limited | Wholesale & retail | 1995 |
| Briggs Rainburn Ltd | Manufacturing | 2013 |
| Bright Futures Investment Limited | Health & social care | 2013 |
| Brightly Software Limited | Information & communication | 2020 |
| Britnep Property Limited | Real estate | 2022 |
| Broadland Environmental Services Limited | Administrative & support | 1998 |
| Broadtalk Sales Ltd | Wholesale & retail | 2014 |
| Broadway Pampered Pets Limited | Wholesale & retail | 2012 |
| Brockbank Consultancy Ltd | Transport & logistics | 2016 |
| Brockenhurst House Freeholders Limited | Households | 2015 |
| Brook Road Management Company (Redhill) Ltd | Households | 2021 |
| Brooke Priory School Limited | Education | 1992 |
| Brooklands Racing Ltd | Other services | 2013 |
| Brookson (5618I) Limited | Construction | 2007 |
| Brookson (5745G) Limited | Professional & scientific | 2007 |
| Brownow Academy Ltd | Other services | 2025 |
| Brrand Popp Media (BPM) Ltd | Information & communication | 2024 |
| Bryair Mechanical Limited | Construction | 2013 |
| BTR Consultancy Ltd | Professional & scientific | 2015 |
| Bubblegum Balloons Limited | Wholesale & retail | 2013 |
| Buckinghamoflondon Ltd | Administrative & support | 2016 |
| Bucks ROW Limited | Real estate | 2013 |
| Build Better Properties Ltd | Construction | 2025 |
| Buildec Property Services Limited | Construction | 2018 |
| Building Total Services Ltd | Construction | 2022 |
| Bulgaru Recovery Ltd | Transport & logistics | 2025 |
| Bulut 91 Ltd | Hospitality | 2019 |
| Burf Robotics Limited | Professional & scientific | 2025 |
| Bush Telecom Limited | Information & communication | 2005 |
| Business First Solutions Limited | Information & communication | 2003 |
| Busy BEE Garden Services Limited | Administrative & support | 2010 |
| Butchart Roofing Limited | Construction | 2012 |
| Butlers Holdings Ltd | Financial services | 2024 |
| BY25GB Ltd | Wholesale & retail | 2026 |
| Byte Again IT Ltd | Wholesale & retail | 2024 |
| C a Garden Landscaping Limited | Administrative & support | 2018 |
| C B D Kitchens Limited | Administrative & support | 2018 |
| C E M International Ltd | Professional & scientific | 2002 |
| C Mchugh Electrical Contracting Ltd | Construction | 2010 |
| C&L Budhha Ltd | Real estate | 2021 |
| C. & D. Business Equipment Limited | Transport & logistics | 1973 |
| C.C.L. Equestrian Ltd | Agriculture & fishing | 2022 |
| C.P.B. Property Management Limited | Real estate | 1994 |
| Cabin Balance Ltd | Manufacturing | 2026 |
| CAD Air Conditioning Limited | Energy | 2004 |
| Caddy Snack Ltd | Hospitality | 2024 |
| CADENCE100 Limited | Professional & scientific | 2009 |
| CADENCE100 Partners LLP | | 2020 |
| CADENCE100 Property Ltd | Real estate | 2021 |
| Cadmec Design Limited | Professional & scientific | 1990 |
| Cadspace Solutions Ltd | Professional & scientific | 2013 |
| Cake Design Limited | Other services | 2008 |
| Calabria Restaurant Limited | Hospitality | 2017 |
| Camber & Company (Southern) Limited | Construction | 2012 |
| Camberley & Farnborough Hockey Club Ltd | Arts & recreation | 2020 |
| Camberley Cooling and Electric Ltd | Manufacturing | 2025 |
| Camberley Driveways and Patios Ltd | Construction | 2026 |
| Camberley Estates Limited | Administrative & support | 1998 |
| Camberley Laundry Services Limited | Information & communication | 2015 |
| Camp Irock Limited | Education | 2018 |
| Camvention Limited | Manufacturing | 2022 |
| Canela Collective Ltd | Wholesale & retail | 2024 |