| Broadlands Orchard Trust | Education | 2012 |
| Broadley Aquatics Ltd | Administrative & support | 2017 |
| Broadley Finance Ltd | Professional & scientific | 2018 |
| Broccoli Holdings Limited | Professional & scientific | 2014 |
| Brockbank Plaut Consulting Limited | Professional & scientific | 2006 |
| Brockhurst Lodge Management Company (NO. 1) Limited | Households | 2004 |
| Brockhurst Lodge Management Company Limited | Households | 2011 |
| Brockswood Consulting Limited | Professional & scientific | 2024 |
| Brockwell Bexhill Ltd | Real estate | 2021 |
| Brockwell Group (Holdings) Limited | Administrative & support | 2006 |
| Brockwell Group Bexhill LLP | | 2022 |
| Brockwell Group Limited | Real estate | 2017 |
| Brockwell Marlow Ltd | Construction | 2021 |
| Brolly Refurbishment Ltd | Construction | 2003 |
| Brook House (Basingstoke) Management Company Limited | Households | 2015 |
| Brookson (5692D) Limited | Administrative & support | 2007 |
| Brookstone Church Farm Limited | Construction | 2014 |
| Brookstone Construction Limited | Administrative & support | 2016 |
| Brookstone Limited | Administrative & support | 2009 |
| Brookvale School Management Limited | Households | 2000 |
| Broomand Limited | Administrative & support | 2010 |
| Brothers Home Improvement Ltd | Construction | 2014 |
| Brown & Co Heating & Plumbing Limited | Construction | 2026 |
| Bruce Howse Limited | Professional & scientific | 2014 |
| Brunel House Limited | Real estate | 2025 |
| Bsbm Ltd | Real estate | 2019 |
| BSBM2 Ltd | Wholesale & retail | 2019 |
| BTG International Limited | Professional & scientific | 1991 |
| BTG Limited | Professional & scientific | 1991 |
| BTK Pictures Limited | Information & communication | 2005 |
| Buckle (Holdings) Ltd | Administrative & support | 2016 |
| Buckton Business Consulting Ltd | Professional & scientific | 2023 |
| BUD & BUD Creatives Ltd | Professional & scientific | 2019 |
| Buds Landscapes Limited | Administrative & support | 2017 |
| Buffalo ITS Ltd | Information & communication | 2023 |
| Buffalo Pictures Limited | Information & communication | 1996 |
| Buho Productions Limited | Professional & scientific | 2007 |
| BUILD27 Ltd | Construction | 2024 |
| Building Control Matters (South East) Limited | Professional & scientific | 2015 |
| Buildtonic Ltd | Construction | 2021 |
| Built by Jack Limited | Professional & scientific | 2023 |
| Built Nest Ltd | Construction | 2022 |
| BUL Ltd | Hospitality | 2012 |
| Buoyant Production Technologies Limited | Mining & quarrying | 2018 |
| Buracom Limited | Wholesale & retail | 2025 |
| Buraq Payments Limited | Wholesale & retail | 2024 |
| Burgess Close Management Company Limited | Households | 2013 |
| Burlingdale Developments Ltd | Real estate | 2019 |
| Burnham Foods Ltd | Hospitality | 2005 |
| Burnham Marketing Ltd | Hospitality | 2005 |
| Burnt Orange Designs Limited | Information & communication | 2008 |
| Burnzee Holdings Limited | Manufacturing | 2017 |
| Burnzee Limited | Extraterritorial | 2022 |
| Burpham Court Farm Freehold Management Company Limited | Households | 2020 |
| Burree Chauffeur Service Limited | Transport & logistics | 2016 |
| Burrnlee Foods Limited | Hospitality | 2025 |
| Burvills Design & Build Ltd | Construction | 2020 |
| Burvills Limited | Manufacturing | 1997 |
| Bush Baby Travel Limited | Administrative & support | 2004 |
| Business Additions Ltd | Professional & scientific | 1994 |
| Business Media 24 Limited | Wholesale & retail | 2019 |
| Business Radio Limited | Professional & scientific | 1996 |
| Business Reporting Consultants Limited | Professional & scientific | 2006 |
| Business Talk Radio Limited | Professional & scientific | 1999 |
| Buy ME a Pint Ltd | Information & communication | 2024 |
| BW Construction Services Ltd | Construction | 2018 |
| BWP Architects Ltd | Professional & scientific | 2012 |
| BY Snabbit Ltd | Hospitality | 2024 |
| Byardbridge Consultancy Ltd | Professional & scientific | 2019 |
| Byers Doggy Care Ltd | Other services | 2016 |
| Byewater Roofing Limited | Construction | 2012 |
| Byrne Plumbing and Heating Ltd | Construction | 2022 |
| Byron Grove Management Company Limited | Households | 1993 |
| Byron Publishing Ltd | Information & communication | 2025 |
| C & G Search Limited | | 2016 |
| C a MCW Services Limited | Professional & scientific | 2014 |
| C Dadson Ltd | Hospitality | 2018 |
| C T H Hire Centres Limited | Administrative & support | 2009 |
| C&D Painters Limited | Construction | 2014 |
| C&H Foods Limited | Hospitality | 2020 |
| C. S. Todd & Associates Limited | Professional & scientific | 1987 |
| C.A.D.Z Service Limited | Hospitality | 2023 |
| CAB Capital Management Limited | Information & communication | 2018 |
| Cadahu Limited | Households | 1992 |
| Cadence Management Consultants Ltd | Professional & scientific | 2014 |
| Cadenza Technologies Ltd | Wholesale & retail | 2018 |
| Cadfish Limited | Administrative & support | 2007 |
| Cadogan Square Project Limited | Construction | 2014 |
| Cadoq Limited | Real estate | 2018 |
| Cadspeed Racing Limited | Arts & recreation | 2015 |
| Caesars Court Management Company Limited | Households | 1988 |
| Cahc Unlimited | Construction | 2024 |
| Caketoppers Limited | Wholesale & retail | 2007 |
| Caldwell Penn Group Limited | Administrative & support | 2025 |
| Caldwell Penn Limited | Administrative & support | 1999 |
| Caldwell Penn Services LLP | | 2012 |
| Callmaster Mobile Limited | Information & communication | 2008 |
| Calverston Consulting Ltd | Professional & scientific | 2011 |
| Camberfield Taxi Services Limited | Real estate | 1999 |
| Camberley Pubs and Bars Ltd | Hospitality | 2024 |