| Back to Front Exterior Design Limited | Professional & scientific | 2018 |
| Back to Front Inside OUT Limited | Extraterritorial | 2022 |
| BAD Shot Film Lighting Limited | Other services | 2014 |
| Baden Bathrooms Limited | Wholesale & retail | 2015 |
| Badnor Financial Services Limited | Financial services | 1992 |
| Badshot Farm Limited | Real estate | 2015 |
| Badshot LEA Car Care Ltd | Other services | 2023 |
| Baer Limited | Real estate | 2024 |
| Bahar Ergul Ltd | Professional & scientific | 2020 |
| Bahn International Limited | Water & waste | 2016 |
| Bailey and Company Tax Consultants Ltd | Professional & scientific | 2011 |
| Bailiwick Broadcasting Limited | Information & communication | 2005 |
| Baird Road Ltd | Construction | 2019 |
| Baker Environmental Controls Limited | Construction | 2011 |
| Baker Technician Limited | Wholesale & retail | 2025 |
| Bakerlaw LLP | | 2012 |
| Bakerlaw Solicitors Limited | Professional & scientific | 2016 |
| Baldwin Lewis Ltd | Professional & scientific | 2022 |
| Ballard Industries Limited | Financial services | 2015 |
| Ballerz Clubhouse Ltd | Hospitality | 2023 |
| Ballone-Burini Ltd | Wholesale & retail | 2023 |
| Balmeet S Estates Ltd | Real estate | 2024 |
| Bambo Ltd | Wholesale & retail | 2007 |
| Bamps Marketing Ltd | Professional & scientific | 2026 |
| Band of Brothers Scaffolding Limited | Construction | 2022 |
| Bank Solutions Limited | Information & communication | 2006 |
| Baransu Limited | Professional & scientific | 2021 |
| Bare Bone Burgers Ltd | Hospitality | 2023 |
| Barker Specialised Engineering Ltd | Professional & scientific | 2015 |
| Barks and Bikes Ltd | Manufacturing | 2024 |
| Barley MOW Sands Holding Company Limited | Hospitality | 2024 |
| Barn Leisure Limited | Real estate | 2014 |
| Barnsfold Nurseries Limited | Wholesale & retail | 2014 |
| Barnsmuir Farm Limited | Agriculture & fishing | 2011 |
| Barny Jones Limited | Wholesale & retail | 2014 |
| Barrocon Limited | Health & social care | 2008 |
| Bartlett Miller Limited | Financial services | 2006 |
| Barton Court (Farnborough) RTM Company Limited | Households | 2006 |
| Based Shirts UK Ltd | Wholesale & retail | 2023 |
| Batch Bakehouse Gelato Ltd | Wholesale & retail | 2024 |
| Bathory Ltd | Real estate | 2013 |
| Bayeaux House (Commonside East) Residents Management Company Ltd | Households | 2019 |
| Bayfield Limited | Professional & scientific | 2021 |
| BBC Secretaries Limited | Professional & scientific | 2003 |
| Bbmpg 4 Ltd | Construction | 2022 |
| Bbzguitars Limited | Manufacturing | 2007 |
| Bd-C Feeling Bidco Limited | Financial services | 2020 |
| Bd-C Feeling Midco Limited | Financial services | 2020 |
| BDI Design Limited | Manufacturing | 2011 |
| Bdyer Limited | Professional & scientific | 2021 |
| BEA Property Management Limited | Real estate | 2026 |
| Beacon Hill Garage Limited | Real estate | 1957 |
| Beacon of Peace Limited | Other services | 2015 |
| Beacon Parts Limited | Wholesale & retail | 2024 |
| Beagleys Bakery Ltd | Wholesale & retail | 2023 |
| Bealaw 63 Limited | Information & communication | 2017 |
| Beam Consultants (UK) Limited | Professional & scientific | 1989 |
| Beamscape Ltd | Arts & recreation | 2013 |
| Beardog Limited | Real estate | 2006 |
| Bears Restaurant Ltd | Hospitality | 2019 |
| Beaufort Park (Wrecclesham) Residents Association Limited | Households | 2006 |
| Beaulynch Holdings Limited | Professional & scientific | 2016 |
| Beautique K&K Limited | Other services | 2010 |
| Beauty Buddy Limited | Wholesale & retail | 2005 |
| Beauty Mastery Ltd. | Wholesale & retail | 2017 |
| Beavers Road (NO. 1) Management Limited | Households | 2007 |
| Becketts Wharf Developments Limited | Construction | 2025 |
| Becm Limited | Information & communication | 2023 |
| Bedrock Healthcare Communications Limited | Administrative & support | 2010 |
| Beechgate Consulting Limited | Professional & scientific | 2008 |
| Beechwood & Co Services Limited | Construction | 2000 |
| Beer Exhibitions Limited | Other services | 1984 |
| Beetle Juice Events Limited | Hospitality | 2012 |
| Beetlelink Limited | Wholesale & retail | 2019 |
| Beeutiful Limited | Extraterritorial | 2012 |
| Before Nine Ltd | Professional & scientific | 2017 |
| Bell Lord Limited | Information & communication | 2006 |
| Belle Lily Ltd | Real estate | 2016 |
| Belles and Bubbles Hire and Events Management Ltd | Administrative & support | 2021 |
| Bellew Road Developments Limited | Construction | 2025 |
| Belmead Tech Solutions Ltd | Extraterritorial | 2012 |
| Belvedere Mead Limited | Professional & scientific | 2010 |
| BEN Hughes Chimneys Limited | Administrative & support | 2007 |
| BEN Ledi Limited | Financial services | 2019 |
| Benignius Limited | Professional & scientific | 2016 |
| Bennett & Co Contracts Limited | Construction | 2018 |
| Bentley Mobility Services Limited | Wholesale & retail | 2010 |
| Bentley Park Management Company Ltd. | Real estate | 1989 |
| Bentley Toft Ventures Limited | Hospitality | 2025 |
| Bequest Developments Ltd | Construction | 2018 |
| Bequest Holdings Ltd | Financial services | 2021 |
| Bequest Projects Limited | Construction | 2019 |
| Beresford Properties Limited | Real estate | 1993 |
| Beresford Technologies Limited | Other services | 2006 |
| Berg Developments Ltd | Construction | 2023 |
| Bergman & MAR Ltd | Professional & scientific | 2016 |
| Berkeley Square Vehicle Services Limited | Administrative & support | 2014 |
| Berkshire Slate and Clay Limited | Wholesale & retail | 2025 |
| Berma Limited | Real estate | 1998 |
| Berry Properties Limited | Construction | 2013 |