| Atlas 01 Ltd | Construction | 2024 |
| Atmos Homes Ltd | Construction | 2025 |
| Aureum Motors Ltd | Wholesale & retail | 2026 |
| Aurora Maintenance Ltd | Manufacturing | 2013 |
| Australis Reflexology Ltd | Other services | 2024 |
| Auto City Ltd | Wholesale & retail | 2025 |
| Auto Renovation Ltd | Manufacturing | 2019 |
| Autohelp Ltd | Wholesale & retail | 2024 |
| Autumn Leaves Psychotherapy Ltd | Health & social care | 2023 |
| Avocado AI Ltd | Information & communication | 2026 |
| Avonbloom Ltd | Wholesale & retail | 2022 |
| Avron Property Solutions Ltd | Real estate | 2022 |
| AWC Interiors Ltd | Construction | 2016 |
| AWL Consultants Limited | Administrative & support | 1965 |
| Ayan Homes Limited | Real estate | 2022 |
| AYS83 Ltd | Other services | 2012 |
| B C Briggs Construction Ltd. | Construction | 2025 |
| B Clark Property Services Ltd | Construction | 2021 |
| B-Ms-I Ltd | Professional & scientific | 2024 |
| B.R.M. Wetherby Limited | Construction | 1998 |
| Badminton Bible Limited | Arts & recreation | 2004 |
| Baillie Property Developments Limited | Real estate | 2022 |
| Balham Driving School Ltd | Education | 2025 |
| Ballymore Thoroughbred Racing Limited | Professional & scientific | 2018 |
| Balvin Electronics Ltd | Manufacturing | 2016 |
| Bandwagon Productions Ltd | Arts & recreation | 2011 |
| Banstead Athletic Community Sports CIC | Arts & recreation | 2026 |
| Banstead Health Hub Ltd | Health & social care | 2026 |
| Bare Nominees Limited | Administrative & support | 1986 |
| Barnyard (Walton) Limited | Households | 1962 |
| Bartlett Cooke Limited | Real estate | 2009 |
| Basilio Blacks Ltd | Manufacturing | 2021 |
| Bayeux Residents Limited | Households | 2015 |
| Beauty Village Ltd | Other services | 2019 |
| BEC Holdings Limited | Professional & scientific | 2015 |
| Becketts Number 18 Limited | Financial services | 2020 |
| Beech Drive Holdings Ltd | Financial services | 2020 |
| Beeches Window Cleaning Ltd | Administrative & support | 2016 |
| Belendale | Real estate | 2000 |
| Belgrad Developments Limited | Real estate | 2018 |
| Belltek Ltd | Information & communication | 2015 |
| Benim Ltd | Professional & scientific | 2023 |
| Bento Express Delivery Limited | Hospitality | 2020 |
| Berkley House LLP | | 2025 |
| Bespoke Developments Limited | Construction | 2009 |
| Bespoque Construction Ltd | Construction | 2012 |
| Betbuddy Limited | Information & communication | 2025 |
| Betchworth Limited | Construction | 1996 |
| BG Auto-Fix Service Ltd | Wholesale & retail | 2019 |
| Biotk Ltd | Professional & scientific | 2025 |
| Bisley Construction Limited | Construction | 2013 |
| Black Square Technology Ltd | Information & communication | 2023 |
| Blacks Burgers Ltd | Hospitality | 2012 |
| Blades Group Limited | Administrative & support | 2024 |
| Blades Service Group Limited | Administrative & support | 2024 |
| Blakebrooke Ltd. | Construction | 2015 |
| Blaze Estates Limited | Real estate | 2005 |
| BLE Construction Ltd | Construction | 2020 |
| Blesscharm Limited | Manufacturing | 1993 |
| Blitz N Bubbles Limited | Administrative & support | 2025 |
| Blood of the Beast Fitness & Nutrition Limited | Wholesale & retail | 2026 |
| Blue Arrow Cleaners Limited | Administrative & support | 2016 |
| Blue Bottle Audio Ltd | Arts & recreation | 2018 |
| Blue Flame GAS Engineers Ltd | Construction | 2022 |
| Blue Runway Ltd | Financial services | 2025 |
| Bluevinnie Limited | Real estate | 2012 |
| BMU Medical Communications Limited | Manufacturing | 2024 |
| Bobcameng Ltd | Professional & scientific | 2020 |
| Bonnie Developments Limited | Construction | 2025 |
| Boot Blitz Limited | Wholesale & retail | 2026 |
| Bourne Financial Consulting LLP | | 2009 |
| BOW Developments Limited | Professional & scientific | 2017 |
| Bowens Electrical Services Ltd | Construction | 2025 |
| Boxhill Gardening and Tree Services Limited | Administrative & support | 2025 |
| Brainstein Limited | Health & social care | 2013 |
| Bravo Infraculture CIC | Health & social care | 2010 |
| Braxfield Consulting Limited | Professional & scientific | 2015 |
| Brennick Ltd | Real estate | 2026 |
| Bridleways Management Company Limited | Households | 1997 |
| Bright Future Assessments UK Ltd | Health & social care | 2025 |
| Bright Light Translation Ltd | Professional & scientific | 2015 |
| Brightsky Design Limited | Information & communication | 2003 |
| Britannia Builders (Banstead) Limited | Construction | 1994 |
| BRM Management Limited | Professional & scientific | 1986 |
| Brockwell Burgess & Associates LLP | | 2008 |
| Brookpass Developments Limited | Real estate | 2023 |
| Brookpass Limited | Construction | 1978 |
| Brookpass Residential Limited | Real estate | 2022 |
| Browns Residential Limited | Real estate | 2015 |
| Buckland Building Contractors (S.E.) Limited | Construction | 2015 |
| Buckland Smart Homes Ltd | Construction | 2026 |
| Buckley Building Maintenance Ltd | Construction | 2012 |
| Buckleys of Cobham Ltd | Wholesale & retail | 2009 |
| Buddy Exercise Ltd | Arts & recreation | 2021 |
| Build Grow Developments Limited | Construction | 2016 |
| Buildstar Limited | Construction | 2024 |
| Businessair Ltd | Transport & logistics | 2003 |
| Busy Bees Scaffolding Ltd | Construction | 2025 |
| BY Design Tadworth Ltd | Wholesale & retail | 2016 |
| Byron Smith Consultancy Ltd | Extraterritorial | 2022 |