| Bargate Advisory Limited | Professional & scientific | 2012 |
| Barkman Computers Limited | Wholesale & retail | 1984 |
| Barkman Limited | Wholesale & retail | 1992 |
| Barlejo Contract Interiors Limited | | 1991 |
| Barlindene Limited | Wholesale & retail | 1974 |
| Barly Properties Limited | Administrative & support | 2000 |
| Barn Dance & Line Dance Agency Limited | Arts & recreation | 1983 |
| Barn Dance Publications Limited | Information & communication | 1992 |
| Barncroft (Farnham) Management Limited | Administrative & support | 1995 |
| Barrenjoey Limited | Information & communication | 1996 |
| Barrie Bass and Sons Limited | Professional & scientific | 2008 |
| Barrington Ventures Limited | Wholesale & retail | 2004 |
| Barrow Hill Close Residents Association Limited | Real estate | 1969 |
| Basic Commercial Limited | Real estate | 1985 |
| Bates Wharf Marine Sales Limited | Wholesale & retail | 1992 |
| Batonpoint Limited | Construction | 1984 |
| Battenoak Limited | | 1976 |
| Battle Borne Tactical Ltd | Manufacturing | 2026 |
| Bawn Electrical Limited | Construction | 2010 |
| Baygrove Mews Hampton Wick Management Limited | Households | 1997 |
| Bayroe Engineering Limited | Professional & scientific | 1970 |
| Bayside Investment Company Limited | Real estate | 1993 |
| BAZ Co Holdings Limited | Financial services | 2026 |
| Bazmac Holdings Limited | Financial services | 2026 |
| Bazmac Property Holdings Limited | Financial services | 2026 |
| Bazmac Property North Limited | Financial services | 2026 |
| Bazmac Property South Limited | Financial services | 2026 |
| Bazmac UK Limited | Financial services | 2026 |
| Bbmy Limited | Information & communication | 2007 |
| BCA Corporate Holdings Ltd | Professional & scientific | 2005 |
| BCA Enterprises Ltd | Real estate | 2020 |
| Bcms (Northern) Limited | | 1986 |
| Bcrs Limited | Professional & scientific | 2004 |
| BE Bird Limited | Wholesale & retail | 2021 |
| Beachcomber Tours Limited | Administrative & support | 1988 |
| Beacon Grove Management Company Limited | Households | 1981 |
| Beaconsfield Invest Ltd | Real estate | 2023 |
| Beaden International Ltd | Manufacturing | 2025 |
| Beambridge Medical Limited | Manufacturing | 2007 |
| Beamray Limited | Real estate | 1994 |
| Bean Prop Ltd | Real estate | 2023 |
| Beatrice Lodge Limited | Hospitality | 1993 |
| Beaumont Lodge Limited | Health & social care | 2003 |
| Beautiful Beginings Montessori Day Nursery Ltd | Education | 2016 |
| Beauty Box (Surrey) Limited | Other services | 2002 |
| Beauty Image Limited | Administrative & support | 2002 |
| Beaver Access Limited | Construction | 2023 |
| BEC Engineering Limited | Manufacturing | 2006 |
| Beech Park Bloodstock Limited | Agriculture & fishing | 1984 |
| Beechmode Properties Limited | Real estate | 1996 |
| Beecholme Residents Management Company Limited | Households | 1993 |
| Beechwood Park Management Company Limited | Households | 1985 |
| Beechwood Place (Surbiton) Management Limited | Households | 1999 |
| Beer and Sunshine Boys Limited | Arts & recreation | 2002 |
| Beezdale LLP | | 2024 |
| Bejawn Limited | Information & communication | 2003 |
| BEL4 Office Complex Limited | Real estate | 2025 |
| Belgrave Square Holdings UK Limited | Financial services | 2018 |
| Belgravia Developments Limited | Professional & scientific | 1989 |
| Belgravia Work Limited | Real estate | 2025 |
| Bella MIA Property Limited | Real estate | 2022 |
| Bellevue Construction Limited | Construction | 1974 |
| Bellevue Property Investments Limited | Real estate | 1992 |
| Bellfleet Limited | | 1983 |
| Bellont Limited | | 1986 |
| Bellwoods International Limited | Information & communication | 2002 |
| Belmont DRY Cleaners Oxted Ltd | Other services | 2020 |
| Belmont Tool Hire Limited | Extraterritorial | 1988 |
| Belsales Limited | Manufacturing | 1996 |
| BEN Nicholson Tree Services Limited | Agriculture & fishing | 2005 |
| Bendalto Limited | | 1982 |
| Bengrove Investments Ltd | Real estate | 2023 |
| Bennett Consultancy Limited | Wholesale & retail | 2001 |
| Bennett-Frost (Thames) Limited | Professional & scientific | 1978 |
| Bensham Mini Market Ltd | Wholesale & retail | 2023 |
| Benson Investments Limited | Real estate | 1964 |
| Bentley Brown Catering Hire Limited | Hospitality | 1985 |
| Beritaz Care Ltd | Health & social care | 2008 |
| Beritrading.Com Limited | Hospitality | 2004 |
| Berkeley Eighteen Limited | Extraterritorial | 2000 |
| Berkeley Festival Hotels Limited | Professional & scientific | 2002 |
| Berkeley Fifty Limited | Extraterritorial | 2003 |
| Berkeley Fifty-Five Limited | Construction | 2003 |
| Berkeley Fifty-Four Limited | Extraterritorial | 2003 |
| Berkeley Fifty-One Limited | Extraterritorial | 2003 |
| Berkeley Fifty-Two Limited | Extraterritorial | 2003 |
| Berkeley Forty-Nine Limited | Extraterritorial | 2003 |
| Berkeley Forty-Seven Limited | Extraterritorial | 2003 |
| Berkeley Forty-Six Limited | Extraterritorial | 2003 |
| Berkeley Group Pension Trustees Limited | Financial services | 1997 |
| Berkeley Homes (South Western House NO. 1) Limited | Extraterritorial | 1999 |
| Berkeley Homes Public Limited Company | Construction | 2000 |
| Berkeley Projects UK Limited | Construction | 1996 |
| Berkeley Retirement Villages Limited | Construction | 2005 |
| Berkeley Sixty-Nine Limited | Extraterritorial | 1998 |
| Berkeley Twenty Limited | Financial services | 2000 |
| Berkeley Twenty-Eight Limited | Extraterritorial | 2001 |
| Berkeley Twenty-Nine Limited | Extraterritorial | 2001 |
| Berkshire Crosby Associates LLP | | 2013 |
| Bernard Brace Accountants Limited | Professional & scientific | 2005 |