| Anglia Court Management Company Limited | Households | 1999 |
| Ansell's Butchers Ltd | Wholesale & retail | 2026 |
| ANT Telecommunications Limited | Information & communication | 2000 |
| Antelope Learning Ltd | Administrative & support | 2022 |
| Appledown Clinical Research Limited | Professional & scientific | 1999 |
| Applegarth Vale (Grayshott) Management Company Limited | Households | 2018 |
| Applycertain Property Management Limited | Households | 1994 |
| Approach 2000 Management Company Limited | Households | 2000 |
| Apricity Productions Ltd | Information & communication | 2014 |
| Apsley Grange Residents' Company Limited | Households | 1995 |
| Aqurate Rail Limited | Construction | 2025 |
| Araucaria Partners Ltd | Professional & scientific | 2024 |
| ARC Landscape Design and Planning Ltd | Professional & scientific | 2014 |
| Arcady Limited | Construction | 2020 |
| ARD Design Limited | Arts & recreation | 2007 |
| Ardente Consulting Limited | Professional & scientific | 2018 |
| Ardmore Lodge Management Company Limited | Households | 1986 |
| ARK C Investments Limited | Wholesale & retail | 2022 |
| Arle Road Cheltenham Estate Management Company Limited | Households | 2005 |
| Arle Road Cheltenham Leasehold Management Company Limited | Households | 2005 |
| Arotec Limited | Wholesale & retail | 2013 |
| Arrol Kitchen Co Ltd | Wholesale & retail | 2011 |
| Article 13 Limited | Professional & scientific | 1998 |
| Ashbury Crescent (Merrow) Management Company Limited | Households | 1983 |
| Aspen Gardens Management Company NO. 1 Limited | Households | 1980 |
| Aspire Court 2006 Limited | Households | 2006 |
| Asset Drive AI Ltd | Information & communication | 2026 |
| Astor House Management Company Ltd | Households | 2015 |
| Atapos Heating Ltd | Construction | 2019 |
| Atarlo Limited | Health & social care | 2022 |
| Athanor Corporation Ltd | Financial services | 2025 |
| Atherton Hill (Farnham) Management Company Limited | Households | 2018 |
| Atlantic Motors Limited | Wholesale & retail | 2021 |
| Atomixair Technologies Ltd | Information & communication | 2019 |
| Attield Jing Limited | Wholesale & retail | 2025 |
| Auburn Residential Ltd | Real estate | 2026 |
| Authentic Clinical Development Ltd | Professional & scientific | 2015 |
| Axar Tiles Limited | Wholesale & retail | 2023 |
| AXI Media Limited | Information & communication | 2006 |
| Azure Apartments Management Company Limited | Households | 2007 |
| Azzurro Training Ltd. | Other services | 2016 |
| B and G Day Ltd | Other services | 2008 |
| Baden - Powell Hall (Scholes) Management Company Limited | Households | 2009 |
| Balcon Way Management Limited | Households | 1985 |
| Balloch Properties Limited | Real estate | 1999 |
| Bally Castle Construction Services Limited | Construction | 2013 |
| Baltimore Innovations Holdings Limited | Administrative & support | 2018 |
| Baltimore Innovations Limited | Administrative & support | 2001 |
| Bamber Court Flats (Management) Limited | Households | 1991 |
| Bannatyne Consulting Ltd | Professional & scientific | 2024 |
| Barbers Wharf Limited | Households | 2000 |
| Barbers Wharf Management Limited | Households | 1988 |
| Barefoot Scenery Ltd | Other services | 2015 |
| Barncopse Management Ltd | Households | 2016 |
| Barnston Global Ltd | Financial services | 2025 |
| Barrett Building Solutions Ltd | Construction | 2019 |
| Barrett Heritage Holdings Ltd | Real estate | 2026 |
| Barrett Properties (Radlett) Limited | Real estate | 2014 |
| Barton Farm (Winchester) Management Company Limited | Households | 2016 |
| Barton House (Kingston) Management Company Limited | Households | 2015 |
| Barton Place (Hendon) Limited | Households | 1994 |
| Barton Properties (Southern) Limited | Real estate | 2007 |
| Barton Properties (UK) Ltd | Real estate | 2002 |
| Barwick Road (Management Company) Limited | Households | 2002 |
| Baytree Court (Management) Limited | Households | 1976 |
| Bcke Construction Limited | Construction | 2020 |
| BE Noteworthy Limited | Information & communication | 2026 |
| Beachcroft Freehold Limited | Administrative & support | 2004 |
| Beagle Orthopaedic Limited | Manufacturing | 2008 |
| Beaufort Mews (Sunbury) Management Company Limited | Households | 2016 |
| Beaufort Place Property Management Limited | Households | 2002 |
| Beech Tree Slade Ltd | Real estate | 2024 |
| Beechwood Property UK Limited | Real estate | 2026 |
| BEH Electrical Limited | Construction | 2019 |
| Beit Ltd | Wholesale & retail | 2016 |
| Belsize Property Limited | Real estate | 2024 |
| Belvedere Management (Northumberland) Limited | Professional & scientific | 2007 |
| Benhams MOT Centre Ltd | Wholesale & retail | 2025 |
| Berkeley Manor (NO. 2) Limited | Households | 2007 |
| Berkeley Manor (NO.1) Limited | Households | 2005 |
| Berkshire Building Equipment Ltd | Construction | 2019 |
| Berwick Woods Management Company Limited | Households | 2000 |
| Beseda Flat Management Limited | Households | 1980 |
| Bexley College (Tower Hill) Residents Management Company Limited | Households | 2015 |
| Beyond the Peel Ltd | Professional & scientific | 2024 |
| Bfdg Events Ltd | Administrative & support | 2023 |
| Biba House Management Company Limited | Households | 2014 |
| Bilbrooke Drive Management Company Limited | Construction | 2024 |
| Bingtel Ltd | Real estate | 2021 |
| Biodiversity Consulting Ltd | Professional & scientific | 2022 |
| Birchwood Solicitors Limited | Professional & scientific | 2013 |
| Birnbeck (Management) Company Limited | Households | 1982 |
| Blackthorne Court (Staines Road) Management Limited | Households | 2005 |
| Blenheim Gate (Maidstone) Management Company Limited | Extraterritorial | 1998 |
| Bloom Project Management Limited | Professional & scientific | 2023 |
| Bloomfield Management Limited | Households | 2010 |
| Blue Aardvark Limited | Professional & scientific | 2020 |
| Blue Canoe Limited | Professional & scientific | 2021 |
| Blue Construction Ltd | Construction | 2015 |
| Blue Marine Travel Limited | Administrative & support | 2004 |