| Arrow Handyman Ltd | Professional & scientific | 2020 |
| Arrowsmith FOX Limited | Administrative & support | 2025 |
| Art Voyage Biennial CIC | Arts & recreation | 2024 |
| Arthur Bear Property Limited | Real estate | 2020 |
| Arthur Mary Developments Limited | Construction | 2016 |
| Artooee Limited | Professional & scientific | 2011 |
| Artwork Solutions Ltd | Professional & scientific | 2025 |
| Arun Fire Limited | Wholesale & retail | 1992 |
| Arun Fire Protection Services Limited | | 1983 |
| Arundel Wealth Management Limited | Administrative & support | 2006 |
| Aryze Studio Ltd | Information & communication | 2021 |
| ASG Medical Ltd | Health & social care | 2024 |
| ASH Copse Farm Limited | Agriculture & fishing | 2016 |
| Ashcroft Place (Epsom) Management Company Limited | Households | 2006 |
| Ashdown Court Residents Company Limited | Households | 2002 |
| Ashdown Place Freeholders Limited | Real estate | 2023 |
| Ashley South Street Housing Limited | Households | 1988 |
| Ashurst Place (Dorking) Company Limited | Households | 2003 |
| Aspel Creative Ltd | Professional & scientific | 2018 |
| Aspirations (Sutton) Management Limited | Households | 2007 |
| Asset Financing Limited | Financial services | 1991 |
| Assheton Associates Limited | Construction | 1995 |
| Assheton Homes Limited | Construction | 1998 |
| Association of Running Clubs | Arts & recreation | 2007 |
| Astec Estates Limited | Real estate | 2001 |
| Astor Gardens Management Company Limited | Households | 2020 |
| Astounding Adventures Limited | Arts & recreation | 2011 |
| Astra Group Limited | Administrative & support | 2000 |
| Atkins Brickwork Ltd | Construction | 2018 |
| Atlantic Research Group Limited | Professional & scientific | 2018 |
| Atom Media Partners Limited | Information & communication | 2019 |
| Atom Publishing Limited | Information & communication | 1996 |
| ATP TEC Ltd | Information & communication | 2013 |
| Aura Holdings (2025) Limited | Professional & scientific | 2025 |
| Aurem Ltd | Information & communication | 2014 |
| Aurora a Media Limited | Information & communication | 2022 |
| Authentic Products Limited | Wholesale & retail | 2017 |
| Autostrada Capital Partners Limited | Other services | 2017 |
| Avanti Sales & Marketing Limited | Professional & scientific | 2006 |
| Avebury Developments Ltd | Construction | 2024 |
| Avonddor Ltd | Hospitality | 2021 |
| Avonmore Properties Limited | Real estate | 2003 |
| Avontuur Limited | Professional & scientific | 2015 |
| Axiom Business Management Limited | Administrative & support | 2012 |
| Axiom Financial Planning Limited | Financial services | 2010 |
| AYA Boutique Ltd | Wholesale & retail | 2014 |
| Azaadi Ltd | Professional & scientific | 2022 |
| Azure Residents Company Limited | Households | 2007 |
| B.T.I.C. Limited | Financial services | 1996 |
| Bacburn Limited | Real estate | 2017 |
| Bacchus Investments Limited | Real estate | 2019 |
| Baccman Investments Limited | Real estate | 2019 |
| Backyard Boxing Limited | Arts & recreation | 2024 |
| Baddest Munch Ltd | Hospitality | 2026 |
| Bagden Wood Electrical Ltd | Construction | 2009 |
| Baic Limited | Real estate | 2018 |
| Baker & Thomas Co Limited | Wholesale & retail | 2024 |
| Bakers (Capel) Management Company Limited | Households | 1985 |
| Balita Limited | Public administration | 2018 |
| Ballantyne Group Ltd | Real estate | 2025 |
| Banana Park Consulting LLP | | 2005 |
| Bancroft Court (Reigate) Management Company Limited | Households | 1982 |
| Bangin Beef Limited | Wholesale & retail | 2021 |
| Baobab Avenue Ltd | Information & communication | 2018 |
| Barbara Houghton Associates Limited | Administrative & support | 1988 |
| Barbara Houghton Temporaries Limited | Administrative & support | 1990 |
| Barbers @ 134 Limited | Other services | 2024 |
| Bargate House (Freehold) Limited | Real estate | 2023 |
| Barhatch and Box Ltd | Professional & scientific | 2020 |
| Barker Road Residents Company Limited | Households | 2002 |
| Barkers Print Limited | Manufacturing | 2016 |
| Barleycorn Meadow Management Limited | Households | 1983 |
| Barn Close Estate Management Company Limited | Real estate | 2022 |
| Barnard's Cyder Ltd | Manufacturing | 2022 |
| Barnes Solutions Ltd | Professional & scientific | 2018 |
| Barnett House (Leatherhead) Residents Limited | Real estate | 1993 |
| Barnstaple & YEO Valley Railway Limited | Construction | 2024 |
| Barry Smale Limited | Health & social care | 2017 |
| Basonas Limited | Agriculture & fishing | 2003 |
| Bassal’S Ltd | Hospitality | 2019 |
| Batubelin Limited | Hospitality | 2024 |
| Bayer Transport Ltd | Administrative & support | 2019 |
| Bayit Hospitality Ltd | Manufacturing | 2024 |
| Baystar Limited | Other services | 2011 |
| BB10 Limited | Arts & recreation | 2020 |
| Bbgumb Limited | Arts & recreation | 2022 |
| BC Inspection Services Ltd | Public administration | 2023 |
| Bcl(Libya) Limited | Construction | 1966 |
| BE Believe Fitness Ltd | Professional & scientific | 2022 |
| Beakys Motorcycles Limited | Wholesale & retail | 2004 |
| Bean Studios Ltd | Professional & scientific | 2018 |
| Bebettor Limited | Information & communication | 2017 |
| Becket Wood Management Company Limited | Households | 1995 |
| Beckett and Saks Dorking Ltd | Wholesale & retail | 2025 |
| Beckett and Saks Holdings Limited | Wholesale & retail | 2026 |
| Beechcroft (Kingston Hill) Residents Association Limited | Households | 1971 |
| Beechcroft Manor (Reigate) Limited | Households | 2009 |
| Beechcroft Strategy Ltd | Professional & scientific | 2025 |
| Beechwood Court (Leatherhead) Residents Management Company Limited | Households | 2006 |
| Beeline B2B Ltd | Professional & scientific | 2021 |