| 2020 Ceramics Ltd | Wholesale & retail | 2020 |
| A & L Curtilage Limited | Administrative & support | 2022 |
| A C Electrical (South) Ltd | Construction | 2000 |
| A MEW Car Transportation and Servicing Limited | Wholesale & retail | 2016 |
| A1 Alloys Ltd | Wholesale & retail | 2005 |
| A1 Wheels Ltd | Wholesale & retail | 2024 |
| Absolute REG Ltd | Administrative & support | 2014 |
| AC Surfacing Ltd | Construction | 2013 |
| ACT Consultancy Services Ltd | Professional & scientific | 2011 |
| ACT on Fact Ltd | Professional & scientific | 2024 |
| Actuate London Ltd | Professional & scientific | 2023 |
| Akge Limited | Information & communication | 2023 |
| Aksss Ltd | Wholesale & retail | 2018 |
| Aktigin & Co. Ltd. | Construction | 2026 |
| Alpha Building Services (South) Ltd | Construction | 2007 |
| Alpha Environmental Limited | Water & waste | 2015 |
| Alpha Homes (South) Ltd | Construction | 2016 |
| Anataxis Consulting Limited | Professional & scientific | 2012 |
| AP Private Hire Ltd | Transport & logistics | 2025 |
| Apex Invest Ltd | Real estate | 2024 |
| Appetite Catering Limited | Hospitality | 2017 |
| AR Surfacing Ltd | Construction | 2025 |
| ARC Electrical (South) Ltd | Construction | 2026 |
| ARC EN Ciel Limited | Information & communication | 1988 |
| Arcanum Advisory Limited | Administrative & support | 2011 |
| Arque Consulting Limited | Professional & scientific | 2004 |
| Arrowhouse Property Services Limited | Real estate | 2010 |
| Artron Services Limited | Financial services | 2018 |
| Arundel Aviation Limited | Transport & logistics | 2001 |
| Atkinson Construction Services Ltd | Professional & scientific | 2020 |
| Atomic Tackle Direct Limited | Wholesale & retail | 2011 |
| Auto Paint FIX Ltd | Wholesale & retail | 2008 |
| Autoflame Engineering Limited | Manufacturing | 1972 |
| Autoflame Service and Support Limited | Other services | 2009 |
| AW Accountancy Ltd | Professional & scientific | 2023 |
| Baelara Ltd | Other services | 2025 |
| Bankside Consulting Limited | Professional & scientific | 2009 |
| Baron Aviation Ltd | Transport & logistics | 2025 |
| Bartlett Hair Limited | Other services | 2026 |
| BE Inspired Residential Care Services Ltd | Administrative & support | 2025 |
| Beaconsfield Building Ltd | Real estate | 2008 |
| Beaver Accounting Limited | Professional & scientific | 2001 |
| BEN Matthews Online Limited | Real estate | 2013 |
| Benasa Limited | Administrative & support | 2006 |
| Benjamin Matthews Limited | Real estate | 2013 |
| Benjamins DRY Cleaners Ltd | Administrative & support | 2020 |
| Bennell Homes Ltd | Real estate | 2019 |
| Bentley Moore Executive Limited | Professional & scientific | 2013 |
| BH Surfacing Limited | Construction | 2024 |
| Biggin Hill Air Taxis Limited | Other services | 2008 |
| Biggin Hill Airport Development Limited | Construction | 2019 |
| Biggin Hill Airport Hotel Limited | Hospitality | 2020 |
| Biggin Hill Airport Limited | Other services | 1994 |
| Biggin Hill Airshow Limited | Administrative & support | 2021 |
| Biggin Hill Squash Club LLP | | 2006 |
| BK LAB Technology Limited | Education | 2016 |
| Black Swan Engineering Ltd | Professional & scientific | 2021 |
| Blank Canvas INK Ltd | Wholesale & retail | 2024 |
| Blue Lion LDN Limited | Administrative & support | 2022 |
| Blue Tennis Ltd | Wholesale & retail | 2015 |
| Bluecare Wellbeing Ltd | Health & social care | 2021 |
| Boswell Electrical Services Limited | Construction | 2001 |
| Bourn Estates Ltd | Real estate | 2024 |
| Breathe Event Consulting Ltd | Administrative & support | 2014 |
| Bricks 2 Size Limited | Wholesale & retail | 2010 |
| Bromley Windows and Doors (Kent) Ltd | Construction | 2025 |
| Bubbles Air Conditioning Ltd | Energy | 2024 |
| Bubbly Homes Limited | Health & social care | 2022 |
| Bulla Connect Ltd | Professional & scientific | 2020 |
| C D Motorhome Adventures Ltd | Administrative & support | 2025 |
| C J Francis Limited | Health & social care | 2017 |
| Camo Aero Ltd | Professional & scientific | 2019 |
| Capital Car Park Control Ltd | Other services | 2020 |
| Castle Heslop Associates Limited | Professional & scientific | 2009 |
| Castle Heslop Consultancy Ltd | Professional & scientific | 2013 |
| Centramedica Limited | Health & social care | 2015 |
| Ceramic Plans Limited | Wholesale & retail | 2025 |
| Cherry Lodge Golf Club Limited | Arts & recreation | 1993 |
| Chikot Limited | Health & social care | 2018 |
| Citycraft Limited | Administrative & support | 2001 |
| CJ Curtis Limited | Construction | 2021 |
| CKC Build Ltd | Construction | 2020 |
| Coldharbour Lane Investments Limited | Real estate | 2013 |
| Communications Installations & Property Services Limited | Construction | 2003 |
| Complete Carpentry and Bespoke Cabinetry Ltd | Manufacturing | 2024 |
| Concept Tools and Equipment Limited | Professional & scientific | 2002 |
| Coverock Insulation Limited | Wholesale & retail | 2020 |
| Coverock Limited | Wholesale & retail | 2023 |
| Coverway Limited | Administrative & support | 2000 |
| Crabcar Limited | Wholesale & retail | 2011 |
| CTG Paint Limited | Construction | 2021 |
| CTU Interiors Ltd | Construction | 2016 |
| Curran Construction & Landscaping Limited | Construction | 2026 |
| CV Metal Fabrications Limited | Manufacturing | 2024 |
| D/W Surfacing (South) Ltd | Construction | 2012 |
| DAH Partnership Ltd | Professional & scientific | 2017 |
| Dampworks Ltd | Construction | 2011 |
| Daviesfsr Ltd | Public administration | 2023 |
| Designled Ltd | Construction | 2000 |
| Devon Dreams Ltd | Real estate | 2026 |