| 11 Dunstans Grove Freehold Limited | Households | 2017 |
| 17 Eldon Park Limited | Households | 2022 |
| 17 Ladbroke Crescent W11 Limited | Administrative & support | 2013 |
| 17 Palace Grove Bromley Limited | Households | 2006 |
| 195 High Street Ltd | Households | 2022 |
| 1OFF Homes Ltd | Construction | 2018 |
| 1ST Choice Electrical Services Ltd | Construction | 2015 |
| 1ST Choice Properties Ltd | Real estate | 2019 |
| 2 Grosvenor Road Management (8007) Limited | Real estate | 2013 |
| 21 Wood Vale Management Company Limited | Households | 1984 |
| 22 Southend Road Management Company Ltd | Financial services | 2020 |
| 22.UNION Road Bromley Limited | Households | 2011 |
| 28 Langdon Road Management Company Ltd | Households | 2026 |
| 2ND Street Developments Ltd | Construction | 2020 |
| 360LEARNING UK Ltd | Information & communication | 2019 |
| 365 Athletics Academy Limited | Arts & recreation | 2009 |
| 41 Nevill Road Ltd | Real estate | 2025 |
| 42/44 Grosvenor Road Limited | Real estate | 2016 |
| 43 Wickham Road Freehold Company Limited | Real estate | 2007 |
| 4C Management Limited | Professional & scientific | 2013 |
| 55515 Ltd | Health & social care | 2025 |
| 60 Sandford Road (Freehold) Company Limited | Professional & scientific | 2010 |
| 65 Grosvenor Road Management (8002) Limited | Real estate | 2013 |
| 69 & 71 Croydon Road West Wickham (Freehold) Ltd | Extraterritorial | 2009 |
| 70 Croydon Road Ltd | Real estate | 2025 |
| 93 Brockley Rise (Freehold) Ltd | Households | 2024 |
| A E Print Services Limited | Information & communication | 2014 |
| A Houshian Limited | Wholesale & retail | 2023 |
| A J Martin Counselling Ltd | Health & social care | 2023 |
| A J Wilson Enterprises Ltd | Financial services | 2025 |
| A Noble Gift Limited | Other services | 2023 |
| A R Jeffery Ltd | Information & communication | 2025 |
| A1 Accountancy (London) Ltd | Professional & scientific | 2000 |
| A1 Accountancy Ltd | Professional & scientific | 2025 |
| AA Property Management and Services Ltd | Real estate | 2025 |
| AB Carpentry & Building Ltd | Construction | 2016 |
| Abbey Medical Services Limited | Health & social care | 2011 |
| Able Security Services Ltd | Administrative & support | 2018 |
| Absolute Care Services (Reigate) Limited | Health & social care | 2010 |
| AC Inc Limited | Professional & scientific | 2007 |
| Academy Kitchens (London) Ltd | Construction | 2015 |
| Academy Kitchens Limited | Construction | 1988 |
| Acam Services Limited | Construction | 2016 |
| Ace Vehicle Services Limited | Water & waste | 2014 |
| ACF Cleaning Services UK Ltd. | Households | 2015 |
| Acorn Health Care Limited | Health & social care | 1993 |
| Acsgholdings Ltd | Other services | 2025 |
| ACT III Consulting Ltd | Professional & scientific | 2024 |
| Adagio Enterprises Limited | Construction | 1995 |
| Adam Watts Design Ltd | Professional & scientific | 2011 |
| Adams Contracts Limited | Construction | 2010 |
| Adanganga 1 Limited | Real estate | 2024 |
| Adrian Harrington Limited | Wholesale & retail | 1997 |
| Advance Building Services (London) Limited | Construction | 2004 |
| Advocacy Direct Group Limited | Administrative & support | 2018 |
| AG Allbright Electrical Company Ltd | Construction | 2015 |
| AGS Solutions (London) Limited | Extraterritorial | 2018 |
| AHJ Consulting Limited | Information & communication | 2013 |
| AI Control Services Limited | Professional & scientific | 2024 |
| AI Ordinals Ltd | Information & communication | 2024 |
| Air Reports Ltd | Professional & scientific | 2015 |
| Airprotech Ltd | Construction | 2026 |
| Ajaxis Limited | Professional & scientific | 2012 |
| AJH Flooring Solutions Ltd | Construction | 2009 |
| AJM Electrical Services London Ltd | Construction | 2015 |
| Al-Dahiya (U.K.) Limited | Extraterritorial | 1982 |
| Alakan Property Services Ltd | Real estate | 2021 |
| Alarmtronic Limited | Manufacturing | 1981 |
| Albanybay Limited | Administrative & support | 2010 |
| Aldous Property Group Ltd | Real estate | 2022 |
| Alerro Limited | Hospitality | 2019 |
| Alex Beaton Photography Limited | Other services | 2003 |
| Alexander Graham Properties Ltd | Real estate | 2013 |
| Alfheim Ltd | Information & communication | 2019 |
| ALI Baba Traders Ltd | Wholesale & retail | 2025 |
| ALL B B Properties Limited | Real estate | 2012 |
| Allen Chase Investments Ltd | Real estate | 2020 |
| Alokevia Properties Ltd | Real estate | 2026 |
| Alphex Limited | Wholesale & retail | 2025 |
| Alsoprint Limited | Manufacturing | 2017 |
| Alura Ltd | Professional & scientific | 2025 |
| Always Above Ltd | Transport & logistics | 2020 |
| AMB Sevenoaks Ltd | Wholesale & retail | 2012 |
| Amber Crisis Pregnancy Care | Health & social care | 2011 |
| Amber Process Pipework Limited | Administrative & support | 1997 |
| Ames Consultancy Limited | Professional & scientific | 1995 |
| AMY Clarke Design Ltd | Professional & scientific | 2019 |
| Anchor Images Limited | Professional & scientific | 2006 |
| Andrew James Building Services Ltd | Construction | 2019 |
| Andrew Prince Jewellery Limited | Manufacturing | 2001 |
| Andy Wood Consulting Ltd | Professional & scientific | 2021 |
| Angorfa Limited | Professional & scientific | 2006 |
| Animals at Home (Croydon Area) Limited | Professional & scientific | 2022 |
| Anstice Investments Limited | Administrative & support | 2018 |
| Apis Valens Consulting Limited | Information & communication | 2025 |
| App Architecture Limited | Professional & scientific | 2015 |
| Aqua Quacks Limited | Administrative & support | 2009 |
| Aquacktics Ltd | Education | 2022 |
| Aquarela Global Ltd. | Wholesale & retail | 2022 |
| Aravis UK Ltd | Professional & scientific | 2022 |