| 1 Cobham Road TMC Limited | Households | 2025 |
| 1-34 Collingwood Place Freehold Company (2018) Ltd. | Professional & scientific | 2018 |
| 10 International Limited | Wholesale & retail | 2006 |
| 10 ST. Bride Street Limited | Construction | 1989 |
| 10000 Hours Ltd | Administrative & support | 2015 |
| 106 Denbigh Street (Freehold) Limited | Households | 2015 |
| 11-22 Highridge Court Limited | Households | 2000 |
| 110 High Street Management Co. Ltd. | Households | 2003 |
| 119-122 Maybury RD Management Co. Limited | Households | 2006 |
| 12-16 ELM Road Management Limited | Households | 2017 |
| 14 Thornton Hill Management Co. Limited | Households | 2002 |
| 148 Worple Road Wimbledon (Residents Association) Limited | Households | 1983 |
| 19 the Spinney Ltd | Hospitality | 2009 |
| 2 Breathe Creative Limited | Construction | 2009 |
| 20/22 Anyards Road Management Company Limited | Households | 1998 |
| 214 Station Studios Ltd | Wholesale & retail | 2026 |
| 23 Fitness Consulting Limited | Education | 2023 |
| 23 Mattock Lane Limited | Households | 2000 |
| 24 to 26 Weatherhill Road Residents Company Limited | Households | 2025 |
| 26 Lupus Street Management Limited | Households | 2001 |
| 2BREATHE @Home Limited | Construction | 2017 |
| 30-32 Lower Boston Road Management Limited | Households | 2003 |
| 35 Crockerton Road Management Company Ltd | Real estate | 1993 |
| 360 Design Limited | Professional & scientific | 2010 |
| 37 ST Andrews Square Limited | Households | 2005 |
| 3DM Property Ltd | Real estate | 2018 |
| 3RD Line IT Limited | Information & communication | 2012 |
| 3TOP Aviation Services Limited | Wholesale & retail | 1999 |
| 43 a & B Farlton Road (Freehold) Company Limited | Households | 2016 |
| 4U Property Limited | Professional & scientific | 2016 |
| 52 Woodbridge Road Management Company Limited | Households | 2010 |
| 53 Brondesbury Road Limited | Households | 2019 |
| 54 Solutions Limited | Information & communication | 2009 |
| 5C Chic'N Love Ltd | Hospitality | 2022 |
| 5C Srilankan Cuisine Ltd | Hospitality | 2025 |
| 6 Figures Limited | Information & communication | 1987 |
| 6 Tyrell House Limited | Real estate | 2022 |
| 63 White Lion Street Management Company Limited | Real estate | 1998 |
| 69 Lower Road Kenley (Flat 5) Limited | Real estate | 2018 |
| 7 Harewood Road Limited | Construction | 2016 |
| 71 & 73 the Street Management Company Limited | Households | 2005 |
| 77 Worple Road RTM Company Limited | Households | 2009 |
| 86 South Street Limited | Real estate | 1978 |
| 8BA Services Ltd | Hospitality | 2023 |
| 9 ST Johns Road Freehold Limited | Households | 2022 |
| 91 Kngs Road, New HAW Limited | Construction | 2024 |
| 9A Purcell Crescent London Limited | Households | 2013 |
| A & P Services (Surrey) Limited | Wholesale & retail | 2006 |
| A Virtual Assistant Ltd | Public administration | 2021 |
| A W I G Limited | Financial services | 2021 |
| A&S Digital Marketing Ltd | Professional & scientific | 2018 |
| A-Rxn Ltd | Real estate | 2024 |
| A.Boyall Limited | Wholesale & retail | 1953 |
| A.H.G Consultancy Ltd | Financial services | 2024 |
| A.L.Tozer Limited | Agriculture & fishing | 1944 |
| A.R.G Capital Ltd | Professional & scientific | 2021 |
| A.T.M. Strategic Management Consulting Limited | Professional & scientific | 2000 |
| A2B Catalyst Limited | Administrative & support | 2025 |
| Aaboptics Ltd | Health & social care | 2022 |
| Aalondondesign Limited | Wholesale & retail | 2023 |
| Abbotsford Capital Limited | Financial services | 2016 |
| Abby Stream Limited | Construction | 2012 |
| Abesthetic Ltd | Health & social care | 2016 |
| Abiztec Limited | Information & communication | 2014 |
| Abridge Vehicle Management Limited | Administrative & support | 2003 |
| Academy House & Cottages Management Company Ltd | Households | 2012 |
| Accelerator Accounting Limited | Professional & scientific | 2011 |
| Accord C.A.D. Services Ltd. | Professional & scientific | 1994 |
| Accord Property Holdings Limited | Real estate | 2017 |
| ACCUR8GLOBAL Limited | Administrative & support | 2026 |
| Aces Marketing Ltd | Professional & scientific | 2014 |
| ACF Homes Ltd | Real estate | 2025 |
| ACG Electrical Services Ltd | Construction | 2022 |
| Achieve Together Limited | Health & social care | 1996 |
| Achieve Together Services Limited | Administrative & support | 2022 |
| ACL Display Services Limited | Administrative & support | 1994 |
| Acme Building Development Limited | Construction | 2003 |
| Acorn Garden & Landscaping Services Limited | Administrative & support | 2024 |
| Action Theatre Club LLP | | 2018 |
| Active Home Solutions Ltd | Construction | 2020 |
| Active Recruiting Consultants Limited | Administrative & support | 2008 |
| Acuity Business Support Ltd | Professional & scientific | 2019 |
| Adair Solutions Limited | Other services | 2018 |
| Adalta Recruitment Ltd | Professional & scientific | 2022 |
| ADC Exquisite Services Ltd | Transport & logistics | 2018 |
| ADD Strategy Consultancy Limited | Information & communication | 2017 |
| Adeona Limited | Financial services | 2008 |
| Adeptina Limited | Professional & scientific | 2024 |
| Adeptly AI Ltd | Information & communication | 2019 |
| Adhdalt Ltd | Other services | 2025 |
| Adhspace Ltd | Information & communication | 2026 |
| Adrian Walsh Financial Consulting Limited | Professional & scientific | 2009 |
| ADV Residential Building and Design Ltd | Construction | 2026 |
| Advance Medical Africa Ltd | Health & social care | 2021 |
| Advent Commercial Property Ltd | Real estate | 2026 |
| Advent Domestic Property Ltd | Real estate | 2026 |
| Adviser Intelligence Limited | Information & communication | 2026 |
| AEA Super Cleaning Services Limited | Administrative & support | 2022 |
| Aella Cora Limited | Professional & scientific | 2021 |
| Aerial Yoga Teacher Training Ltd | Health & social care | 2025 |