| 4RATS Productions Ltd | Arts & recreation | 2022 |
| 5 & 6 Moor Mead Road Limited | Real estate | 2023 |
| 5 & 7 Godstone Road Ltd | Real estate | 2016 |
| 5 Cambridge Park Limited | Real estate | 2002 |
| 5 Star Lofts London Ltd | Construction | 2019 |
| 5 Star VG Ltd | Construction | 2020 |
| 5 Victoria Road Management Company Limited | Households | 2000 |
| 5 Waldegrave Gardens Freeholders Ltd | Households | 2008 |
| 50 Denton Road Freehold Limited | Households | 2022 |
| 51 Popes Grove Limited | Households | 2003 |
| 51 ST Margarets Road Management Limited | Households | 1991 |
| 5360 Holdings Limited | Financial services | 2018 |
| 58 Albion Ltd | Real estate | 2025 |
| 58/64 Selkirk Road Management Company Limited | Professional & scientific | 2005 |
| 5A Properties Ltd | Real estate | 2023 |
| 5G Roofing Ltd | Construction | 2025 |
| 6 Gordon Avenue Ltd | Households | 2025 |
| 6 Longbrook Terrace (Exeter) Management Company Limited | Households | 2023 |
| 6 Station Road Residents Association Limited | Other services | 1998 |
| 63 Amyand Park Road (Management) Limited | Households | 1994 |
| 65 Amyand Park Road Limited | Extraterritorial | 1997 |
| 66 Holding Blue Limited | Professional & scientific | 2024 |
| 675 Wandsworth Road Limited | Real estate | 2007 |
| 69A and 69B Management Company Limited | Real estate | 2009 |
| 7 Bedford Place Management Limited | Real estate | 2007 |
| 7 Fassett Road Management Company Limited | Households | 1985 |
| 7 Park Road Residents Limited | Administrative & support | 1995 |
| 7 Saatvik Ltd | Hospitality | 2025 |
| 7 Stone Real Estate Ltd | Real estate | 2025 |
| 7 Walpole Gardens Management Limited | Households | 1997 |
| 71 ST. Margarets Road Twickenham Residents Company Limited | Households | 2000 |
| 72 Copthall Gardens Limited | Households | 1996 |
| 73 ST Margaret's Road (Freehold) Limited | Real estate | 2021 |
| 77 Colne Road Freehold Limited | Households | 2026 |
| 8 Oxford Road Management Company Limited | Households | 2019 |
| 8 Sheen Park Management Limited | Households | 1999 |
| 80 Wellington Road Freehold Ltd | Real estate | 2016 |
| 81A ST. Margaret's Road Management Limited | Households | 1997 |
| 82 Fielding Avenue Twickenham Freehold Limited | Real estate | 2008 |
| 83 ST Margarets Road Management Company Limited | Households | 2009 |
| 84 & 86 Winchester Road Freehold Limited | Extraterritorial | 2013 |
| 84/86 Telford Avenue London SW2 Limited | Households | 1997 |
| 87 ST Margarets Road Limited | Households | 2018 |
| 878TEN (UK) Ltd | Information & communication | 2020 |
| 9 Queens Road Twickenham Housing Association Limited | Hospitality | 1988 |
| 97 Strawberry Vale Limited | Households | 1997 |
| 9A the Triangle Limited | Real estate | 2022 |
| A and F Services (Twickenham) Limited | Construction | 2010 |
| A Caribbean Story Film Ltd | Information & communication | 2023 |
| A DE V Limited | Education | 2006 |
| A Fine Choice Ltd | Wholesale & retail | 2010 |
| A G (U.K) Enterprises Limited | Wholesale & retail | 2011 |
| A G Tailoring Limited | Manufacturing | 2025 |
| A Gibson Consulting Ltd | Construction | 2020 |
| A Giving Plate CIC | Education | 2025 |
| A LA Clinic Ltd | Health & social care | 2024 |
| A Sarlas Racing Team Ltd | Arts & recreation | 2026 |
| A Taste of Twickenham CIC | Administrative & support | 2023 |
| A to R Recycling Limited | Water & waste | 2019 |
| A&T Financial Services Limited | Professional & scientific | 2023 |
| A-Ok Live Limited | Arts & recreation | 2023 |
| A.A Sports Therapy Ltd | Health & social care | 2025 |
| A.J.Worldwide Services Limited | Transport & logistics | 1999 |
| A.R.C. Property Maintenance Limited | Administrative & support | 2015 |
| A.R.C. Property Services Limited | Administrative & support | 2017 |
| A.R.M Dental Ltd | Health & social care | 2020 |
| A1 Home Improvement London Ltd | Construction | 2023 |
| A2Z Hands Property Maintenance Ltd | Construction | 2022 |
| AA & RA Service Limited | Transport & logistics | 2024 |
| AAA Media Ltd | Professional & scientific | 2025 |
| AAA Plumbing & Heating Limited | Construction | 2026 |
| AAB Accounting Services Ltd | Professional & scientific | 2014 |
| Aagss Limited | Real estate | 2024 |
| Aarav Limited | Information & communication | 2013 |
| Aardvark Goldstone Legal Ltd | Professional & scientific | 2022 |
| AARIA1 Limited | Wholesale & retail | 2022 |
| AARIA2 Limited | Wholesale & retail | 2022 |
| AARIA3 Limited | Wholesale & retail | 2024 |
| AAW Plumbing and Heating Ltd | Construction | 2019 |
| Aaxro Limited | Manufacturing | 2015 |
| Abacus Coffee House Limited | Hospitality | 2019 |
| Abacus ERP Limited | Information & communication | 2014 |
| Abacus Investments Limited | Real estate | 2019 |
| Abbeyflight Limited | Transport & logistics | 1992 |
| Abbie Knight International Ltd | Professional & scientific | 2009 |
| Abbtocone Limited | Wholesale & retail | 2001 |
| ABC Code Ltd | Hospitality | 2017 |
| ABC Correct Ltd | Wholesale & retail | 2015 |
| Abel Collectibles Ltd | Wholesale & retail | 2026 |
| Ability & Inclusion Pathways Ltd | Education | 2026 |
| Ablehills Care Agency Ltd | Health & social care | 2020 |
| Abodial Design & Build Limited | Construction | 2022 |
| Abodial Property Ltd | Real estate | 2020 |
| Abracadabra Event Services Limited | Administrative & support | 2020 |
| Abroad Finance Ltd | Professional & scientific | 2013 |
| Absolutely Flour Ltd | Wholesale & retail | 2023 |
| Abstrct Ltd | Professional & scientific | 2017 |
| Abuhurera Ltd | Wholesale & retail | 2025 |
| Abundigro Ltd | Wholesale & retail | 2025 |
| AC Windows Limited | Construction | 2019 |