| "Duke of Wellington" (High Bridge) Limited | Real estate | 1964 |
| 'Dallas Media Ltd | Information & communication | 2025 |
| 001 Mobile Solutions Ltd | Wholesale & retail | 2007 |
| 1-11 International Way RTM Company Ltd | Households | 2019 |
| 1-4 Sabah Court Freeholders Limited | Households | 2013 |
| 1.5 Degree Investments Ltd | Financial services | 2024 |
| 11 Barnpark Terrace (Teignmouth) Limited | Households | 2024 |
| 119 Grand Drive Leasehold Management Company Limited | Households | 2010 |
| 119 Grand Drive Management Company Limited | Households | 2010 |
| 132 Green Lane Management Company Limited | Households | 2006 |
| 16PW Consulting Limited | Financial services | 2025 |
| 2 Manage Property Limited | Real estate | 2008 |
| 20 ST Andrews C (SW18) RTM Company Limited | Households | 2024 |
| 210 ST. Margaret's Road Twickenham Management Company Limited | Real estate | 1997 |
| 247 London Plumbers Limited | Construction | 2025 |
| 25 - 27 Stratton Close (Freehold) Limited | Real estate | 2012 |
| 301 Events Ltd | Hospitality | 2021 |
| 31/32 Hans Place Limited | Households | 2006 |
| 35ACR Ltd | Real estate | 2026 |
| 37 Montague Road Management Limited | Households | 2021 |
| 3SIXTY Financial Limited | Financial services | 1998 |
| 3WD Properties Limited | Real estate | 2017 |
| 4482 Sasapari C.I.C. | Administrative & support | 2019 |
| 53 Ennismore Gardens (Freehold) Limited | Households | 2021 |
| 53 Ennismore Gardens Residents Association Limited | Households | 1979 |
| 5OLP Limited | Real estate | 2012 |
| 76/77 Royal Hospital Road Management Limited | Real estate | 1977 |
| 78PLUS Designers Ltd | Wholesale & retail | 2024 |
| 78PLUS Services Ltd | Administrative & support | 2026 |
| 7BRACI Ltd | Construction | 2016 |
| 80 Lupus Street RTM Company Limited | Real estate | 2015 |
| 84-91 Windmill Gate RTM Company Limited | Households | 2014 |
| A & L Cleaning Contractors Limited | Administrative & support | 2002 |
| A Hamilton Construction Limited | Construction | 2011 |
| A Hamilton Developments Ltd | Construction | 2019 |
| A Lawler & Co Limited | Professional & scientific | 2014 |
| A S Treecare Ltd | Agriculture & fishing | 2020 |
| A Wrate Engineering Ltd | Manufacturing | 2019 |
| A Wrate Machinery Limited | Administrative & support | 2019 |
| A&L Supply Ltd | Wholesale & retail | 2022 |
| A.R.M Tiling Ltd | Construction | 2024 |
| A2Z Traders Ltd | Wholesale & retail | 2023 |
| Aarya Estate Ltd | Real estate | 2025 |
| AB Alarms Ltd | Administrative & support | 2021 |
| ABC Express Freight Limited | Transport & logistics | 2018 |
| ABM Accountants Ltd | Information & communication | 2014 |
| ABN Delivery Ltd | Transport & logistics | 2024 |
| Abtos Services Ltd | Health & social care | 2024 |
| Accmasters Limited | Information & communication | 2013 |
| Accsolve Ltd | Professional & scientific | 2025 |
| Acjc Trading Limited | Construction | 2016 |
| ACM2U Limited | Construction | 2019 |
| Acorn Fire & Electrical Services Limited | Professional & scientific | 2008 |
| Acquatek UK Limited | Wholesale & retail | 2025 |
| Active Kidz Coaching Ltd | Education | 2025 |
| Active People Network CIC | Health & social care | 2020 |
| Acuitas Limited | Information & communication | 2011 |
| Acure Property Services Ltd | Construction | 2025 |
| Acvitus Limited | Hospitality | 2025 |
| Adam Jade Homes Limited | Construction | 2002 |
| Addlestone Courtyard Residents Management Limited | Households | 1995 |
| Addstyle Builders UK Ltd | Construction | 2020 |
| ADK Event Logistics Limited | Professional & scientific | 2019 |
| ADREXPRESS24/7 Ltd | Transport & logistics | 2025 |
| Adriana Dickson Ltd | Manufacturing | 2018 |
| Adscad Limited | Arts & recreation | 2016 |
| Advance Dia-Bese Care (UK) Limited | Health & social care | 2009 |
| Aeropets UK Limited | Extraterritorial | 2010 |
| Afra+ Ltd | Wholesale & retail | 2021 |
| AGB Consulting Engineers Limited | Professional & scientific | 2022 |
| AGV Group Ltd | Wholesale & retail | 2025 |
| AIK Constructions & Estates UK Ltd | Real estate | 2024 |
| Air Hvac Ltd | Construction | 2024 |
| Air Mobility Solutions Ltd | Professional & scientific | 2022 |
| Aishwarya Intl Ltd | Wholesale & retail | 2015 |
| Aitch Freight Services Limited | Transport & logistics | 1999 |
| AJT Design Services Ltd | Professional & scientific | 2004 |
| Alamjaan Ltd | Wholesale & retail | 2024 |
| Aldridge & Sons Roofing Ltd | Construction | 2010 |
| Alexal Ltd | Transport & logistics | 2023 |
| Alexander Hire Limited | Hospitality | 2008 |
| Alexander Management Services Limited | Real estate | 2025 |
| Alexander Marquees Limited | Administrative & support | 2009 |
| Alfa Building Services Ltd | Construction | 2024 |
| Algoright Labs Limited | Information & communication | 2025 |
| Alice House Management Company (Staines) Limited | Households | 2002 |
| ALL the Resources (London) Limited | Construction | 2021 |
| Allen Road Management Company Limited | Households | 2017 |
| ALT Construct Ltd | Construction | 2016 |
| Alula Media Limited | Information & communication | 2015 |
| ALV Tech Ltd | Wholesale & retail | 2023 |
| Amaarah Enterprises Ltd | Real estate | 2025 |
| Amal Jaan Ltd | Administrative & support | 2017 |
| Ambrosia Polish Restaurant Limited | Hospitality | 2014 |
| Ample Generators Limited | Information & communication | 2009 |
| AMT UK Investments Limited | Real estate | 2024 |
| Amzee Private Ltd | Wholesale & retail | 2025 |
| Ananta Consulting Ltd | Professional & scientific | 2026 |
| Anar Distribution Ltd | Wholesale & retail | 2024 |
| AND Production Design Ltd | Information & communication | 2023 |