| A P Diesels UK Ltd | Manufacturing | 2010 |
| Ashton Lodge Limited | Health & social care | 1995 |
| Berkeley Healthcare Limited | Health & social care | 1994 |
| Bond Street Communications Limited | Information & communication | 2009 |
| Bridge House Holdings Limited | Health & social care | 2000 |
| Brockman Property Services Limited | Real estate | 2019 |
| Brooks & Brooks Productions Limited | Information & communication | 2012 |
| Castle House Collection Limited | Extraterritorial | 2025 |
| Chariot Group Ltd | Real estate | 2022 |
| Copper & Oak Capital Ventures L.P. | | 2021 |
| Coxwell Homes Limited | Health & social care | 1994 |
| David Morison Design Ltd | Information & communication | 2015 |
| DH Project 44 Limited | Construction | 2003 |
| DJH Bathrooms Ltd | Construction | 2018 |
| E&N Consultancy Services Limited | Professional & scientific | 2019 |
| Epik Ideas Limited | Administrative & support | 2011 |
| George Potter Care Home Limited | Health & social care | 1996 |
| George Potter House Ltd | Health & social care | 2009 |
| Gold Fingers Limited | Information & communication | 2009 |
| Guardswell Group Limited | Financial services | 2024 |
| Guardswell Group Midco Limited | Financial services | 2026 |
| Guardswell Group Newco Limited | Financial services | 2026 |
| Hurstlane Limited | Real estate | 2000 |
| Laurels Care Limited | Health & social care | 2005 |
| Mediclinic (UK) Ltd | Education | 2003 |
| Results Driven Coaching Ltd | Other services | 2024 |
| Safari Shutters & Blinds Ltd | Construction | 2025 |
| Shakhon Ltd | Real estate | 2019 |
| Signal Hill Limited | Information & communication | 2010 |
| Sound Communication Ltd | Professional & scientific | 2016 |
| Sovereign (Coxwell Hall) Limited | Health & social care | 1999 |
| Staines Diesel & Electrical Services Ltd | Wholesale & retail | 2008 |
| Studio Tabi Ltd | Professional & scientific | 2025 |
| THE Englefield Green Team CIC | Professional & scientific | 2024 |
| THE Laurels Care Centre Limited | Health & social care | 1997 |
| THE Yogaroot Ltd | Other services | 2010 |
| Undici Ltd | Real estate | 2003 |
| Vasistha Limited | Real estate | 2022 |
| Young Actors of Windsor Limited | Arts & recreation | 2015 |
| Zetorian Limited | Agriculture & fishing | 2004 |