| Regenerative Medical Group Limited | Health & social care | 2015 |
| Residents' Association 184 Gloucester Place Limited | Households | 2002 |
| Rexbridge Limited | Real estate | 2005 |
| RH Steelfixer Consultant Limited | Other services | 2014 |
| Ridgeway Financial Solutions Limited | Administrative & support | 2012 |
| Rightful Action Ltd. | Professional & scientific | 2011 |
| Rights Highway Limited | Administrative & support | 2009 |
| Rodan Sourcing Limited | Administrative & support | 2021 |
| Rowney Mount Park Management Limited | Households | 1995 |
| Ruhlax Leisure Limited | Wholesale & retail | 2023 |
| RW Group Ltd | Manufacturing | 2019 |
| S & a Specialist Tuition Ltd | Education | 2019 |
| Sanctum Software Ltd | Other services | 2014 |
| Sanctum Systems Limited | Information & communication | 2023 |
| Saul Wachtel Limited | Real estate | 1961 |
| SC Fire (Contracting) Limited | Other services | 2014 |
| SC Fire (Holdings) Limited | Other services | 2014 |
| Sciforn Ltd | Information & communication | 2021 |
| SH Property Trading Limited | Real estate | 2017 |
| Sharpe Academy of Theatre Arts Limited | Education | 2011 |
| Shepherds Court Harrow Limited | Households | 2017 |
| Silent BOB Ltd | Wholesale & retail | 2003 |
| Silent Spaces Limited | Real estate | 2019 |
| Simandhar Properties Limited | Real estate | 2017 |
| Sixteen Holdings Limited | Information & communication | 2006 |
| Skylark Hill Solicitors LLP | | 2015 |
| Skyrocket London Ltd | Information & communication | 2025 |
| SMA F&B Ltd | Hospitality | 2026 |
| SNE Limited | Administrative & support | 2011 |
| Solarway Limited | Information & communication | 2010 |
| ST. Elisabeth Foundation Limited | Other services | 1980 |
| Starmede Limited | Real estate | 2005 |
| Start the Conversation Ltd | Education | 2025 |
| Sterling Travel Limited | Administrative & support | 2007 |
| Stonecera Limited | Wholesale & retail | 2023 |
| Suffuse Limited | Information & communication | 2009 |
| Sun and the Beach Ltd | Wholesale & retail | 2020 |
| Sundowner Enterprises Limited | Real estate | 2021 |
| Sunningdale Homes Ltd | Construction | 2011 |
| Sunningdale Residents Limited | Real estate | 2011 |
| Supreme Global Limited | Real estate | 2018 |
| Suriya Spa Limited | Other services | 2019 |
| Sweet Botanicals Ltd. | Transport & logistics | 1997 |
| Swiss Cottage Unisex Sauna (Holdings) Limited | Other services | 2006 |
| Talentwell Limited | Professional & scientific | 2009 |
| Tamy Limited | Real estate | 2024 |
| Terre DI SAN Vito UK Limited | Other services | 2014 |
| TGX Accounting Solutions Ltd | Professional & scientific | 2026 |
| THE Doll's House on the Hill Ltd | Hospitality | 2006 |
| THE High Protein Biltong Company Limited | Manufacturing | 2025 |
| THE Media Sales Company (Tmsc) Limited | Other services | 2014 |
| THE Noble Gentleman Ltd | Other services | 2015 |
| THE Patients Association | Health & social care | 1991 |
| THE People Aspect (London) Limited | Administrative & support | 2011 |
| THE Secret Fashion Network Ltd | Administrative & support | 2015 |
| THE VKT Wellness Ltd | Other services | 2018 |
| THE Warehouse Project Ltd | Hospitality | 2023 |
| Thelyse Limited | Administrative & support | 2013 |
| Tiger Composites Limited | Extraterritorial | 2012 |
| TLA Finance Limited | Administrative & support | 2003 |
| Tomka Limited | Administrative & support | 2002 |
| Travers Facilities Management T/A TFM Limited | Professional & scientific | 2017 |
| TW Prospects Limited | Construction | 2004 |
| Two Crown Street Limited | Real estate | 2007 |
| Twynam and Woods Limited | Agriculture & fishing | 2017 |
| UK Psychology Limited | Health & social care | 2015 |
| Unaltro Limited | Administrative & support | 2008 |
| Unistack Limited | Real estate | 2008 |
| Vantage 2020 Limited | Professional & scientific | 2015 |
| Venture Partners Limited | Other services | 1985 |
| Viralbrand Agency Limited | Professional & scientific | 2025 |
| VL Properties Limited | Real estate | 2018 |
| Vodicom Limited | Other services | 2019 |
| Vride Ltd | Construction | 2023 |
| Watermead Development Limited | Construction | 2004 |
| Wecare Private Ltd | Health & social care | 2013 |
| Wentworth Hall Consultancy Limited | Professional & scientific | 2006 |
| West Moorland Propco 1 Limited | Real estate | 2024 |
| West Moorland Propco 2 Limited | Real estate | 2024 |
| Westpak Africa Limited | Professional & scientific | 2022 |
| Wheatsheaf Consultancy Limited | Other services | 2014 |
| Wilson Hawkins Holdings Limited | Real estate | 2007 |
| Wilson Hawkins Property Management Ltd. | Real estate | 2007 |
| Wilson Hawkins Sales & Lettings Limited | Real estate | 2011 |
| Wolf 1 Limited | Real estate | 2017 |
| Woodland Financial Solutions Limited | Financial services | 2017 |
| World Digital Sports Association Ltd | Arts & recreation | 2021 |
| Wykeham Group Ltd | Wholesale & retail | 2013 |
| Yawgold Limited | Hospitality | 2009 |
| Your Garden Room Limited | Construction | 2015 |
| YRV Global Consultancy Services Limited | Professional & scientific | 2023 |
| Zeitgeist Limited | Professional & scientific | 2006 |
| Zircon Trading Ltd | Wholesale & retail | 2003 |