| ST Clements House Management Limited | Real estate | 2000 |
| ST Michael's Limited | Households | 1999 |
| ST. Georges Park (Mossley) Management Company Limited | Households | 2006 |
| Stanway Place Management Limited | Households | 2004 |
| Strathmore Management (Richmond) Limited | Households | 1978 |
| Swan Quarter Management Company Limited | Households | 2005 |
| THE Grange (Chipstead) Management Company Ltd | Households | 2013 |
| THE Orchards (Roby) Management Company Limited | Households | 2015 |
| THE Pantiles RTM Company Limited | Extraterritorial | 2009 |
| THE Pavilions (Windsor) Management Company Limited | Households | 2006 |
| THE Works (West Molesey) Management Company Limited | Households | 2006 |
| Tilia House (Surbiton) Management Company Limited | Households | 2021 |
| Timberyard Mews Management Company Limited | Households | 2017 |
| Timothy Place Block 1 RTM Company Limited | Households | 2019 |
| Tinyten Limited | Information & communication | 2025 |
| Tricort Limited | Manufacturing | 1988 |
| Village Court Residents Company Limited | Households | 1998 |
| Waddington AVE. Ltd | Real estate | 2025 |
| Wandle Meadows NO.1 Residents Company Limited | Households | 1988 |
| Waters Edge (Mossley) Management Company Limited | Households | 2005 |
| Weir Court Management Company Limited | Real estate | 2003 |
| Wilton Lodge RTM Company Limited | Households | 2023 |
| Windsor Lodge RTM Company Limited | Professional & scientific | 2011 |
| Woodside Management (Walton-On-Thames) Limited | Households | 1971 |
| Yarn Agency Ltd | Wholesale & retail | 2018 |