| Stou Tech Group Co., Limited | Private company limited by shares | Live |
| STOUBY MAGNUS HOLDING LIMITED | Private company limited by shares | Live |
| HODDER & STOUGATON HONG KONG LIMITED | Private company limited by shares | Dissolved |
| STOUKAS LIMITED | Private company limited by shares | Dissolved |
| Stoulan Limited | Private company limited by shares | Live |
| STOUR INTERNATIONAL (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| STOURBRIDGE LIMITED | Private company limited by shares | Dissolved |
| STOURBRIDGE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Cacayurin & Stoustrup Consultancy Limited | | Live |
| STOUT COMPANY LIMITED | Private company limited by shares | Dissolved |
| LEE STOUTE CHONG ARCHITECTS & DESIGNERS LIMITED | Private company limited by shares | Dissolved |
| STOUTWAY COMPANY LIMITED | Private company limited by shares | Live |
| STOUTWIN LIMITED | Private company limited by shares | Dissolved |