| VICON LIMITED | Private company limited by shares | Dissolved |
| VICON COMPANY LIMITED | Private company limited by shares | Dissolved |
| Vicon Group Co., Limited | | Live |
| VICON FREIGHT SERVICE CO., LIMITED | Private company limited by shares | Dissolved |
| VICON TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| VICON CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Live |
| Vicon Control Refrigeration System Engineering Limited | Private company limited by shares | Live |
| VICON DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| VICON DEVELOPMENT LIMITED | Private company limited by shares | Live |
| VICON ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| VICON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| VICON ENTERPRISES LIMITED | Private company limited by shares | Live |
| HONGKONG VICON INDUSTRIAL LIMITED | | Live |
| Vicon Industries Limited | Private company limited by shares | Live |
| VICON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| VICON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| VICON MACHINERY COMPANY LIMITED | Private company limited by shares | Live |
| Vicon Assets Management Limited | Private company limited by shares | Live |
| VICON SHIPPING LIMITED | Private company limited by shares | Live |
| VICON STONE CO., LIMITED | Private company limited by shares | Live |
| VICON TRADING LIMITED | Private company limited by shares | Dissolved |
| VICONIA INVESTMENT LIMITED | Private company limited by shares | Live |
| VICONY CO., LIMITED | Private company limited by shares | Live |