| WILLIS LIMITED | Private company limited by shares | Dissolved |
| WILLIS LIMITED | Private company limited by shares | Live |
| WILLIS (CHINA) LIMITED | Private company limited by shares | Dissolved |
| WILLIS COLLECTION LIMITED | Private company limited by shares | Live |
| WILLIS ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WILLIS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Willis Group Limited | Private company limited by shares | Live |
| WILLIS HONG KONG LIMITED | Private company limited by shares | Live |
| WILLIS INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIS ELECTRIC (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| WILLIS, PETERS AND COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIS TRADING LIMITED | Private company limited by shares | Dissolved |
| WILLIS TRADING LIMITED | Private company limited by shares | Live |
| BENNY & WILLIS TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIS WAVE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLIST LIMITED | Private company limited by shares | Live |
| FIGURE WILLISTAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| WILLISTAR INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| WILLISTON LIMITED | Private company limited by shares | Live |