| ADDISON LIMITED | Private company limited by shares | Live |
| ADDISON CORPORATION LIMITED | Private company limited by shares | Dissolved |
| Addison (HK) Corporation Limited | Private company limited by shares | Live |
| COURT, ADDISON & CO. LIMITED | Private company limited by shares | Dissolved |
| ADDISON DESIGN ASIA LIMITED | Private company limited by shares | Live |
| Addison Nelson Design HK Limited | Private company limited by shares | Live |
| ADDISON ENGINEER LIMITED | Private company limited by shares | Live |
| ADDISON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ADDISON KLEIN GROUP LIMITED | Private company limited by shares | Dissolved |
| ADDISON PHARMACEUTICAL ( H.K. ) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ADDISON EDUCATION GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| ADDISON INTERNATIONAL HOUSEHOLD LIMITED | Private company limited by shares | Live |
| ADDISON INDUSTRIAL (GROUP) LIMITED | Private company limited by shares | Live |
| ADDISON INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ADDISON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ADDISON INVESTMENT AND CONSULTANCY COMPANY LIMITED | Private company limited by shares | Live |
| ADDISON KALLIAS LIMITED | Private company limited by shares | Live |
| ADDISON RESOURCES LIMITED | Private company limited by shares | Dissolved |
| ADDISON TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ADDISON TRADING CO., LIMITED | Private company limited by shares | Live |
| ADDISON-WESLEY CHINA LIMITED | Private company limited by shares | Dissolved |
| ADDISON-WESLEY PUBLISHING COMPANY LIMITED | Private company limited by shares | Dissolved |