| Britannia Study Link (Asia) Limited | Private company limited by shares | Live |
| ASIA STUDY LINKS LIMITED | Private company limited by shares | Dissolved |
| CENTRE FOR THE STUDY OF LITERACY LIMITED | Private company limited by shares | Dissolved |
| LOK-YEE STUDY TOUR LIMITED | | Live |
| Study Mate Limited | Private company limited by shares | Live |
| OUTSTANDING CHINESE STUDY MEETING LIMITED | Private company limited by shares | Dissolved |
| STUDY METHODS LIMITED | Private company limited by shares | Dissolved |
| STUDY MISSION LIMITED | Company limited by guarantee | Live |
| ONLINE STUDY LIMITED | Private company limited by shares | Dissolved |
| STUDY ONLINE LIMITED | Private company limited by shares | Dissolved |
| STUDY OVERSEAS LIMITED | Private company limited by shares | Live |
| YINUO EDUCATION OVERSEAS STUDY LIMITED | Private company limited by shares | Live |
| HK MeiOu Immigration & Overseas Study Consultant Limited | Private company limited by shares | Live |
| SCHOLARS OVERSEAS STUDY LIMITED | Private company limited by shares | Dissolved |
| I. STUDY PUBLISHING LIMITED | Private company limited by shares | Live |
| Sakura Study Limited | Private company limited by shares | Live |
| HOPE Study Abroad Service HK Limited | | Live |
| SHANGHAI AMERICA STUDY ABROAD CO., LIMITED | Private company limited by shares | Live |
| Smart Study Company Limited | Private company limited by shares | Dissolved |
| U.S.A TAI LI ORGANISMS TECHNOLOGY STUDY INSTITUTIONS LIMITED | Private company limited by shares | Live |
| New Study Tour Limited | Private company limited by shares | Dissolved |
| STUDY TOUR 365 LIMITED | Private company limited by shares | Live |
| ORCA STUDY TOURS LIMITED | Private company limited by shares | Live |
| CHILL STUDY TRAVEL LIMITED | | Live |
| NEW DISCOVERY STUDY TRAVEL LIMITED | | Live |
| TRUMAN STUDY CENTER LIMITED | Private company limited by shares | Dissolved |
| Angel (UK) Study Centre Limited | Private company limited by shares | Live |
| U-TOUR OVERSEAS STUDY CONSULTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| VIETNAM SNACKS STUDY ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| STUDY VISA (USA) LIMITED | Private company limited by shares | Dissolved |
| Study With Me Limited | Private company limited by shares | Live |
| STUDY WORK & TRAVEL GROUP LIMITED | Private company limited by shares | Dissolved |
| Yeah Study Limited | Private company limited by shares | Live |
| PUI YING STUDY CENTRE LIMITED | Private company limited by shares | Dissolved |
| Study Zone Limited | Private company limited by shares | Live |
| Studycat Limited | Private company limited by shares | Live |
| STUDYFINDER LIMITED | Private company limited by shares | Dissolved |
| Studyfreely Limited | Private company limited by shares | Dissolved |
| STUDYFUN EDUCATION GROUP LIMITED | Private company limited by shares | Dissolved |
| StudyHo Limited | Private company limited by shares | Live |
| Studyhub HK Limited | Private company limited by shares | Live |
| HONG KONG BUDDHISM STUDYING LIMITED | Private company limited by shares | Live |
| LEVEL UP STUDYING SERVICE LIMITED | Private company limited by shares | Live |
| Studynet Group Limited | Private company limited by shares | Live |
| STUDYOW LIMITED | Private company limited by shares | Live |
| STUDYPUG (HK) LIMITED | Private company limited by shares | Live |
| STUDYPUG HOLDING (HK) LIMITED | Private company limited by shares | Live |
| STUDYROAD (OVERSEAS) LIMITED | Private company limited by shares | Dissolved |
| STUDYSEARCH LIMITED | Private company limited by shares | Dissolved |
| STUDYSTREAM LIMITED | Private company limited by shares | Live |
| Studyvip Online Education HK Limited | Private company limited by shares | Live |
| STUDYWIZ LIMITED | Private company limited by shares | Dissolved |
| STUDY-Z LIMITED | Private company limited by shares | Live |