There are some means. First, you can get grant loans from the countries where you want to study, like UK. Second, usually, there are some scholarships available for students, esp international students. There are 2 types. One are the one in HK which supports students to study overseas. One are from the universities which you want to study. However, the scholarship might not be able to cover all your expenses as it might distribute to many students and some scholarships might not set limit in application. So, you should check with it.
P.S. Of course, if you did well in your academic results, there are more chances to get more scholarships as most are determined by your academic reuslts.