for cuhk medicine,
"The minimum requirement for interview is 4 A* and, in addition, all marks should be over 90%. ... In 2011, the average mark required to be competitive was at least 95%, and some students with 4 A* were not selected for interview.
The usual requirement for interview would be 10A* for GCSE, and 4 subjects (not including Chinese) at AS level, with average marks over 95%. "
source: cuhk medicine admission website
http://www.med.cuhk.edu.hk/v7/s15_05.htmwell my interpretation is that you PREDICTED GRADES of GCE A-level should be at least 4A* in order to have a chance for an interview. you should also have outstanding AS UMS scores and very good GCSE grades.
to get a place, u must receive offer from the university. without offer, no matter how many A* u've got eventually, u won't be admitted into the uni. since on the website:
"Offers of admission made early are usually conditional to obtaining 4 A* at A-level (not including Chinese), with marks over 90%. "
i suppose u should have a predicted grade of at least 4A*, and then in august u should achieve 4A* or above in A2.
personal experience: i was not admitted into neither university last year but this year i received offers for medicine from both unis. so i suppose this year since there are more than double (cuhk: ~10 places for GCE last year but now >30 places), the interview requirement might be slightly lower than last year.
for hku medicine,
there is no solid information on the website (
http://www.med.hku.hk/03edu_undergrad_mbbs.htm)
but according to the information, last year offers are made with conditions above 3A*1A. if u don't get an offer in the interview round, u can still work very hard and get >4A* in A2. then in late august, if you're results are reallyreally good, u will be called for an interview but the places left will be very little (4 left out of 150 in august 2011, with >30 competitors of 4A* or above)
sorry for the long and chunky and disorganized reply. hope this helps!