I am not Malaysian, but let me help answering your question since I have several Malaysian friends and we have discussed many things on Malaysian education.
As far as I know, studying in Malaysia is a good choice. There are many good universities in Malaysia with high reputation in the education standards, some of these universities are also accredited by many UK universities and got many overseas guest lecturers as well. If you wish to continue and get your first degree in Malaysia and your postgraduate from UK universities, I guess that should be no problem, unless if you take your first degree in UK and your postgraduate studies in Malaysia then that would weird to me :)
What you can do is searching all over the internet using search engines, find the best universities that offer biomedical science studies, I believe there are many universities in Malaysia offer that particular field of study. And I have heard as well there are many Indian, Pakistani and students from Middle East who study in Malaysia. Hope this little answer would help you getting a better idea to choose your future career and study. Good luck.