There are a lot of factors to consider. Firstly, the course e.g. when they first start placements, how much pbl is involved, how they teach anatomy.
You also want to look at the university, for example if you want to study at a campus, city or collegiate University or if you want to study in a larger city or a smaller town.
There are many other factors such as whether you have to take the ucat or take the bmat for universities and how many international students they take in your case.
From my very little experience with the application, it is about applying tactically. Look at what strengths does your application have, for example, if you have a really high UCAT you may want to apply to UEA as ucat makes up 50% of post interview selection or if you have good gcse grades, you may want to consider universities that look at your gcse grades for interview selection. You want to maximise your chances of getting interviews and offers.
Personally, at this point last year, I looked at some of the courses online to get an understanding of the differences between them, but you still have a lot of time to decide and there are many factors that will affect your application e.g. predicted grades and ucat score.