Late reply but I have had SO many discussions about this so I really want to give my 2 cents. I agree with what most people have said about biomed. When you’re in it, it can be so tough but there will be moments during the semester when you really appreciate the opportunities you’ve been given, like M2M (albeit hardest subject I have ever taken by far). The content was pretty tough for me to wrap my head around but I think being in the mere presence of accomplished researchers and doctors inspired and motivated me to study and reaffirmed my belief that biomed was the right pathway (for me).
Like everyone else said, the cohort in biomed is much smaller so it’s easier to make friends, more so than in science. Furthermore, I think there’s a real sense of camaraderie so you feel less alone and isolated than you might in science. That being said, I barely went to uni and watched all my lectures at home, so if you plan it right (i.e. do some summer classes and choose subjects that are entirely lecture based- I recommend mechanisms of disease) you too can have the same luxury.
If given my choice again I’d still go with biomed but during first semester this year I was definitely not singing the same song. Truthfully speaking, I think most of the stress comes from maintaining/improving your GPA to get into your desired postgrad course so sometimes being part of a really motivated and driven cohort can become exhausting and overwhelming. Also, as much as I hate to say it, sometimes your hard work isn’t rewarded at uni. From my own experience, some biomed and science subjects are just REALLY tough and push people to their absolute limits- really assesses what you are capable of. Most of the time it’s very rewarding and surprising to know that you can learn and understand so much more than you think you can but sometimes (rarely) it can be disappointing to know that all your hard work hasn't paid off.
TL;DR, if you want friends, brilliantly organised subjects (looking at u m2m, BUT NOT U HSF) and competition drives you, choose biomed. If you want freedom of subject selection but don’t really care about friends, choose science. (I’m really indecisive so it was biomed for me!)