Hello, I graduated from a BSc in Biomedical Sciences at UCL this year, and I'm starting medical school later in september.
To be perfectly honest with you, a lot of the people on my course came to Biomed (myself included) because we didn't get into medicine - but I did meet people that genuinely wanted to do biomed, so they applied. However, a lot of the people as they progressed through the years found that they wanted to do research instead, so a majority of them are now doing a masters in a field that they found interesting.
I personally wanted to do medicine all through my Biomed degree, and others that were like me applied and some got into medical school - but from what I saw, this was a minority and there were many more people that wanted to go into research.
In terms of being accredited, as most of the graduates go into further study (masters, medical school etc), I don't think they are.
Also, I think I read that you were asking about pharmacology. The Biomed degree at UCL is structured so that from year 2, you can choose 'streams' ranging from physiology, immunology, pharmacology, neuroscience etc and can study modules that you have an interest in, so even though it is a Biomed degree, you can tailor modules that interest you and only study those!