I graduated from UCL with a first in Biomedical Sciences last year. I have found it particularly difficult to find a job, and have had to resort to working part-time in retail until I find something like a research assistant position or can save up for a Master's (hopefully 2019 now). It's soul destroying and depressing to say the least. I have applied for numerous research assistant roles and other scientific jobs, where I meet the essential and some of the desirable criteria, and have not even been shortlisted. I have had my CV and cover-letter checked via Careers, and they are both fine.
Yes, biomedical science is interesting, challenging and broad. However, competition is very high for graduate schemes afterwards too. If you do pursue this degree, make sure you try and get experience in any way possible, as it might help. Apply for internships for your second year summer (I applied for three in the UK and wasn't lucky, although a few friends applied abroad and got them), volunteer, join a society ( become a president of one in your last year). Anything that will make you stand out, go for it!