I got UUU at A level the first time round, and then did a McDonalds apprenticeship for 15 months, but ended with no qualification. I'm retaking A levels this year, but will probably get UUU-EEE. My GCSE grades are all A*-B. I'm 20 years old. I've been rejected from all choices so far, so now I'm looking at foundation degrees through UCAS Extra/Clearing.
I'm looking to do microbiology.
What makes you think you'll be successful at a higher level of study given your A level performance?
Not trying to be condescending, it's an investment after all with far greater risks, have you not considered looking into other apprenticeships?