Financing a third degree

Hi there. I have already had 2 SFE loans to cover my undergraduate biological sciences degree, and my masters in physician associate studies. I am now applying to a 4 year graduate medicine course (Warwick, Chester, Southampton, Worcester) but do not know how I will fund it. I do not know if I would be eligible for a further loan from SFE, and I do not know how I might be able to get sponsorship. My mother is a single parent who has retired and will not be able to support me.
I am single and have been saving but do not have the funds to pay for more than one year.
Please advise! It is my dream to do this course and I have worked so hard for it.