So sorry OP to hear what happened to you.
Unfortunately women who have been sexually assaulted or raped are trapped in a circle of a legal system that has still not thrown of patriarchal attitudes.
Too often the police wont refer cased to the CPS, as the CPS only likes to take on cases it thinks has a very high chance of winning (it make their stats look good) and the CPS are reluctant to put cases to trial because all too often juries dont believe women, or even if the do "dont want to damage a man's reputation, future".
And it is of course of no comfort to you or all the other women let down not just by the system, but I am afraid social attitudes that still assume somehow the woman is at fault.
In response to you saying you dont want what happened to you happen to others I was wondering about these.
Have you tried contacting groups like Justice for Women? https://www.centreforwomensjustice.org.uk/home They may not be able to take up your case, but they may have advice or at the least have more information from your case about what is happening in the "justice" system.
You may get advice from Rights of Women https://www.rightsofwomen.org.uk/get-advice/call-our-advice-lines/
Or write to Jess Phillips who is Parliamentary Under-Secretary of State for Safeguarding and Violence Against Women and Girls https://www.gov.uk/government/people/jess-phillips
Or even your own MP?
I'm sorry that underfunding means you didn't or haven't yet had support from an ISVA.
This seems to be part of the failure of Governments to act on all their bold statements about wanting to end violence against women.
All this does make me wonder whether all the women who have been let down by the police and the CPS like you shouldn't come together as a group. And work together to make more people aware what is going on.
Maybe someone like Julie Bindel would write an article about what has happened to you? I am sure if you wanted she would make it annonymous.
I'm sure you probably know most of this, but also wanted to say I hope you can get some justice.
IMO - definitely make a complaint to the police!