Ok well the first thing to remember is it isn't up to you to "drop the case". You can be forgiven for thinking so as people always hear about "pressing charges" on the television. That is how things happen in America but here in the UK only the Police/CPS can decide whether something is prosecuted or not; it isn't actually the victim's decision.
However, if you've retracted your statement then the Police have a lot less evidence to go off.
When it comes to deciding whether to prosecute then there is a 2 stage test, both stages being very important:
1) Is there sufficient evidence?
2) Is it in the public interest to prosecute?
Your retraction means that the case might not get past stage 1. Your wish not to see your partner prosecuted is relevant to (2) but doesn't outweigh the public importance of stopping crime generally. The Police have to make sure people are protected.
So in answer to your question, if you were the only witness and you have retracted, it's likely that on 11 June the Police will decide there isn't enough evidence and may take no further action.
If there is other evidence e.g. CCTV, photographs of injuries to you, distressed 999 call they could decide to proceed and charge him.
I'd ring the Police again and just check they know you wish to retract and explain your reasons. They will want to make sure you aren't under any pressure to retract and that you will be safe.
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