The CPS can’t go round prosecuting its principal witnesses just because the crown can’t prove its case. It doesn’t mean the report is false.
The chief rape defence is reasonable belief in consent - so even if the jury believes the complainant did not consent, if they also believe the defendant believed they had consent they have to find them not guilty.
The point at which the CPS prosecute people for making a false allegation is as a result of the police investigation not after the trial.
If cast iron evidence was sprung by the defence at trial that an allegation was intentionally false, might the CPS prosecute the complainant - it’s possible I guess but I don’t know if its ever happened.
The rules around disclosure are designed to prevent such a circumstance.
Defendants have the right to know the evidence in their favour as well as against them. And there is also a duty of disclosure of the defence, so that in certain circumstances defendants are required to notify the prosecution their defence to a charge in addition to notifying the prosecution of the witnesses they intend to rely on in the trial.
Investigating bodies have access to the material that demonstrates guilt, but may also have access to the material which demonstrates innocence.
Cases do collapse over disclosure failures - ie key pieces of evidence that undermine the entire case.
Technically yes they have that right, but if someone’s gotten a not guilty in a criminal trial, it does significantly affect the chances of winning against them in a similar civil trial regarding the same events. And to lose in civil court is prohibitively expensive, so not many will choose to launch a civil case after losing in criminal court.
it doesn’t really work like that - a civil case would be for damages. A criminal conviction could serve as evidence to prove that the attacker is responsible for your damages but you may still be able to win your civil case even if they had been found not guilty. In the cases of Stephen Coxen, Sean Diamond - damages were awarded in spite of their ‘not proven’ verdicts (they were in Scotland).