Sorry, that's not the case. If the authorities become aware of a possible crime being committed, they're legally bound to act. There's been over 10 years of very public accusations leveled at City, with thousands of pages of supposed evidence. The authorities can't failed to have noticed this, so where are they?
They won't act on a non-statutory bodies findings. If they become aware a criminal act may have taken place, they'll acquire the assembled evidence & conduct their own investigation, & proceed (or not) based on their findings.
Imagine the legal & political shitshow if the authorities failed to act on a publicly alleged crime (corporate fraud, money laundering, tax evasion etc) because they were waiting on the conclusion of a non-statutory body's tribunal? The law doesn't work like that.
There doesn't need to be a formal reporting of an alleged crime for the authorities to act either. They just need to be made aware that a crime may have been committed to trigger an investigation by first asking for, or acquiring a court warrant to seize the claimed evidence of the criminal act.
Those claiming this isn't the legal reality of UK law, really have no clue how statutory bodies or UK Law works. They only have to conduct a quick Google search if they continue to be ignorant of these facts after so many years.
Again just like
@Prestwich_Blue once I stepped back & took a global overview of FFP, PSR & APT, it all became crystal clear to me. The PL's private club "rules" have zero standing in UK Law, hence why I suggest at worst City maybe found guilty of non-compliance. So following the CAS example, it may or may not follow with a heavy fine on that basis only.