The only case in a law library I can find on a case such as this is:
Abstract: The appellant mother (M) appealed against an injunction forbidding her from disclosing to third parties that the respondent father (F) had lied in proceedings concerning financial support for their son. F had not disclosed that he had sold an enterprise owned by him and had received £111,000. M wanted to disclose to the police, Crown Prosecution Service and the Financial Conduct Authority that F, who worked in the financial services sector, lied in statements and on oath in the proceedings. However, the district judge in those proceedings decided that it was not in the interest of the parties or their son for documents to be disclosed to the police in circumstances where there was no investigation which was being undertaken to which those documents would be relevant. M submitted that there was a public interest in the prosecution of crime, whether perjury or perverting the course of justice, and in the Financial Conduct Authority being made aware of F's capacity to lie in his own interests, since he was in a position of responsibility holding investors' funds.
Appeal dismissed.
( Y v Z sch 1 publiciity ) 2014
and as you have been repeatedly told, the judge said in this case, it would not be in the public interest to proceed.
well - you wanted a technical answer from Joe Public and so here is one.