You haven't had much experience of divorce cases, tgm! This is very small beer.Your friend's solicitor issues , probably already has issued, a detailed enquiry about the wife's expenses, income, assets, investments, bank accounts,potential future income, support from other sources, interests (whether held by nominees and in this country or not)...it can go on forever. It's adapted to the requirements of each case but is still demanding.Such an enquiry is always made when matrimonial property and finances are considered. How else are the two sides and the court to know what is involved ?
Your friend should show the documents to his solicitor, so questions can be asked.Fraud,? Be realistic. It's a divorce. Your friend wants a proper settlement. The court can achieve that for him. Perjury about property etc (non-disclosure of income , lying about assets and so forth ) is a serious matter.The judge will deal with it.In an extreme case the judge may refer the case to the CPS but that's rare. The judge is more likely to decide far more favourably for the other party and disbelieve most of what the false party says on other things too...