“23. What does that approach require? First, obligations in relation to disclosure and inspection arise only when the relevance test is satisfied. Relevance can include "train of inquiry" points which are not merely fishing expeditions. This is a matter of fact, degree and proportionality. Secondly, if the relevance test is satisfied, it is for the party or person in possession of the document or who would be adversely affected by its disclosure or inspection to assert exemption from disclosure or inspection. Thirdly, any ensuing dispute falls to be determined ultimately by a balancing exercise, having regard to the fair trial rights of the party seeking disclosure or inspection and the privacy or confidentiality rights of the other party and any person whose rights may require protection. It will generally involve a consideration of competing ECHR rights. Fourthly, the denial of disclosure or inspection is limited to circumstances where such denial is strictly necessary. Fifthly, in some cases the balance may need to be struck by a limited or restricted order which respects a protected interest by such things as redaction, confidentiality rings, anonymity in the proceedings or other such order. Again, the limitation or restriction must satisfy the test of strict necessity.”