“(1) This rule applies where an application is made to the court under any Act for disclosure by a person who is not a party to the proceedings. (2) The application must be supported by evidence. (3) The court may make an order under this rule only where – (a) the documents of which disclosure is sought are likely to support the case of the applicant or adversely affect the case of one of the other parties to the proceedings; and (b) the disclosure is necessary in order to dispose fairly of the claim or to save costs.” (a) the documents of which disclosure is sought are likely to support the case of the applicant or adversely affect the case of one of the other parties to the proceedings; and (b) the disclosure is necessary in order to dispose fairly of the claim or to save costs.”
“It seems to me that, notwithstanding the provision as to costs, the jurisdiction to make an order against a non-party must be exercised with some caution. There is no doubt that an order in respect of specific documents presents no difficulties. However, in respect of a request for a class of documents it seems to me that notwithstanding the provision which I have read relating to the costs of the application and of compliance with any order made pursuant to it, it is none the less necessary to be satisfied that there are documents falling within the classes which are specified and those documents are – not may be – documents in relation to which disclosure will support the case of the applicant or adversely affect the case of one of the other parties to the proceedings.”
“In particular, the threshold condition cannot be circumvented by an order which puts upon the non-party the task of identifying those documents within a composite class which do, and those which do not, meet the condition: see Wakefield v Outhwaite[1990] 2 Lloyd’s Rep 157 , 163-164 and Panayiotou v Sony Music Entertainment (UK) Ltd[1994] Ch 142 , 151F.”