This Practice Note identifies when it might be appropriate to make an application for pre-action disclosure under CPR 31.16. It also explains, by reference to key authorities, the two-stage approach the courts take when deciding whether to make such an order under CPR 31.16(3): (1) does it have jurisdiction, ie the four conditions under CPR 31.16(3)(a), CPR 31.16(3)(b), CPR 31.16(3)(c) and CPR 31.16(3)(d) have been met and, if so, (2) should it exercise its discretion to make the order. It also considers disclosure before proceedings have started in the context of split trials, the court’s jurisdiction to order pre-action disclosure once a claim form has been issued, pre-action disclosure where the dispute will be resolved through arbitration and pre-action disclosure in procurement cases. This Practice Note should be read in conjunction with Practice Notes: Pre-action disclosure—making an application and Pre-action disclosure—key considerations and cases. The court’s power to order pre-action disclosure The courts’ power to order disclosure before proceedings have started, ie ‘pre-action disclosure’, will depend on the court in which the application is