Facts The Performing Right Society (PRS) Limited issued proceedings against Qatar Airways Group QCSC for global copyright infringement concerning the use of PRS's repertoire works in Qatar Airways' in-flight entertainment system, including two associated apps.(1) PRS claimed that the inclusion of its repertoire works in Qatar Airways' in-flight entertainment system involved two acts which required PRS's licence as the copyright owner – namely: public performance; and communication to the public. With respect to UK law, PRS relied on Sections 19 and 20 of the Copyright, Designs and Patents Act 1988. It sought injunctive relief to restrain such infringement and damages. Procedure Given the global nature of the dispute, the parties considered how to address the foreign law aspects of the claim in a proportionate manner. With that in mind, and in advance of the case and costs management hearing, the parties agreed that there should be a preliminary issues trial at which liability issues under UK and Qatari copyright law would be determined. The key issue at the case and costs management hearing was the scope of disclosure for the preliminary issues trial. PRS contended that Qatar Airways should give extended disclosure under Practice Direction (PD) 51U (to which the proceedings were subject) in relation to certain issues. Qatar Airways contended that there should be no disclosure.