Jurisdiction – Challenge. The master had correctly refused the claimant an extension of time to serve the claim form and particulars of claim in his libel proceedings, to extend time for the defendants' CPR Pt 11 application challenging jurisdiction and to impose a permanent stay on proceedings. However, the Queen's Bench Division, in dismissing the claimant's appeal, held that the master had been wrong to find that the application to set aside service of the claim form could be made pursuant to CPR 3.4.