Arbitration analysis: The Commercial Court upheld a section 67 challenge under the Arbitration Act 1996 (AA 1996) and set aside an ICC tribunal’s partial award on jurisdiction. Bryan J held that the tribunal had impermissibly adopted a ‘pick and mix’ approach to conflicting arbitration clauses in a suite of contractual documents, wrongly overriding the agreed order of precedence. The case is a rare example of a successful jurisdictional challenge and reinforces the limits of arbitral discretion when construing composite contracts. The judgment also clarifies the approach under AA 1996, s 73, holding that a party will not lose its right to object to jurisdiction where timely and consistent protest is maintained. Finally, the court refused relief from sanctions for late acknowledgment of service—emphasising the seriousness of procedural defaults in arbitration claims, though the defendant was permitted to participate de bene esse. This is a valuable judgment for practitioners navigating jurisdictional objections in composite contract settings and reinforces the English courts’ commitment to procedural discipline in arbitration claims. Written by Can Yeğinsu, barrister at 3 Verulam Buildings.