In Sabbagh v Khoury and others,  EWCA Civ 1219 (available here), the English Court of Appeal partly upheld the injunction granted by the Commercial Court restraining the pursuit of arbitration proceedings seated in Lebanon. In doing so, the Court of Appeal confirmed the power of English courts to restrain a foreign arbitration on grounds that the foreign arbitration is oppressive and vexatious and provided helpful guidance on the exceptional circumstances in which English courts may exercise this power.
In the most recent decision in the Sabbagh family feud, Sabbagh v Khoury & Ors  EWHC 1330 (Comm), the English Commercial Court ordered the stay of parallel Lebanon-seated arbitration proceedings. This was despite the tribunal in that case having found that it had jurisdiction to hear it. In granting the interim injunction to restrain the pursuit of the arbitration proceedings, Mr Justice Knowles was quick to acknowledge the significance of a court that is not the supervisory court granting an injunction to prevent parties prosecuting a foreign arbitration.