Arbitration analysis: In Petroleum Exploration (PVT) Ltd v Frontier Holdings Ltd and another , the Commercial Court dismissed a section 67 challenge to a partial final award (the Award) in a London-seated ICC arbitration. The Award was made pursuant to an arbitration clause in a 2016 settlement agreement between Petroleum Exploration (PVT) Limited (PEL), Frontier Holdings Ltd (FHL), and Spud Energy Pty Ltd (Spud) (the Settlement Agreement). In the Award, the arbitrator had granted declaratory and monetary relief against PEL in relation to its forfeiture of FHL’s ‘working interests’ in certain oil and gas blocks in Pakistan (the Oil and Gas Blocks). In the section 67 challenge before the Commercial Court, PEL argued that only an arbitral tribunal appointed under earlier agreements between the parties had jurisdiction to make certain of the orders in favour of FHL under the Award. Applying well-established principles of contractual construction and the Fiona Trust presumption (addressed below), His Honour Judge Pelling KC dismissed PEL's challenge to the Award. The judge held that the broadly worded arbitration clause in the Settlement Agreement was intended to provide a ‘one‑stop’ forum for all disputes arising out of that agreement. Clear language would be required to displace that presumption, and there was none. Written by Ana Margetts, associate, and Shai Wade, head of International Arbitration, at RPC.