Arbitration analysis: The Court of Appeal allowed only one out of three appeals and dismissed the remaining challenges to an investment treaty award that were brought pursuant to sections 67 and 68 of the Arbitration Act 1996 (AA 1996). The Court of Appeal set aside the award in favour of one of the parties because it concluded that the party in question did not qualify as an ‘investor’ under the relevant bilateral investment treaty (BIT). It also dismissed the respondents’ arguments that the challenges brought by the appellant were precluded by AA 1996, s 73, alternatively that they were not (with one exception) jurisdictional in nature within the meaning of AA 1996, s 31 so as to amount to legitimate grounds of challenge under AA 1996, s 67. Ultimately, however, the Court of Appeal dismissed all the appellant’s challenges. Written by Iain Sharp, partner, and Reema Shour, senior knowledge lawyer, at Hill Dickinson LLP.