Lionel is an Australian solicitor (2008) and English barrister (2013) specialising in international commercial litigation and arbitration, public international law and human rights.
He has experience advising sovereign States, corporations and individuals under all of the major institutional rules, including ICSID, ICC, LCIA, UNCITRAL and CIArb. He often appears as advocate in these arbitrations, as well as before the English courts, where he has acted as a member of the counsel team, sole junior to a leader, sole counsel and as counsel leading junior counsel. In this capacity he has worked on cases heard by the Supreme Court, the Privy Council, the Court of Appeal, the High Court, the European Court of Human Rights, the Special Court for Sierra Leone and the International Criminal Tribunal for the former Yugoslavia.
Lionel has previously worked as a self-employed barrister, as an employed barrister in the international arbitration team of a leading international law firm, as the senior researcher to Geoffrey Robertson QC, and as the Global Justice Research Fellow at the University of Oxford.
An accomplished academic, he is the author of The International Criminal Court and the End of Impunity in Kenya, and he is currently working on another monograph in international law. Lionel holds two undergraduate degrees (each with first class honours), three masters degrees and a doctorate in international law, the latter degrees from the University of Oxford where he studied as a Rhodes scholar.