John has experience advising both governments and the private sector in relation to Energy and Natural Resources, Fraud and Dispute resolution generally. He has represented a number of governments including Brunei, Tanzania, Nigeria, Ethiopia, Egypt, Sudan and Uganda and State corporations from India and China in both arbitration and litigation.

He has acted as a commercial arbitrator and as an expert under expert determination provisions. He has trained government officials from Somalia and Ethiopia in capacity building programmes and worked for the World Bank, making a diagnostic review of Lesothan legal systems. 

He ran the Denton Hall offices in Beijing (1989-98) and Cairo (1998-2001) and was a director of the ASX listed gold mining company Artemis Resources between 2006 and 2010.

In the context of arbitration he has appeared as a lawyer before Tribunals of the ICC in London and Paris, Tribunals of LMAA, LCIA, FOSFA and ad hoc in London and Tribunals in Stockholm, Dar-es-Salaam, Zurich and Geneva. He has appeared as a witness of fact before a Tribunal in Oslo and as an expert witness before a Tribunal in Rotterdam and a court in Rome.