Mr Harding has been Chairman of Downer EDI Limited since November 2010, having previously been a non-executive director from July 2008 and Deputy Chairman from July 2010. He has been Chairman of Roc Oil Company Ltd since December 2013, having previously been a non-executive director from June 2012. He has been Non-executive director of Transpacific Industries Group Ltd since March 2013. He was Independent non-executive Chairman of Clough Limited, Non-executive Deputy Chairman of Arc Energy Ltd, Chairman of the Ministry of Defence Project Governance Board - Land Systems Division. He wasPresident and General Manager of BP Developments Australia Ltd with over 25 years of international experience with BP. Former Vice-Chairman and Council member of the Australian Petroleum Production and Exploration Association (APPEA).