Graham provides strategic, economic, financial and management advice. He was Secretary to the New Zealand Treasury from 1986 to 1993 and a key figure in advising on far-reaching economic and public management reforms. Graham has since worked in 40 countries, at all stages of development.

Graham Chaired the New Zealand Health Funding Authority and the New Zealand Electricity Market. In 1994 he was a Visiting Scholar at the International Monetary Fund.