Guy is a Fellow of the Australian Society of Certified Practicing Accountants (FCPA) and Chartered Governance Institute (FCG); a Member of the Institute of Directors UK and the Australian Institute of Company Directors (AICD) and a past Trinity student (OTG 1978). Guy has a 36-year international career with Shell and is currently serving as Chair of the Brisbane, Queensland based clean tech company, Graphene Manufacturing Group Ltd (GMG:TSXV), Advisory Board Chair of Delft IMP B.V. Non-Executive Director of Seawind Ocean Technology Holding B.V. and a Senior Advisor to the Boston Consulting Group (BCG).