Grant is the Head of Protective Security and Chief Security Officer of Sydney Water, the largest water utility in the Southern Hemisphere. He has a background in corporate security, internal audit, investigation management and intelligence having worked for a range of government and private sector organisations in various roles and capacities. In the course of his long working life, he has dealt constructively with security regulators in over twenty countries and developed a strong interest in the linkage between critical infrastructure security and national security / resilience.