Rosehanna is a senior executive leader, with a distinguished career at the heart of the UK Government, where she shaped national policy and directed large-scale operations in national security, resilience and public policy. Rosehanna has advised Prime Ministers, Cabinet Ministers, and senior boards on risk, resilience, and security. She is a Visiting Professor at Imperial College London, an Emeritus Governor of the LSE, and a Cambridge University Science and Policy Fellow, where she also serves on the Fellowship assessment panel. She sits on the Advisory Board of the Crisis Response Journal, and is a Fellow of both the Business Continuity Institute and the Institute of Strategic Risk Management.