Catherine Duggan is Head of Sustainability at Grant Thornton, where she leads the firm’s work in helping clients navigate sustainability compliance and embed ESG into business strategy. With a PhD in geology and a professional background in the oil and gas sector, Catherine brings a practical and pragmatic approach to sustainability, meeting clients where they are and guiding them through complex regulatory requirements including CSRD, EU Taxonomy, and TCFD. She is a recognised thought leader in sustainable business transformation and regularly contributes to industry dialogue on sustainability integration, risk, and resilience.