Siobhan Moriarty

Siobhán Moriarty

General Counsel & Company Secretary, Diageo


Siobhán Moriarty is General Counsel at Diageo. Siobhán held various positions in law firm private practice in Dublin and London, principally 7 years as a corporate lawyer with Clifford Chance, before joining Diageo’s in-house legal team in 1997. Siobhán has done a variety of roles in Diageo and has been a member of the Executive Committee of Diageo plc since 2013. Siobhán is also the joint Executive Committee sponsor of Diageo’s diversity and inclusion agenda, which has set itself the goal of achieving 35% female leadership in Diageo by 2020 and 40% by 2025.


Siobhán was recognised for breaking boundaries in the law in the Financial Times list of top 20 global general counsel as part of the 2017 FT Global GC 20 list. In addition, Siobhán was named as one of the top 50 female champions in the inaugural 2017 FT and HERoes Champions of Women in Business list, recognised for helping to address the gender imbalance in business, “celebrating not just those who have achieved significant success in their own careers, but also those elevating others during their rise through the ranks. Real change makers, who can be looked up to as pioneers of equality and inclusion.