Hannah Lily is a British lawyer with 25 years of professional experience, and an expert in the regulation of deep seabed mining. Since 2011, she has advised over 50 governments on seabed minerals policy and legal frameworks, including drafting national legislation and model laws. She has served as legal adviser to the Secretariat of the Pacific Community, the Commonwealth Secretariat, and the UK Government. She now works as an independent consultant to the public sector, and nonprofit organisations. She has been a regular participant at the International Seabed Authority for more than a decade, supporting many delegations in the negotiations. She has published numerous peer-reviewed articles on the complex legal architecture governing deep seabed mining, and serves on the advisory board of the Deep Ocean Stewardship Initiative (a science-policy network focused on the sustainable management of the deep ocean).