I am a Senior Staff Research Scientist and the Open-Endedness Team Lead at Google DeepMind. I am also a Professor of Artificial Intelligence at the Centre for Artificial Intelligence in the Department of Computer Science at University College London (UCL) where I am PI of the UCL Deciding, Acting, and Reasoning with Knowledge (DARK) Lab, and a Scholar of the European Laboratory for Learning and Intelligent Systems (ELLIS). Before, I was a Manager, Research Scientist, and Area Lead at Meta AI (FAIR), a Postdoctoral Researcher in Reinforcement Learning at the Whiteson Research Lab at the University of Oxford, a Junior Research Fellow in Computer Science at Jesus College, and a Stipendiary Lecturer in Computer Science at Hertford College. I obtained my Ph.D. from UCL under the supervision of Sebastian Riedel, where I was awarded a Microsoft Research Ph.D. Scholarship in 2013 and a Google Ph.D. Fellowship in 2017. My work focuses on Reinforcement Learning and Open-Endedness.