People
Members have a substantive continuing research relationship in which the lab is one of their research homes. Associates have a continuing formal or substantial relationship with the lab, with their primary research home elsewhere.
Christian Schroeder de Witt
Associate Professor, University of Oxford. Incoming Associate Professor of AI and Information Security, UCL Computer Science and UCL AI Centre, from October 2026
Christian founded Witt Lab and defined the field of multi-agent security: the security of systems whose parties are learned agents that reason, communicate and pursue their own objectives, and how threats such as secret collusion, illusory attacks and unelicitable backdoors can be understood and prevented by design. He leads both of the lab's strands: multi-agent security, and the reasoning and multi-agent capabilities required to test it. He holds an EPSRC Open Fellowship, a Royal Academy of Engineering Research Fellowship and a Schmidt Sciences AI2050 Early Career Fellowship. He joins UCL in October 2026 from the University of Oxford, where he is Associate Professor and founded the lab in the Department of Engineering Science.
His earlier work includes the multi-agent reinforcement learning line of QMIX and the StarCraft Multi-Agent Challenge, and perfectly secure steganography, which resolved a problem open for 25 years and was named one of Quanta Magazine's biggest discoveries of the year.
He holds a DPhil in Engineering Science from Oxford, supervised by Philip Torr and Shimon Whiteson, on communication and coordination in deep multi-agent reinforcement learning. He has been a visiting researcher at Mila with Yoshua Bengio and at Lawrence Livermore National Laboratory, a UK Intelligence Community Research Fellow, and Stipendiary Lecturer in Computer Science at St Catherine’s College, Oxford. He designed and lectures Superintelligence: What do we actually know? at the Oxford AIMS CDT, lead-organised the Multi-Agent Security workshops at NeurIPS 2023 and DAI 2025, and is an Area Chair for NeurIPS 2026.
Lab members
A substantive continuing research relationship in which the lab is one of their research homes.
Postdoctoral fellow
Postdoctoral fellow (PDRA). University of Oxford and UCL
PhD in Economics from New York University. Uses deep and reinforcement learning to model and predict how agents behave in socioeconomic settings; co-first author of Bayesian Exploration Networks (ICML 2024).
PhD students
Associates
A continuing formal or substantial relationship with the lab, with a primary research home elsewhere.
Faculty
Research fellows and senior researchers
PhD students
Master's students
Undergraduates
