Professor Sir Chris Llewellyn Smith FRS is a theoretical physicist. He is currently Director of Energy Research, Oxford University, and President of the Council of SESAME (Synchrotron-light for Experimental Science and its Applications in the Middle East). He has served as Chairman of the Council of ITER (2007-09) and of the Consultative Committee for Euratom on Fusion (2004-09), and was Director of UKAEA Culham (2003-2008), with responsibility for the UK’s fusion programme and for operation of the Joint European Torus (JET). While at Culham he developed and promoted the ‘Fast Track’ development of fusion energy. He was Provost and President of University College London (1999-2002), Director General of CERN (1994-1998), and Chairman of Oxford Physics (1987-1992). During his mandate as DG of CERN the Large Hadron Collider (LHC) was approved and construction started. After completing his Doctorate in Oxford in 1967, he worked briefly in the Physical Institute of the Academy of Sciences in Moscow, before spending periods at CERN and the Stanford Linear Accelerator Center, after which he returned to Oxford in 1984. Chris Llewellyn Smith has written and spoken widely on science funding, international scientific collaboration and energy issues. He has served on many advisory bodies nationally and internationally, including the UK Prime Minister’s Advisory Council on Science and Technology (1989-92). His scientific contributions and leadership have been recognised by awards and honours in seven countries on three continents.