John is currently Clerk Maxwell Professor of Theoretical Physics at King’s College, University of London. His primary research concerns particle physics beyond the Standard Model, but he is also stray into related areas of high-energy astrophysics and cosmology.

John earned his PhD from King’s College, Cambridge, in theoretical (high-energy) particle physics in 1971. After brief post-doc positions at SLAC and Caltech, he joined to CERN in 1978. He was awarded the Maxwell Medal and the Paul Dirac Prize by the Institute of Physics in 1982 and 2005 respectively, and is an Elected Fellow of the Royal Society of London since 1985. He was awarded an Honorary Doctorate from the University of Southampton, and twice won the First Award in the Gravity Research Foundation essay competition.
Specific research topics include the Higgs boson (or whatever replaces it), searches for it at CERN’s LHC, and its possible connections with matter-antimatter asymmetry and the generation of matter in the Universe. Much of his research concerns supersymmetry and he has been working actively on searches for supersymmetric particles at the LHC and as astrophysical dark matter. He is also interested in models of quantum gravity and in the quest of possible experimental probes of such models, either in accelerator experiments or in high-energy astrophysics and cosmology