John Loveday graduated from the University of Bristol where he also took his PhD
in Physics. He moved to the University of Edinburgh in 1987 to carry out post-doctor-al work with Richard Nelmes, and was one of the founder members of the Paris–Edinburgh high-pressure neutron diffraction collaboration. He has specialised in techniques for high-pressure neutron scattering, and their application in studies of structures and transitions in planetary ices, hydrates, water and other simple molecular systems. In 2004, he was appointed a Reader in the School of Physics.