2006 Professor Michael Kelly FRS for his work in the fundamental physics of electron transport and the creation of practical electronic devices which can be deployed in advanced systems.
2005 Professor Keith Moffatt FRS , for his contributions to the understanding of magnetohydrodynamics, especially to the mechanisms determining how magnetic fields can develop from a low background level to substantial amplitude.
2004 Professor John Clarke FRS, for his outstanding research, leading the world in the invention, building and development of innovative new Superconducting QUantum Interference Devices (SQUID), in their theory and in their application to a plethora of fundamental problems and their investigative tools.
2003 Professor Peter Edwards FRS, for his distinguished work as a solid state chemist. He has made seminal contributions to fields including superconductivity and the behaviour of metal nanoparticles, and has greatly advanced our understanding of the phenomenology of the metal-insulator transition.
2002 Alexander Dalgarno, for his contributions to the theory of atomic and molecular process, and in particular its application to astrophysics. His studies of energy depositions provide the key to understanding emissions from terrestrial aurorae, planetary atmospheres and comets.
2001 John Bernard Pethica, for his contributions to the field of nanometre and atomic scale mechanics. He invented and developed the technique of nanoindentation thereby revolutionising the mechanical characterisation of ultra-small volumes of materials. This has had a major influence on those industries concerned with thin film and coating technologies.
2000 Chintamani Nagesa Ramachandra Rao, for his contributions to the field of materials chemistry, in particular, in relation to studies of the electronic and magnetic properties of transition metal oxides and high temperature superconductors. His work has been an inspiration to a generation of Indian scientists.
1999 Alexander Boksenberg, for his landmark discoveries concerning the nature of active galactic nuclei, the physics of the intergalactic medium and of the interstellar gas in primordial galaxies. He is noted also for his exceptional contributions to the development of astronomical instrumentation including the Image Photon Counting System, a revolutionary electronic area detector for the detection of faint sources, which gave a major impetus to optical astronomy in the United Kingdom.
1998 Raymond Hide, for his distinguished experimental and theoretical investigations of the hydrodynamics of rotating fluids and the application of such basic studies to the understanding of motions in the atmosphere and interiors of the major planets.
1997 Andrew Richard Lang, for his fundamental work on X-ray diffraction physics and for his developments of the techniques of X-ray topography, in particular in studying defects in crystal structures.
1996 AD Buckingham, for his contributions to chemical physics, in particular to long-range intermolecular forces, non-linear optics, problems related to the polarizability of the helium atom, the interpretation of NMR spectra, and the applications of ab initio computations.
1995 D Shoenberg, for his work on the electronic structure of solids, in particular by exploiting low temperature techniques, particularly the De Haas Van Alphen effect, defining the Fermi surface of many metals.
1994 RG Chambers, for his many contributions to solid-state physics, in particular his ingenious and technically demanding experiment which verified the Ahoronov-Bohm effect concerning the behaviour of charged particles in magnetic fields.
1993 GR Isaak, for his pioneering use of resonant scattering techniques to make extremely precise measures of Doppler velocity shifts in the solar photosphere.
1992 MJ Seaton, for his theoretical research in atomic physics and leadership of the Opacity Project.
1991 PB Moon, for his contributions in three main areas of science - nuclear physics, the discovery of gamma-ray resonances, and the use of colliding molecular beams to study chemical reactions.
1990 Thomas George Cowling, for his fundamental contributions to theoretical astrophysics including seminal theoretical studies of the role of electromagnetic induction in cosmic systems.