Professor Mike Payne holds the Chair of Computational Physics in the University of Cambridge. He has worked on first principles total energy calculations since 1985, is the author of the first principles total energy pseudopotential code CASTEP and has been involved in the development of the linear scaling code ONETEP and the LOTF (Learn-On-The-Fly) hybrid modelling scheme.  He was the 23rd most highly cited Physical Scientist in the UK between 1990 and 1999 – 2,869 citations (Institute for Scientific Information). He has published more than 280 papers which have had over 35,000 citations and his CASTEP software package has cumulative sales of $40million