Mervyn D Shannon received his B. Sc. in Physics in 1974 and his PhD on Electron Diffraction Studies and Applications to Rutile Catalysts in 1979 both from the University of Bristol. From 1974 until 2007 he worked for Imperial Chemical Industries rising to Science and Technology Specialist/Business Scientist concentrating on structure/property characterization of materials by electron microscopy and various diffraction methods. From 1979 to 1994 much of his work related to zeolites, and five structures were solved using combinations of electron diffraction, electron microscopy, model building and simulation of powder XRD patterns for ordered and disordered structures. From 2007 to 2009 he worked in the same role for Intertek after their purchase of the ICI Measurement Science Group before leaving to become Director of the EPSRC’s SuperSTEM UK Facility for aberration-corrected Scanning TEM at Daresbury from 1999 until 2005. During this time his studies of zeolites resumed in conjunction with Johnson Matthey. After stepping down from this role he became a part-time Research Associate with JM. He is also a part-time Research Fellow at the University of Portsmouth and a Visiting Professor at the University of Liverpool. His current work is focused on structural modelling of (disordered) zeolites.