Frank Close is Professor of Physics at the Theoretical Physics Department, Oxford University. He gained a DPhil at Oxford University, and has worked at Stanford Linear Accelerator Center (SLAC), CERN, and the Rutherford Appleton Laboratory. Professor Close has been awarded the Kelvin Medal from the Institute of Physics and is the author of many books aimed at both a professional and a lay audience. Sandy Donnachie is Honorary Research Professor in the School of Physics and Astronomy at the University of Manchester. Since gaining his PhD from the University of Glasgow, Professor Donnachie has held positions at the University College London, CERN, the University of Glasgow and Daresbury National Laboratory. He was awarded the Glazebrook Medal from the Institute of Physics and was co-author of Pomeron Physics and QCD (Cambridge University Press 2002). Graham Shaw is a Senior Lecturer in the School of Physics and Astronomy at the University of Manchester. He gained his PhD from the University of London. He has held positions at the Rutherford Laboratory, Daresbury National Laboratory and Columbia University. His many books include the well-known texts on Quantum Field Theory and Particle Physics (Wiley, latest editions 1993 and 1997).