The author was born at the height of the Manchester blitz. During his apprenticeship he won a scholarship to study Engineering, and later gained a PhD. Having joined the University of Manchester from industry, his department always achieved the highest possible research rating, and helped win the Queen's Anniversary Prize, presented at Buckingham Palace. Professor Leonard is author of over two hundred wide-ranging scientific papers, which include a technique now used to safeguard the ozone layer, and an expert system for cardio-angioplasty. In 1987, Professor Leonard was awarded the degree of