Any book written about a subject which is rapidly changing necessarily represents a ‘snapshot’ in time—the author’s attempts to describe the current situation, and to predict what might be the state of things when the book is published. In the case of this book, the speed of change is rapidly increasing as the European Community (EC) nears 31 December 1992, the target date which the Single European Act defines as that by which a Single Market in products should be established.