This book, originally published in 1982, review the resurrection of the small firm, partly by a multi-disciplined examination of the existing literature on small and new firms and partly by reporting the results of a study of firms new (in the early 1980s) to the North East of England. Part 1 deals with the role of small firms as sources of potential or actual competition, and their role in research and innovation. In Part 2 the theoretical foundations for the study of entrepreneurs and their new firms are laid, using concepts from a cross-section of the social sciences. Part 3 tests some of the theories outlined in Part 2 and reviews the problems which the entrepreneurs faced in starting and developing their business and the impact which such businesses had upon the local economy. Part 4 reviews the lessons of the preceding parts in the context of the regional and national economy of the UK.