The work that can be so far summarised is concerned with five main questions. First, what are the extent and nature of the waste of human resources implicit in the existence of differences between regions in the labour market, widely interpreted? Secondly, what are the extent and nature of inter-regional differences of real income? Thirdly, what is the nature of the differences between growth-rates of industrial employment in different regions? Fourthly, what is the general pattern of inter-regional movement of population and of job opportunities and (very tentatively) is there any sign that regional population growth is part of a self-reinforcing process? And, finally, what can be said about the effects of government policy on the distribution of industry and employment in recent years?