“…The perspective it takes is necessarily abstract -at the level of the economy or the city -but if considered instead from the perspective of individual businesses, for the cluster they are situated in, the local people who are employed there, the residents who access their goods and services, or the identity of the area (relevant also to wider city 'users'), then commercial gentrification can more readily be seen as a problem. Importantly, it ignores the scale and pace of change and the money to be made as a consequence of the 'rent-gap' , which means that businesses are not being upgraded gradually as industries go into decline, rather there is evidence in post-industrial global cities such as London and New York of what Rast (2001) called 'manufacturing urban decline' , in which the public sector plays a role. The remainder of this article draws on this insight to evaluate the motivations of local authorities in London in negotiating affordable workspace in mixed-use redevelopments and the impacts of such intervention.…”