This chapter examines the politics and the practice of partnership in the urban renewal era. This public-private dynamic was the central political relationship which drove urban transformation; it was codified and mandated explicitly within planning legislation and central policy diktats and pursued energetically by many individual local authorities eager to remake the image and economy of their towns. I show how this hybrid, mixed economy of planning was situated within the wider political economy of post-war Britain, tracking the political influence and connections of the property and construction sectors as well as the attitudes and policy positions of both the Conservative and Labour Parties. I also trace the operation and impact of partnership-based urban renewal on the ground in various cities, focusing in particular on Manchester, Liverpool and Nottingham. Local authorities had a range of motivations for working with the commercial development sector and their experiences were not uniform. The chapter shows that some cities managed to navigate the new terrain of public-private developmentalism more successfully than others, but I also stress the basic asymmetries involved in these relationships, particularly for those places that were struggling most economically.