ABSTRACT:This article examines the impact of post-war urban renewal on industry and economic activity in Manchester and Leeds. It demonstrates that local redevelopment plans contained important economic underpinnings which have been largely overlooked in the literature, and particularly highlights expansive plans for industrial reorganization and relocation. The article also shows that, in practice, urban renewal had a destabilizing and destructive impact on established industrial activities and exacerbated the inner-city problems of unemployment and disinvestment which preoccupied policy-makers by the 1970s. The article argues that post-war planning practices need to be integrated into wider histories of deindustrialization in British cities.