This work investigates the structural and cultural transformations of the British working class during the century between 1840 and 1940. Andrew Miles and Mike Savage utilize a combination of quantitative social data and qualitative historical analysis to challenge traditional narratives regarding class formation. They argue that the working class was not a static entity but a dynamic social construct shaped by shifting economic conditions, urban development, and evolving political identities. By examining longitudinal data, the authors provide a framework for understanding how class boundaries were negotiated and maintained throughout the industrial era.

Historians and sociologists frequently cite this text as a significant contribution to the study of social stratification in Britain. Scholars often note the authors' rigorous use of empirical data to refine long-standing debates regarding the evolution of the British labor force.