Despite many changes to society, education, and the labor market, social class remains a fundamental force in British life in the twenty-first century. Yet we have lacked any compelling Marxist analysis of class in Britain today—until now. Charles Umney here moves Marx from the mills and mines that drove his analysis in his era into our own, with its call centers, office blocks, and fast food chains. Showing how Marxist concepts remain powerfully explanatory, Umney argues that understanding them is vital to fights against pay inequality, decreasing job security, and managerial control of the labor process. Class, Umney shows, must be understood as a dynamic and exploitative process integral to capitalism, rather than as a simple descriptive category, if we are going to better understand why capital continues to gain at the expense of labor.