The idea of a “labour aristocracy” pervades writing about the British working class of the second half, and especially the third quarter of the nineteenth century. This emphasis is, in my view, correct: the behaviour and consciousness of working people cannot be explained without some such concept of divisions within the working class. But this proposition has too often been allowed to conclude, rather than to commence the enquiry. The fragmentation of the manual working class into different strata and sub-cultures may take several forms, and is bound to have local and industrial variations. In approaching the problem it is necessary to draw a clear distinction between differences in the class situation of various groups of workers, and the formation of separate working class strata – a cultural and political process. Three main levels of analysis are relevant to this problem: the stratification within the working class, in terms of class situations (relative earnings, security, prospects and opportunities, position of subordination or autonomy in the workplace, and so on); the extent to which various strata of manual workers were distinguished by the cultivation of particular styles of life, and by commitment to particular sets of norms and values; and the consequences of these for institutions embodying the interest of manual workers as a class (unions, parties, etc.) and for the patterning of conflict and consensus in the society.