The incidence of industrial conflict and the nature of workplace industrial relations have occupied a central place in public and academic commentary on British society. Debate about the role of the trade unions in the state, the degree of authority that the unions can and should exercise over their members, the desirability of a legal framework for collective agreements, the nature of rank and file militancy and the means and techniques of re-establishing employers' authority over the work in the face of an expanded workers' frontier of control all lie at the heart of the social crisis that marked British society from the end of the 1960s.