The 1960s was a period of rapid change in the construction labour process, whose increased mechanization and complexity represented a challenge to traditional wage systems and forms of organization. Such changes were nowhere more evident than on the Barbican redevelopment site in London, whose construction exposed the contradictions in industrial relations and clarified demands for improved conditions for building workers which resonated throughout London and the country. The paper addresses the complex reasons for and the significance of the bitter disputes on the Barbican from 1965 to 1967. It is set in the context of a construction industry in the process of rapid change through the use of new technologies and the emergence of new or non...