This article contributes to the recent transnational turn in labour history with a case study of West German and British trade union politics at Ford between 1967 and 1973. It. demonstrates that international economic interdependence became a major concern for organised labour ill both countries because of the emergence in 1967 of the Ford of Europe holding company Paradoxically, however, this was accompanied by the accentuation of national allegiances and action frameworks, in particular with regard to the framing of labour market interests and industrial relations policies. These processes played out differently in the two countries, not only because national contexts were different but also because the new international challenges interacted with national contexts ill specific ways.