IntroductionIt is a commonplace of both political and academic argument that the last quarter of twentieth century saw major diminution of national economic policy autonomy, with increased capital mobility identified as the key explanatory variable. Despite such qualification regarding capital mobility impact, the idea of 1970s as a watershed for national policy autonomy is still pervasive. 9 This article looks at how that credibility is constructed in the contemporary period (1997)(1998)(1999)(2000)(2001)(2002)(2003), and goes on to analyse the degree of enduring fiscal policy autonomy in two cases -Britain and