[T]his work, made of six concise but straightforward chapters, offers an engaging argument about the liberal roots of contemporary left thought. It not only narrates a recent history of socialist ideas, but also attempts to show how ideas and political thinkers may have a concrete impact on policies of their time. [It] brings new perspectives to questions that many left thinkers constantly raise, notably when attempting to understand the ambiguous path that many European so-called left governments have taken in recent years. * LSE Review of Books * [A]n important work that shows the challenge but also the great value of genuine intellectual engagement across ideological boundaries. The discussion of the four thinkers' engagement with Hayek provides significant insights into the development of contemporary socialism and social democracy. Although the book is centered on the British experience, it will have value for all those interested in the ideological and empirical political-economic debates of the twentieth century and how they will inform the political economy of the twenty-first century. * The Review of Austrian Economics * This book makes an original and valuable contribution to our understanding of the complex ideological history of the twentieth century. It is well written and manages to combine clear exegesis of the relevant ideas with pointed discussions of the context in which they emerged. [I]t will prove insightful and useful to those interested in the study of political ideologies and in the history of British political thought, as well as to students of Hayek's work. * Contemporary Political Theory * Hayek has long been regarded as the exclusive property of the political right. But as Simon Griffiths shows in this important and insightful study, Hayek also attracted the attention of some on the political left, who used his ideas to rethink some long-standing positions on markets and the role of the state. Griffiths provides a searching critique of this engagement, and asks whether it still has relevance in the aftermath of the 2008 financial crash. He provides a fresh and illuminating perspective on how ideas influence contemporary politics. -- Andrew Gamble, University of Cambridge Simon Griffiths' book illuminatingly and innovatively opens up the debate on Hayek. Hayek claimed to be a liberal, and his critics asserted that he was a conservative. Yet, as Griffiths intriguingly shows, Hayek's aversion to planning was absorbed in diverse ways by British left-wing intellectuals and political activists, who came to acknowledge the role that markets and spontaneity had to play. The result is a subtle and inventive study that explores the broad reach of Hayek's towering influence in his later years. Not least, one of its most important findings is to demonstrate the permeability of conventional ideological fault-lines. In so doing, Griffiths locates himself firmly amidst a new generation of scholars who understand the intrinsic adaptability of political ideas. -- Michael Freeden, Emeritus Professor of Politics, University of Oxford