This book seeks to bridge a gap in the historiography of Spain and Great Britain by arguing that while the eighteenth century witnessed periods of tension, conflict and hostility between the two powers, their relationship remained multifaceted and significant in other spheres. Throughout the eighteenth century, Spain and Great Britain passed through phases of open warfare, armed peace and deep suspicion. The British capture of Gibraltar and Menorca dealt a severe blow to the newly established Bourbon dynasty in Spain. Even in times of war, however, not all communication channels were closed, with numerous formal and informal contacts being made despite the volatile political climate and enmities. The contributors of this book go beyond the well-known animosity and conflicts to explore the spectrum of interactions, encompassing cultural exchange, traditional diplomacy, trade and espionage plus a multitude of other facets. This book is a valuable resource for researchers and students interested in the complex relations between Great Britain and Spain during the eighteenth century, as well as for a broader audience of historians and both undergraduate and postgraduate students of history and international relations.