The essays published in this volume derive from the papers given at a Symposium held in the Spanish Embassy in London on 24 and 25 October 2013. The idea for a conference commemorating the third centenary of the Treaty of Utrecht came from the Ambassador of Spain, and it seemed appropriate that historians and legal scholars from Britain and Spain should meet for the occasion to reflect on the War of the Spanish Succession and the resulting peace settlement, in both of which the two countries were so deeply involved.