This book examines the range and complexity of unionist political identities, ideas and beliefs in the non-English parts of the United Kingdom in the mid-twentieth century. It discusses the careers of eight politicians from Scotland, Wales and Northern Ireland: Walter Elliot, Tom Johnston, Lady Priscilla Tweedsmuir, Gwilym and Megan Lloyd George, Huw T. Edwards, Harry Midgley and Dehra Parker. Through examining their political and personal lives it uncovers the varieties of unionism that held the multi-national UK together. Challenging the idea that Britain was in the process of breaking up, it argues that the Union provided a focus for loyalty in the United Kingdom that contributed to the continuing formation of identities of Britishness.