This chapter examines the history and developments in Celtic studies in Great Britain during the twentieth century. In recent times medieval Celtic studies have attracted great numbers of amateur enthusiast and this is partly because antiquarian Romanticism of the eighteenth and earlier nineteenth centuries implanted indelible notions about the Celts in the popular imagination. However, because of a lack of synthetic histories of the discipline and of widespread and early language training in the late twentieth century, it is hard to imagine a realistic university curriculum that could bring today's students to the point of reconsidering Celtic philology from a philosophical standpoint or within the history of ideas.