The British Archaeological Association's 2013 conference was devoted to the study of Westminster Abbey and the Palace of Westminster. It also embraced Westminster School, which was founded at the Reformation in the Abbey precinct. Collectively, these institutions occupy a remarkable assemblage of medieval and later buildings, most of which are well documented. Although the Association had held a conference at Westminster in 1902, this was the first time that the internationally important complex of historic buildings was examined holistically, and the papers published here cover a wide range of subject matter.