The university is also represented by alumni educated in the liberal arts such as English literature, social sciences, economics, philosophy, medieval history, and music. The author Anthony Horowitz attended York and graduated in 1973 with a degree in English literature and art history. Greg Dyke, Chair of the Football Association and British Film Institute, is a former student, and graduated in 1974 with a BA in Politics, returning to York as university Chancellor from 2004 to 2015. The current Director of the Natural History Museum, Sir Michael Dixon, has a PhD in Zoology from York.