Renaissance and baroque literature, visual art, material culture; emblems and gardens; the cultures of post-reformation Catholicism; early-modern Scotland; textual editing.
Art and literature of place from the seventeenth century to the present day, writing about place, environment, and nature, environmental humanities.
General editor of the Oxford University Press complete edition of The Works of St Robert Southwell; holder of the Bibliographical Society Barry Bloomfield Award.
Writer of literary non-fiction about about place and nature.
Early modern poetry; twentieth century poetry; literature of place and environment; exile and internationalism; Catholic writing since the reformation.