[citation needed] Having been appointed lecturer in 1994, he spent eighteen years teaching History of Art at the University of York, where he was made a professor in 2006.
In this same period, the Centre became recognised for its pioneering forms of online publication, its transformative support of the British Art Network, its expanded learning and events programme, and its ambitious in-house research projects.
[citation needed] As an art historian, Hallett is best known for his writings on eighteenth-century graphic satire, exhibition culture and portraiture, and for his books and catalogues on the artists William Hogarth and Joshua Reynolds.
[3] He also co-edited and contributed to the major online publication, The Royal Academy Summer Exhibition: A Chronicle, 1769–2018 (Paul Mellon Centre, 2018).
[citation needed] In 2021, he was appointed a member of the Reviewing Committee for the Export of Works of Art and Objects of Cultural Interest.