2011: Giotto's Great Crucifix of the Friars of Santa Maria Novella in Florence
Dr Joanna Cannon (Courtauld Institute of Art)
2010: Castagno's David
Dr Anne Dunlop (Tulane University, New Orleans)
2009: Artist or Artisan? The Stone Sculptor in the Early Middle Ages
Prof Roger Stalley (Trinity College Dublin)
2008: Cloths, Clouds and Sacred Signs in the Art of Lorenzo Lotto
Prof Paul Hills (Courtauld Institute of Art)
2007: Painted Poetry in Renaissance Venice
Prof Hans Belting (State Academy of Design Karlsruhe)
2007: A Masterpiece and its Meanings: Fifty Years of Simone Martini's Annunciation
Prof Henk Van Os (University of Amsterdam)
2005: Romanesque Architecture, the Middle Ages and the Renaissance
Prof Eric Fernie (Courtauld Institute of Art)
2004: The Holistic Cathedral: Medieval Reality or Modern Fantasy?
Prof Paul Crossley (Courtauld Institute of Art)
2003: Thomas Becket, Francis of Assisi and the Birth of the Altarpiece
Dr Paul Binski (University of Cambridge)
2002: Love and Wine in Renaissance Ferrara: The Patronage of Alfonso d'Este
Prof Peter Humfrey (University of St Andrews)
2001: Clowns,Courtiers and Painters: Art and Experience in the Italian Renaissance Court
Dr Evelyn Welch (University of Sussex)
2000: The Future of the Museum
Dr Charles Saumarez Smith (National Portrait Gallery)

1998:  Neil MacGregor (National Gallery, London), 
           The Word Made Flesh: The Problems of Painting God

1999:  Prof Francis Haskell (University of Oxford), 
           Botticelli in the Service of Fascism

2000:  Dr Charles Saumarez Smith (National Portrait Gallery), 
           The Future of the Museum

2001:  Dr Evelyn Welch (University of Sussex), Clowns, 
           Courtiers and Painters: Art and Experience in the Italian Renaissance Court

2002:  Prof Peter Humfrey (University of St Andrews),  
           Love and Wine in Renaissance Ferrara: The Patronage of Alfonso d'Este

2003:  Prof Paul Binski (University of Cambridge), 
           Thomas Becket, Francis of Assisi and the Birth of the Altarpiece

2004:  Prof Paul Crossley (Courtauld Institute of Art), 
           The Holistic Cathedral: Medieval Reality or Modern Fantasy?

2005:  Prof Eric Fernie (Courtauld Institute of Art), 
           Romanesque Architecture, the Middle Ages and the Renaissance

2007:  Prof Henk Van Os (University of Amsterdam), 
           A Masterpiece and its Meanings: Fifty Years of Simone Martini's Annunciation

2007:  Prof Hans Belting (State Academy of Design Karlsruhe), 
           Painted Poetry in Renaissance Venice

2008:  Prof Paul Hills (Courtauld Institute of Art), 
           Cloths, Clouds and Sacred Signs in the Art of Lorenzo Lotto

2009:  Prof Roger Stalley (Trinity College Dublin), 
           Artist or Artisan? The Stone Sculptor in the Early Middle Ages

2010:  Dr Anne Dunlop (Tulane University, New Orleans), 
           Castagno's David

2011:  Dr Joanna Cannon (Courtauld Institute of Art), 
           Giotto's Great Crucifix of the Friars of Santa Maria Novella in Florence