Postle is an accomplished British author. He served as a curator at the Tate Collection, and Head of British Art to 1900. He has published books on British art from the 18th to the 20th century. In 2004, Postle served as a curator for Tate Britain's exhibit Year of the Garden which marks the bicentenary of the Royal Horticultural Society in London. Year of the garden | Magazine Antiques | Find Articles at BNET.com Prior to joining the Tate, Postle served as Director of the University of Delaware's London Centre and an Associate Professor of Art History for 5 years. Annual service awards luncheon honors 384 employees The Courtauld Institute of Art : Newsletter Archive

In 1981, Postle received his MA from the Courtauld Institute of Art at the University of London in the United Kingdom Courtauld Institute of Art and received a degree in Art History from the University of Nottingham

In 2008, Postle was elected as a fellow to the Society for Antiquaries of London. Society of Antiquaries of London - News in brief