Juliette MacDonald is Professor of Craft History and Theory at the School of Design, Edinburgh College of Art, University of Edinburgh. Award-winning artist-designer Helen Whittaker is Creative Director at Barley Studio, York, where alongside her new commissions she oversees restoration work for a wide variety of stained-glass conservation projects. Keith Barley is internationally renowned in the field of stained-glass conservation and founded Barley Studio in 1973. Keith is Master Glazier for Ely Cathedral and has acted as consultant to the Metropolitan Museum of Art in New York, the Museum of Fine Arts, Boston, St Patrick's Cathedral, New York and the Cathedral of Siena in Italy.