David Briggs is Emeritus Fellow of Wolfson College, University of Cambridge. He completed his BSc and PhD from Durham University. He has served as Demonstrator in Botany, Botany School, University of Cambridge from 1961 1964; a Lecturer in Botany, University of Glasgow from 1974 2001; and Lecturer in Botany, and Curator of the Herbarium, Department of Plant Sciences at Cambridge University from 1974 2001. He has a lifelong interest in conservation, evolution, genetics and taxonomy. His practical conservation experience includes being a former member of the Wicken Fen Committee of the National Trust and the Milngavie Civic Trust. He was formerly the Chair of Cam Valley Forum - an action group active in the conservation of the Cam, its flood plain and tributaries. He has co-authored Plant Variation and Evolution, also by Cambridge University Press, now in its third edition.