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President of the Geography Section of the British Association for the Advancement of Science for 2004-05.
Vice President (for Research) and Member of Council, Royal Geographical Society, 2007-.
Member of editorial boards: Annals of the Association of American Geographers, Transactions of the Institute of British Geographers, Isis, Ecumene, Progress in Human Geography, Journal of Historical Geography, Interdisciplinary Science Reviews.
Charles Lyell Lecturer, British Association for the Advancement of Science, 1994-95.
Hettner Lectures, University of Heidelberg, 2001.
Murrin Lectures, University of British Columbia, 2002.
Progress in Human Geography Lecture, Royal Geographical Society, 2005.
Appleton Lecture, University of Hull, 2007
Von Humboldt Lecture, U.C.L.A., 2007
Gordon Manley Lecture, Royal Holloway, University of London, 2007