2016-present: N8 Chair in Soil Microbiology, Department of Animal and Plant Sciences, University of Sheffield 2016-present: Research Leader in Soil Ecology (Grade G), The James Hutton Institute, Invergowrie, Dundee 2015-2016: Adjunct Chair in Rhizosphere Interactions, Department of Animal and Plant Sciences, University of Sheffield 2013-2016: Theme Leader – Sustainable Production Systems, (Grade G) The James Hutton Institute, Invergowrie, Dundee 2011-2013: Research Leader in Soil Ecology (Grade F), The James Hutton Institute, Invergowrie, Dundee 2009-2011: Research Leader in Soil Ecology (Grade F), Scottish Crop Research Institute (SCRI), Invergowrie, Dundee 2000-2009: Research Leader in Soil Ecology (Grade 5/E), Scottish Crop Research Institute (SCRI), Invergowrie, Dundee 1997-2000: Research Fellow, Department of Biology, University of York 1995-1997: Senior Research Assistant, Biological Sciences, Lancaster University 1992-1995: Research Associate, Biological Sciences, University of Durham 1992: PhD, Department of Biological Sciences, University of Warwick: Regulation of expression of the glutamine synthetase gln-α gene of Phaseolus vulgaris L., Supervisor: Dr Julie Cullimore  1988: BSc (Hons), Biological Sciences, University of Nottingham

Arbuscular mycorrhizal ecology Microbial nitrogen cycling Free-living nematode dynamics