He has worked on a variety of infectious disease systems: antimicrobial resistance in humans and livestock; verocytotoxigenic E. coli in cattle; foot-and-mouth disease in livestock; trypanosomiasis in humans and cattle; and transmissible spongiform encephalopathies in humans (vCJD), cattle (BSE) and sheep (scrapie).
His work is multi-disciplinary and combines field studies with laboratory experiments and quantitative analysis. He has an extensive record of providing expert advice to government both as a member of advisory bodies (including Defra’s Science Advisory Council, 2004-2006) and as an invited expert.
He received an OBE for his work advising the UK government during the 2001 foot-and-mouth disease epidemic. He is a fellow of the Academy of Medical Sciences and a fellow of the Royal Society of Edinburgh.