Professor Roger Hewson is the Scientific Leader for Viral Haemorrhagic fevers & Arboviruses at Public Health England’s Porton Down Institute; he is also joint head of the institute’s WHO Collaborating Centre for Virus Research & Reference. He received his B.Sc. in Biological Science - Biochemistry from Exeter (1987) and PhD in Membrane Protein Biochemistry from Oxford (1993). Following postdoctoral work in molecular virology with Henrik Garoff at the Karolinska Institute, Sweden, and Maria Salvato at the University of Wisconsin, he joined the group of Christopher Clegg and Graham Lloyd at the Centre for Applied Microbiology and Research to work on a range of zoonotic and arthropod borne viruses. He now leads a group of scientists, PhD students and visiting fellows who work on public health aspects of virology, pathogenesis and emerging disease. His research includes an in vivo and in vitro capability with highly pathogenic viruses at containment levels 3 and 4 (BSL4) and a large surveillance programme on emerging viruses with key collaborations in Western, Central and South East Asia, the Middle East and the Caucuses.