Stephen has been involved with microbiological food safety research since undertaking his PhD in 1989 on diagnostic methods for Campylobacter and related bacteria. Now at Lincoln University, he has over 140 peer-reviewed papers, and leads under- and postgraduate courses, and PhD studies, in food safety and microbial biotechnology. Current projects include: Arcobacter: Molecular epidemiology of antibiotic resistance: Advanced photonic methods for characterising bacteria: Proteomics of winemaking yeast; Metagenomics of wild-fermented wines; Food safety of edible snails in Cameroon: Spectral analysis of fat-filled milk products. He has also been engaged as an expert witness and research consultant in the food safety area.