Bacterial pathogens, and the rise of antimicrobial resistance, are among the greatest threats to human and animal health. The emergence and spread of these organisms is governed by basic evolutionary processes, whereby adaptive phenotypes are favoured by selection - leaving evidence in the bacterial genomes. Analysing this genome variation, my group uses digital microbiology and bioinformatics techniques to address complex questions in the ecology, epidemiology and evolution of bacteria. Current projects focus on pathogens including Campylobacter, Acinetobacter, E. coli, Helicobacter, Staphylococcus and Streptococcus.