1. Public Health England; Food Water and Environmental Microbiology Laboratory Porton; Porton Down Salisbury UK
2. Public Health England; Food Water and Environmental Microbiology Laboratory London; Colindale London UK
3. Public Health England; Food Water and Environmental Microbiology Laboratory York, FERA; York UK
4. Public Health England; Food Water and Environmental Microbiology Laboratory Preston; Royal Preston Hospital; Preston UK
5. Public Health England; Food Water and Environmental Microbiology Laboratory Birmingham; Good Hope Hospital; Sutton Coldfield UK
6. Gastrointestinal Bacteria Reference Unit; Public Health England; Colindale London UK
7. Gastrointestinal; Emerging and Zoonotic Infections Department; Public Health England; Colindale London UK
8. University of Liverpool; Institute of Infection and Global Health; Liverpool UK