Dr Janet Corry is currently Reader in Food Microbiology at the University of Bristol, Department of Clinical Veterinary Science. She has worked as an Assistant Experimental Officer for the ARC (Agricultural Research Council) Food Research Institute, Norwich and the ARC Meat Research Institute, Langford, Bristol. After that she became a Senior Scientist at the Leatherhead Food Research Association and then Senior Scientific Officer at the Metropolitan Police Forensic Science Laboratory, London. After that she was Senior Scientific Officer/Principal Scientific Officer in the UK Ministry of Agriculture, Fisheries and Food (MAFF), Food Science Division, London. She was subsequently appointed as Senior Microbiologist for J. Sainsbury supermarket in charge of their food microbiology laboratory in London. She has edited numerous books, has lectured on WHO Food Microbiology courses at the University of Surrey and runs an intensive two-week microbiology module for the University of Bristol MSc in Meat Science and Technology. Gordon Curtis trained at the Royal Army Medical College in London and subsequently worked in various army laboratories, mostly in the Middle East. He then worked in hospital microbiology departments at Bristol, Bath and Oxford where, for many years, he was in charge of the media preparation department at the Radcliffe Infirmary and the John Radcliffe Hospital. A former Fellow of the Institute of Biomedical Sciences he is now retired and has held part time teaching appointments at the Oxford College of Further Education and the Oxford Polytechnic and is a member of the International Committee on Food Microbiology and Hygiene's Working Party on Culture Media (WPCM). He was appointed Convenor of the WPCM in 1990 and has served on CEN groups associated with culture media and their quality assessment for many years. He is a member of the Society for Applied Microbiology. Dr Rosamund Baird is currently Honorary Senior Lecturer in the Department of Pharmacy and Pharmacology at the University of Bath. After graduating with a Bachelor of Pharmacy and a Ph.D, she undertook a post-doctoral fellowship at Leiden University and was appointed Honorary Lecturer at St. Bartholomew's Hospital Medical College. She then worked as principal pharmacist and regional quality controller at St. Bartholomew's Hospital, London, specializing in pharmaceutical microbiology. She has published and lectured extensively in this area and has also edited a number of related publications on both pharmaceutical and food microbiology. As a consultant, she has provided specialist training on microbiological aspects of production, GMP, QA, auditing and validation to the pharmaceutical, cosmetic, medical device and herbal industries. She has served on a number of national and international committees, including those of the British Pharmacopoeia Commission and was awarded a Daphne Jackson Fellowship at the University of Bath in 1996. She is an honorary member of the Pharmaceutical Microbiology Interest Group and was elected Fellow of The Royal Pharmaceutical Society in 2004.