Following retirement from Kersia in December 2022, John established Pendennis Food Hygiene Ltd. and provides consultancy on food safety incident management, environmental pathogen management systems, hygienic design and general food hygiene. John remains active with Kersia as the Director of the Scientific Committee of the Pioneering Safe Food Association, which Kersia founded. John is also an Honorary Professor in Food Safety and Hygienic Design at Cardiff Metropolitan University. From January 2021, John was Principal Corporate Scientist for the Kersia Group, having been Technical Director at Holchem Laboratories Ltd since 2014. Prior to this John was Head of Food Hygiene at Campden BRI, for over 20 years. John’s work has covered the design of the food manufacturing infrastructure (buildings, equipment) and processes (personal hygiene, cleaning and disinfection, maintenance), resulting in guidance on many of the hygiene practices used today. Internationally recognised in the troubleshooting and management of Salmonella and Listeria, John continues to add to the scientific literature and is the editor of a trilogy of food hygiene books. He has supported the IAFP, EHEDG, SOFHT and GFSI for many years, has chaired various ISO, CEN, GFSI and EHEDG committees on hygienic design and chemical disinfection and has sat or sits on, UK government committees on food safety and hospital acquired infections.