John Warner did his undergraduate medical training in the School of Medicine, University of Sheffield and his initial paediatric experience was in the Children''s Hospital, Sheffield working under the mentorship of Professor Ronald Illingworth. He acquired his MRCP(UK) having worked for two years in adult medicine with a particular focus on respiratory disease. He then moved to the Hospital for Sick Children, Great Ormond Street as a Registrar and subsequently a Research Fellow and then Senior Registrar rotating through Queen Elizabeth hospital, Hackney and the London hospital. His first consultant post was a joint appointment between St Mary''s and the Brompton hospital. He then moved to Southampton as Professor of Child Health in 1990 and finally back to as Professor of Paediatrics and Head of Department Imperial College St Mary''s hospital campus from September 2006 to April 2013. He continues as Professor of Paediatrics and since 2008 he has been the Director of Research for the Women and Children''s Clinical Programme Group, Imperial College Healthcare NHS Trust (ICHT). He is the thme lead for paediatrics in both the Biomedical Research Centre in ICHT and the NW London CLAHRC (Collaboration for Applied Health Research and Care) He is President of the Academic Paediatrics Association
His research has focused on the early life origins of asthma and related allergic and respiratory disorders. He has published over 400 papers in scientific journals on these topics. He was Editor in Chief of the journal Pediatric Allergy and Immunology from 1997-2010 and chairman of the paediatric section of the British Society for Allergy and Clinical Immunology for 5 years until 2010. He is also a member of the Speciality and Training committee of the World Allergy Organisation and a past Trustee of the charity known as The Anaphylaxis Campaign. He was a member of the Advisory Committee for Novel Foods and Processes of the Food Standards Agency for 12 years until 2012 and was recognised for his work in food allergy research by the award of an OBE in 2013.
A summary of his research can be found in Developmental origins of health and disease edited by P Gluckman and M Hanson, Cambridge University Press, Cambridge, UK 2006 pp 349-369. Developmental origins of health and disease (pdf)
et al., 2012, Nocturnal temperature controlled laminar airflow for treating atopic asthma: a randomised controlled trial, Thorax, Vol:67, ISSN:0040-6376, Pages:215-221
et al., 2012, Are you a penpal? - exploring behaviours and factors associated with carrying adrenaline autoinjectors in adolescents and their parents, Annual Meeting of the British-Society-for-Allergy-and-Clinical-Immunology (BSACI), WILEY-BLACKWELL, Pages:1862-1862, ISSN:0954-7894