Dr Rosy Wells is a consultant in paediatric allergy and Clinical Lead for the paediatric allergy service at St George's Hospital, London. She assesses and treats children with food allergy, anaphylaxis, eczema, asthma, allergic rhinitis and other complex atopic conditions.

She has particular experience in food oral immunotherapy for young children. Working with Dr Perkin, she helped establish this treatment within NHS services. Her approach includes prevention, practical education and early management of allergic disease.

Dr Wells studied medicine at the University of Edinburgh and completed general paediatric training in London before specialising in paediatric allergy. Her qualifications include a Master's in Advanced Paediatrics, a Postgraduate Certificate in Allergy and the RCPCH specialist interest module in allergy.

She has led the St George's service since 2018 and co-chairs the allergy section of the RCPCH specialty advisory committee. She contributes to postgraduate education and research, including a national survey of UK allergy services. Her team's programme of allergy emergency kits and school training received a Free From Hero award in 2023.