Stephen Till is a Consultant in Allergy at the country's largest specialist centre for the treatment of allergies in adults and children based at Guy's and St Thomas NHS Foundation Trust.

He is one of few doctors in the UK to be recognised by the General Medical Council (GMC) as a specialist in Allergy after completing a dedicated 5 year training programme.

In addition to clinical practice, Dr Till is involved in medical research and allergy teaching at all levels. In 2009 he was winner of the World Allergy Organisation Henning Løwenstein Award for research in allergy.