My special interests include severe and unusual infection, tuberculosis, immunodeficiency, auto-immunity and allergy. I am a Trustee of the Bubble Foundation UK , a local charity that has raised over £3 million since 1994 to support the Children's Bone Marrow Transplant Unit’s work and research; successfully pump priming research posts that now have university or NIHR funding.
At national level, I am a key government advisor for the development of general and specialist paediatric services and training. I was the leader of the national review of paediatric specialist services for the UK in 2007, the head of the national training committee for paediatric infectious diseases, immunology and allergy, and I am now a member of the reviewer board of the Royal College of Paediatrics and Child Health (RCPCH).
I am an eminent advocate for primary immunodeficiency internationally, now heading the European Society for Immunodeficiency (ESID) as president after I contributed to the organization for many years in different roles, including chairing the education and BMT working parties. I am also a member of the medical advisory board for the International Patient Organization for Primary Immunodeficiency (IPOPI), and also served as president of the European Society of Paediatric Infectious Diseases (ESPID) previously. I consider myself a strong proponent for primary immunodeficiency awareness and I have contributed to the development of services in many countries, most notably Jordan, Malaysia, Australia and New Zealand.