Michael has a research interest in optimising antimicrobial prescribing in children. He is the joint Chair of Penta. He was the previous Chair of the ESPID Research Committee. In the UK, he Chairs the Royal College of Paediatrics and Child Health Infection Committee. He is the Chief Advisor on anti-infectives to the Children’s British National Formulary. He also Chairs the Department of Health’s advisory committee, Antimicrobial Resistance and Healthcare Associated Infection, which advises the UK government on antimicrobial use and resistance. He has published 220 papers on the optimal use of antimicrobials in children.