Meet the ProActiveTx Founders
ProActiveTx was founded in 2025 as a Spinout from the University of York. York is a Russell Group University and the Founders are among the leading clinician-scientists in the UK. They want to ensure their world-leading research makes an impact and helps as many people as possible.

Professor Simon Gilbody
Co-founder, Director & Chief Medical Officer
Simon is a senior NHS clinician of 30 years’ service. He is also Professor of Psychological Medicine. He is among the top 1% of most highly cited scientists in the world. Simon combines his clinical background with his scientific training in epidemiology to design rigorous clinical trials. These form the evidence base for services across the NHS and in ThirdAgeTx. He is a Fellow of the Academy of Medical Sciences and an NIHR Senior Investigator.

Professor Paul Galdas
Co-founder & Strategic Advisor for Men’s Health
Paul is an NHS-trained nurse leader who holds a PhD in health research. He is the UK’s only Professor of Men’s Health. Paul has pioneered the use of behavioural strategies in the male workforce and in elite sporting environments. Paul leads the MOVEMBER and elite sports partnerships to develop the ProActiveTx Performance Habits programme.

Professor Dean McMillan
Co-founder, Director & Chief Scientific Officer
Dean is a Cambridge-educated psychologist, with Doctorates in clinical psychology and population science. As the foundation Professor of Clinical Psychology at the University of York, he is a thought-leader in behavioural approaches to depression, anxiety and stress. He designs the behavioural coaching programmes offered by ProActiveTx.