Gregor was the Director of Mental Health for Public Health England (PHE), a national public health agency for improving and protecting health and reducing inequalities from 2014-2021. Gregor is now an advisor to a range of Mental Health organizations, including Together All an online digital mental health service providing services across the UK, US and Canada, The Place2Be a UK children’s mental health charity and the Zinc Mental Health Academy, a new academy for developing young mental health leaders. Gregor works across the United Kingdom and internationally on mental health and wellbeing, and writes and speaks on mental health at national and international forums.