Dan studied for a BSc (Hons) Physiology and Pharmacology at the University of Central Lancashire and an MSc in Molecular Pathology and Toxicology at the University of Leicester . He subsequently spent time working within the Safety Assessment Department, AstraZeneca at Alderley Edge, Cheshire before returning to Leicester to complete a PhD within the Department of Cancer Studies and Molecular Medicine.
He held a postdoctoral position at the Department of Pharmacology and Therapeutics (latterly Molecular and Clinical Pharmacology) at the University of Liverpool, under the supervision of Professors Munir Pirmohamed and Kevin Park. In 2009 he moved to the newly created Wolfson Centre for Personalised Medicine, University of Liverpool and in 2013, was awarded a Tenure-Track fellowship by the University of Liverpool and was latterly confirmed to the position of Lecturer in Pharmacology in 2017. His research interests focus on biomarkers and models of cutaneous adverse drug reactions.