Justin is Professor of Biophysical Chemistry at the University of Oxford and Tutorial Fellow in Physical Chemistry at University College. Justin studied Chemistry at the University of Oxford, as a member of Hertford College. In 2001 he started a PhD in the laboratory of Carol Robinson in the Department of Chemistry at the University of Cambridge. After his PhD he spent a year as an MRC Discipline Hopping Fellow at Birkbeck College, London. Justin was awarded the Norman Heatley Award from the Royal Society of Chemistry and elected RSC Fellow in 2019. He is co-founder of Refeyn.