Context: Since the 1970s, the UK medical student body has become increasingly diverse in terms of gender, ethnicity and age, but not in socio-economic background. This variance may be linked to large differences in how individual medical schools interpret and put into practice widening participation (WP) policy. However, attempts to theorise what happens when policy enters practice are neglected in medical education. We aimed to explore the dynamics of policy enactment to give a novel perspective on WP practices across UK medical schools.Methods: We used a qualitative design employing individual telephone interviews to elicit views and concerns around WP from admissions deans and admissions staff within UK medical schools. We carried out in...