ABSTRACT Background Despite commitment across national medical education and training bodies to tackle differential attainment (DA), alongside a wealth of research into contributing factors and solutions, progression in narrowing the gap has lagged. This study explores the lived experiences of doctors facing DA, career progression barriers and their wider consequences. Methods Interpretative phenomenological analysis was chosen as the methodological framework. The six doctors interviewed were released from General Practice training before enrolling in a ‘targeted’ intervention scheme designed to support them with training completion. Results The cohort included four international medical graduates and two graduates from the United Kingdom. Three participants were neurodiverse. Three inter-related themes were identified. 1) ‘Career insecurity’ is defined as uncertainty about career prospects and attainment of career goals. At varying points along their journey navigating through progression barriers, participants frequently questioned their futures and the decision to persist in the arduous pursuit of training completion. 2) ‘Psychological injury’ featured prominently in the experiences of the ‘targeted trainees’. Feelings of worthlessness, helplessness, low energy and mood, and ‘traumatic’ experiences were described. 3) ‘Social injury’ illustrates consequences to doctors’ familial and social contexts (including relationships), as well as wider societal consequences (such as attrition). Conclusion Our research evidences the consequences of DA and career progression barriers. We highlight the urgent need for escalated efforts in addressing the challenges faced by different groups of doctors and narrowing the attainment gap. Recommendations for interventions are included in our study.