Abstract Background Doctors and medical students have a professional responsibility to raise concerns. Failure to raise concerns may compromise patient safety. It is widely known that medical students frequently encounter unprofessional behaviours in the workplace, but little is known about the barriers to raising concerns amongst medical students. This paper explores these issues and discusses some innovations in the medical undergraduate curriculum, offering a good practice model for other medical and healthcare curricula. We set out to ascertain the attitudes and experiences of medical students in relation to raising concerns. This data was then used to innovate the raising concerns curriculum, and access to the raising concerns system, in order to fundamentally improve patient safety and experience, as well as the student experience. Methods The authors conducted a mixed methods quantitative and qualitative research study. Research was based at a UK medical school and involved data collection using an anonymous, voluntary survey emailed to all medical students (n = 363) as well as voluntary attendance focus groups (n = 24) recruited by email. Both tools investigated student attitudes towards raising concerns and explored student ideas for solutions to improving the process. The focus group data was thematically analysed by three researchers. Results The authors identified five key themes which described medical student attitudes towards raising concerns. This article discusses these themes and the resulting work to enhance medical education within the medical school curriculum. Conclusions More research is needed to further address the barriers that medical students find in raising concerns. However, despite being a single study in one UK medical school, the authors propose some changes which they hope may inspire other educators to build upon their raising concerns curricula to foster more transparent undergraduate cultures and ultimately improve patient experience and safety.