AimProfessionalism has been linked with improved patient care and reduced complaints. Our goal was to define what, if any, differences exist in the professional values and behaviours of younger general practitioners (GPs), those aged 34 years and under, compared with their older colleagues, those being aged 55 years and over.MethodAn online cross-sectional questionnaire survey of GPs in Scotland was undertaken during 2018 using a modified version of the Nijmegen Professionalism Scale, which comprises 4 domains: professionalism towards patients, towards colleagues, towards society and towards oneself. Descriptive and inferential data analysis was undertaken between responses from both GP groups.Results273 responses were obtained. Of these, 106 respondents were classed as either younger GPs (n=55; 51.9%) or older (n=51; 48.1%). The greatest number of differences were found in the Professional Distance subsection of professionalism towards patients. The greatest single disparity in responses was to distinguish between personal and professional interests in negotiations (p<0.0001). Younger GPs also reported they were less likely to bear the consequences of their own actions (p<0.02) and to be more likely to give others the blame or responsibility (p<0.006). Younger GPs report being less skilled in quality management, being less able to signal suboptimal care (p<0.006) and justify indications for making home visits (p<0.001).ConclusionWhile there were areas of similarity in relation to collaborating with colleagues, reflection on learning and dealing with emotions, differences were identified in relation to the 5 other subsections. Some differences may be explained by lack of exposure and experience, but this may not account for all the differences reported.