Medical simulation has become an integral part of modern-day surgical training. Despite its benefits, it is still not widely incorporated in the curriculum of trainees. The Urology Boot Camp (USBC) is an innovative 5-day course aimed at trainees entering the UK training scheme. Since its implementation, there's been increasing interest by non-UK trainees.To assess the experiences of non-UK trainees in the USBC, both quantitatively and qualitatively, including skills progression analysis.This double-group cohort retrospective study included 20 delegates from non-UK countries and 76 trainees from UK who attended the USBC in 2017 and 2018. Trainees undertook pre- and post-course MCQs, pre-course operative experience questionnaires and a 12-month post-course survey on the usefulness of the skills acquired.Differences in mean MCQ scores between UK and non-UK delegates at baseline and after the course were assessed by the independent T-test. Each core urology procedural skill was evaluated by an expert and graded according to a Likert scale (1-5). The Kruskal-Wallis test was used to assess the differences in the scores between both groups on endourological techniques. A Likert scale (1-5) was used to grade the participants' answers to the post-course 12-month survey.Trainees from UK scored significantly higher in the pre-course MCQ assessment, however after completion of the boot camp, no significant difference was noted. There were no differences between the groups at e-BLUS completion times, and both groups significantly improved their results. A 12-month post-course survey on the utility of training during the boot camp and qualitative evaluation of the course by overseas delegates was very positive.The USBC is a valuable learning experience that leads to improvement of technical and soft skills of UK and non-UK trainees alike.