This article is a case study exploring the experiences of two international postgraduate dissertation students studying in the Faculty of Health and Life Sciences at Oxford Brookes University. It has been written collaboratively by two academics with experience of postgraduate dissertation supervision, and two postgraduates who were supervised by them. The discussion is based upon academic diaries produced by each of the students. These diaries were analysed thematically, and the two main issues that emerged were the students’ growing confidence as research writers, and their relationships with their supervisors. Based on these diaries, this article records the ways in which international students can benefit from their supervisors’ mentoring to become expert writers in their fields, and in some cases, to go on to provide writing development for their peers. The article also examines the potential of a Faculty Writing Group to support international students in the production of their dissertations.