To complement the exploration of action research given in the HEA action research practice guide (Arnold and Norton 2018), we offer a collection of case studies to provide a snapshot of the types of action research being undertaken across the higher education (HE) sector. These case studies were submitted by colleagues following a single request on a mailing list. 1 The cases incorporate diverse themes including curriculum development, interactive teaching methods, use of technology in teaching, students as researchers, teacher education, student transition, and inclusive practice. These issues offer a glimpse into the concerns of higher education practitioners.Each case study provides an individual's story of their action research journey. These accounts are not full research reports. They provide personal insights into the work that was undertaken, assessments of the impact that their research has had on practice, and a summary of any lessons learnt in the process.As we read these accounts, we were struck by the way that action research is providing a vehicle for established and new staff alike to develop, explore, question, and evidence their practice. Some of the accounts provided are from experienced pedagogues, and others are from those researching and writing publically for the first time.