Practitioner enquiry is a well-established approach to professional learning that can facilitate teachers' pedagogical knowledge and improve their educational practice. That said, practitioner enquiry is less frequently seen in physical education (PE) initial teacher education and in the general practice of PE teachers. This study examines the experiences and perceptions of 17 secondary PE preservice teachers (PTs) who completed a small-scale practitioner enquiry as part of their one-year postgraduate initial teacher education programme. A questionnaire and group interviews -- conducted before, during, and at the end of the small-scale enquiry -- were used to generate data. The findings revealed that the practitioner enquiry promoted greater collaboration between the PTs and their school-based mentors as they worked together to develop their shared understanding of the teaching and learning process. The practitioner enquiry also facilitated the PTs' critical engagement with pedagogical research, enhanced their curricular knowledge and nurtured their independent professional identity.