As part of a larger study on learning outcomes for the first year of postgraduate medical training (already reported), semi-structured interviews with middle grade trainees were used to explore their perceptions of trainee development during this first training year. Data generated focused not only on learning outcomes, but also on important process issues. Dissatisfaction was expressed with formal and informal teaching and learning opportunities. Factors that enhance the learning environment were identified. These included being supported, a feeling of being a valued member of the team, being stretched but not over stretched, having a broad range of experiences, knowing the system, having a clear remit and being well organized. Factors inhibiting the learning environment included fractured working patterns, insufficient time with patients and seniors, as well as the converse of many of the enhancing factors. The process issues gathered in this paper will be of interest to those involved in the delivery of training for junior doctors.