Renal specialty medical training in the UK was reformed in August 2007, with an emphasis placed on competency-based training and the publication of a new curriculum and assessment blueprint. This model of training places additional time demands on both trainees and trainers, with implications for job planning and service delivery. We evaluated the resource requirements and impact on service delivery of implementing a high-quality training programme in renal medicine. Each trainee maintained a portfolio containing details of workplace-based assessments. The change in educational environment led to improved trainee satisfaction. The mean total consultant time involved in implementing the training programme was 0.7 programmed activities (PAs) per trainee per week in the first year, which decreased to 0.5 PAs per trainee per week in the second year. This pilot study indicates that it is possible to integrate successful and high-quality specialty training in a busy clinical environment. The model outlined could form a template for postgraduate specialist training delivery in a variety of medical specialties.