The process of development, and implementation, of a multi-source feedback tool for consultant anaesthetists is described. Rater groups included the anaesthetist-in-charge, anaesthetic assistants, anaesthetic trainees and, for some, the nurse-in-charge of the floor. Multiple items were developed to rate consultant behaviour, especially non-technical aspects of behaviour, and used across some or all of the rater groups. Response rates for items and by rater groups are discussed. The collated information formed part of the annual staff appraisal process conducted by the director. The information is useful for the director and the process is well-accepted by the staff.