With increasing numbers of general medical practitioners (GMPs) becoming purchasers of health care, providers of surgical services need to understand factors influencing GMP referrals. Using an anonymous postal questionnaire, criteria used by 400 randomly selected general medical practitioners to make referral decisions were assessed. Issues regarding the importance of waiting lists, cost, distance and communication were assessed, along with previous training and fundholding status. The findings of this study reveal that waiting list times for consultation and treatment, along with communication, are the most important criteria influencing referral. Cost, travel and literature from each speciality were the least important factors. General medical practitioners are shown, in the majority, to remain unaware of the range of conditions managed by oral and maxillofacial surgeons. A series of strategies are outlined, which might be used to broaden the referral base for maxillofacial surgery. The need for active education of practitioners is emphasised and the possible effects of regionalisation of the service is discussed.