Providing an efficient service depends partly on evaluation, which itself should take into account, amongst other things, the clients' views. This study set out to evaluate clients' perception of a coronary specialist nursing service (CSNS) in one area health board in Northern Ireland. Postal questionnaires were sent to a random sample of 70 clients of the CSNS. Results showed that the majority expressed satisfaction with the service, as well as with the information they received prior to discharge into the community. Their responses provide food for thought to those involved in the provision of such services.