Abstract. This paper reports a study of the characteristics, skills and competencies of historians, both amateur and professional, as users of archives. It makes two main comparisons: between professional historians and amateurs, typically genealogists and family historians; and between participants in Slovenia and in the United Kingdom. The study is in two parts. First, a detailed and comprehensive literature analysis, including information competencies of archivists where relevant, as well as those of users, to identify the main issues to be examined. Second, a Delphi study with a small panel of archivists from both countries, to establish consensus or divergence of opinion, and to explore the differences, if any, between amateur and professional historians, and will also investigate any national differences. The results show a high degree of consensus, and point to common issues in the skills and competencies needed by both groups, which should be explored in a larger study.