The King’s Fund’s Information and Knowledge Services team has been responding to health policy questions for many years as part of its enquiry service. We get queries from a range of organisations and individuals including NHS staff, those working in local authorities and the voluntary sector, academics, researchers, students and the public. No question is a stupid question and we aim to answer each one as well as we can. We put our enquiries into five categories: case studies, counts, clarification, comparisons and comments. Let’s look at each category in turn using real examples of the queries we get sent.