This deliverable summarizes work undertaken in task 5.2 “Information seeking behaviours amongst policy-makers in the age of Open Science”, aiming to assess the knowledge-base of policy-makers and how this is impacted by Open Science, via a small-scale online survey of European policy-makers, and a country case-study of the situation in Portugal via in-depth interviews. Its findings report scant evidence that Open Science significantly impacts scientific uptake. The study does, however, challenge the general notion of the “evidence-policy gap”, especially amongst our interview cohort of Portuguese policy-makers who also identify as academics.