This document discusses the roles that learned societies and institutions can play in raising issues and influencing science policy. It examines what policymakers need, which is access to evidence and clarity, and what learned societies have to offer, such as expertise and convening power. It also considers the challenges of being heard by policymakers and ensuring science policy discussions are timely and politically aware. Finally, it looks at the extent to which public opinion should influence science policy and examples of how it has, such as through focus groups or evidence-based advocacy campaigns.