The public sector has a crucial role to play in driving impact economies, either as a regulator, a market participant or a market builder. As an increasing number of GSG NABs are driving efforts in the policy space, how can they engage with their governments most effectively, building robust relationships and influencing impact policy making? What are the main challenges NABs face and what strategies have proven most efficient to overcome them? In this dialogue, the GSG policy team and a group of NABs will share recommendations, experiences, best practice and lessons learned, seeking to deliver a practical tool and to strengthen a platform for continuous collaboration in the policy space within the GSG community.