Development	Key Actor(s)	Evidence
Problem stream	Experts • Department of Health • Health Research Board • Royal College of Physicians Ireland	Perception that alcohol consumption was entrenched at levels which were internationally high, with major health harms associated with them.
Policy stream	Steering Group • CMO, Dr Tony Holohan • Department of Health	Identified clear set of population-level policy alternatives for the government from the international evidence-base.
Political stream	Health ministers • Various junior health ministers • Leo Varadkar Advocates • Dr Frank Murray • Alcohol Health Alliance Ireland	Election results and efforts by the public health advocacy community persuaded signalled a shift in the public mood. Advocates detected shifts in the public mood and mobilised experts and organisations.