Open Policy Making involves engaging a wide range of views through consultation with experts, user journeys, social media, multidisciplinary teams, coproduction and crowdsourcing. It also gathers new insights using techniques like behavioural insights, horizon scanning, systems thinking, mystery shopping, data science and scenario modelling. Solutions are tested in the real world through prototyping, randomized controlled trials and evaluating what works. Open Policy Making has a mindset that is networked, humble, curious, transparent, aware of complexity and interconnections, collaborative, ambitious, challenging of assumptions, and open to challenge while being committed and flexible.