This study investigated the policy processes related to the 2012 adoption of the Jamie’s Ministry of Food programme by the Victorian Government in Australia. The aim was to provide insight into obesity prevention policy change processes to help strengthen future health promotion action. State-level government policy processes were examined through key informant interviews and a review of relevant documentation. Data were analysed using the Multiple Streams Theory and the Advocacy Coalition Framework in order to understand influences on relevant policy processes and strategies used by policy advocates to facilitate policy adoption. We found that policy adoption was facilitated by dedicated national funding for preventive health at that time, the relatively small number of stakeholders involved in the policy development process and the anticipated support for the programme by the general public due to the association with celebrity chef, Jamie Oliver. We identified that policy brokers aligned the policy with decision-maker ideologies and broader government objectives, and proactively managed potential criticisms. Evidence of intervention effectiveness was not a major driver of policy adoption. We conclude that, iven the complexity of policy processes for obesity prevention, multiple, reinforcing strategies are likely to be needed to facilitate policy change. Support for the adoption of obesity prevention policies is likely to increase when framing of policy options aligns with decision-maker values and has broad public appeal.