Scarcity of resources for public health and mounting pressures on health systems such as the Covid-19 pandemic, make it vital to evaluate public health interventions and move away from traditional evaluation methods. This is important to understand not just the financial value of public health interventions, but also the wider social, environmental and economic value. This review aims to present the existing evidence base on the Social Return on Investment of physical activity and nutrition interventions, demonstrating the wider social and environmental benefits of these interventions.