Ensuring uptake and scaling of parenting programmes involves considering both supply-side factors (e.g., programme characteristics such as programme requirements, formats, delivery platforms etc.) as well as the demand side factors (e.g., policy and contextual affordances, as well as personal characteristics, skills and motivations). The scale-up phase also involves ensuring cost-effectiveness (e.g., via a cost-effectiveness analysis), efficacy (e.g., via an effectiveness study to ensure that the programme is still effective when scaled), and sustainability (e.g., through integration into existing platforms). Recognizing that one size does not fit all , it is also critical to ensure that the programme addresses the unique and diverse needs and circumstances of parents to enable successful uptake.