The study will involve updating the highly-cited Cochrane systematic review ‘Support for healthy breastfeeding mothers with healthy term babies’, conducting a mixed-methods review of process evaluations and engaging with stakeholders to develop NHS guidance for breastfeeding support. The aim of the research is to improve health outcomes and reduce health inequalities for women and children in the UK by increasing breastfeeding rates. Dr Lynn will be leading on the cost-effectiveness analysis of breastfeeding support interventions relevant for the UK. Further details for Action4Breastfeeding can be found at https://fundingawards.nihr.ac.uk/award/NIHR130995.