A series of rapid literature reviews using systematic methods were undertaken drawing on PRISMA guidelines to synthesise existing evidence underpinning the UNICEF UK BFI standards. Separate searches were conducted for the following key topics:
Antenatal Care
Early/hospital-based or community-based infant feeding support
Skin-to-skin care
Rooming-in
Neonatal 
Responsive feeding
Code of Marketing of Breast-milk Substitutes
Workforce Education
Baby-led weaning
Couplet care
Infant feeding and attachment

Full search strategies are contained within the document.