The session will introduce the agreement between UK Government and Government of Peru to build $5-billion of climate resilient infrastructure to protect the population of Peru against flooding and landslides, in response to the devastating flooding of 2017. The programme aims to decentralise spending outside of Lima and bridge borders across the regions by investing in parts of Peru that are historically underserved. The programme covers the construction of 74 schools, 14 hospitals, 100’s of kms flood defence schemes across 17 river basins (including early warning systems), 6 city-wide drainage schemes and 60,000 ha of afforestation. The projects have built in climate resilience and nature-based solutions in a country without standards or guidance related to these topics. International expertise is provided by UKDT, a consortium of UK-based engineering companies. UKDT provide technical, delivery and commercial assurance across the programme lifecycle, advising the government using international best practice and building capacity through a large knowledge transfer component. The aim of this session is to introduce the programme, its achievements, challenges and legacy, as well as to discuss how water-related programmes of a similar scale and ambition can be implemented across other low-middle income countries which face similar challenges to Peru.