In response to increased coastal flood events and resulting damages, the Environment Agency of the United Kingdom delivered a GBP 27 million project to realign the defences inland, providing significantly improved flood defences to allow for managed flooding. With the help of IUCN, a full assessment against the criteria and indicators of the IUCN Global Standard for Nature-based Solutionsᵀᴹ was conducted. The Medmerry managed coastal realignment is considered a strong Nature-based Solution. The building blocks of this solution highlight insights from some of the assessed criteria.