The report ‘Living roofs and walls - from policy to practice: 10 years of urban greening in London and beyond’ provides a summary of the progress that has been made in mainstreaming green roofs and walls as a response to the challenges facing cities now and in the future. It also updates information about the benefits of green roofs and walls and highlights policy development in London and elsewhere which aim to encourage more urban greening to ensure the urban environment becomes greener, healthier and more resilient to the impacts of climate change.