Green infrastructure (GI) such as street trees, parks, green roofs and raingardens can play a vital role in keeping our towns and cities clean, cool, safe and healthy. However, GI needs to be carefully planned to make sure we have enough green space for people and nature to thrive. To help local authorities deliver high quality, multifunctional GI that meets local needs as well as national priorities, Natural England has been developing a framework of GI Principles and Standards in partnership with a broad range of researchers and practitioners.