DEFRA asked for consultation responses on the implementation of biodiversity net gain (BNG) for nationally significant infrastructure projects (NSIPs). The government outlined their commitment to achieving sustainable economic growth through the development of high-quality nature-positive infrastructure.

BNG is a way of creating and improving natural habitats. BNG ensures development has a measurably positive impact (‘net gain’) on biodiversity, compared to what was there before development.

The government propose introducing BNG for NSIPs from May 2026 to provide a clear framework to ensure new major infrastructure developments leave biodiversity in a measurably better state than before development took place. This will contribute to the legally binding Environment Act 2021 targets for biodiversity, and provide wider benefits for climate change adaptation and mitigation.