It has been described as a once in a generation piece of environmental legislation and is key to the government’s commitment to be the first generation to leave the environment in a better state than that in which we found it. The Environment Act passed into law on 9 November 2021 – more than 1,000 days and three Parliaments since its first draft was published in 2018. Its journey was tumultuous, and its fate, at times uncertain. In this documentary, ENDS Report speaks to politicians and environmental policy experts to get the inside story on how this landmark piece of legislation was created – and finds out what the act’s architects think of it now.