The first Great Big Green Week took place in September 2021, and was the largest event for climate and nature ever seen in the UK, with over 5,000 events taking place up and down the country.
Since then, Great Big Green Week has continued to grow and in 2024, 600,000 people took part. Communities, national organisations, institutions, businesses and media outlets joined in, ultimately putting pressure on the government to up its game on climate change.