Remember to use appropriate, specific and located examples for this topic. The 93 hectare Canvey Wick in Essex was the first brownfield site to be designated as a Site of Special Scientific Importance (SSSI). Canvey Wick was a landfill and oil refinery site, that closed in the 1980s and then lay derelict. In 2005, it was designated as a SSSI and transformed into a nature reserve. The area is rich in plants, insects and animals, with more species per m² than on any other site in the UK. It has even been referred to as ‘England’s Brownfield Rainforest’.