The RSPB and Buglife have announced that they will be working alongside the Land Trust to expand the Canvey Wick Nature Reserve in Essex.
This follows the transfer of 150 hectares of land to the Reserve by Morrisons supermarket, and will enlarge the reserve to almost five times its current size.
The site, once home to an oil refinery, was the first brownfield site to be made a Site of Specials Scientific Interest (SSSI) specifically for its bug and insect life.
The reserve is said to have as much biodiversity per square metre as a rainforest, and the RSPB and Buglife aim to create areas of bare ground and flower rich meadows to encourage insect life and the birds that rely on them for food.
The existing Canvey Wick reserve will remain open while work takes place on the new addition, and it is hoped that the new area will be open to the public later in 2017.