Please note this voucher can only be used for new memberships it cannot be used to renew an existing membershipthe wildfowl wetlands trust wwt is a world leading conservation charity committed to saving vulnerable wetlands and the wildlife they support founded in 1946 by the late sir peter scott wwt now has a network of nine wetland centres where visitors can get close to rare wildlife explore wetlands be inspired by nature and above all have fun each centre enjoys its own unique