Foulness SSSI Foulness SSSI Foulness SSSI is a 10,702 hectare biological Site of Special Scientific Interest covering the shoreline between Southend-on-Sea and the Crouch estuary in Essex. It is a key site in "A Nature Conservation Review", and is part of the Essex Estuaries Special Area of Conservation. It covers two Ramsar wetland sites of international importance, 'Crouch and Roach Estuaries' and 'Foulness'. An area of 6.4 hectares is Shoeburyness Old Ranges, a Local Nature Reserve managed by the Essex Wildlife Trust. Most of the site is owned and managed by the Ministry of Defence. Natural England describes it as "extensive intertidal
Foulness Island the Ministry of Defence, and access to the island is only permitted with a pass, obtainable from Shoeburyness. The island's visitor centre is open to the public on the first Sunday in summer months, from April to October inclusive from 12.00 to 16.00 hrs, but permission must be sought to visit. Until 2007, members of the public could visit the island's pub by telephoning ahead; if they had not done so, access would be denied. Foulness is part of the electoral ward called Foulness and Great Wakering. The population of this ward at the 2011 census was 5,738. The island