Lower Horse of islands (five of which later re-clustered to form Canvey Island), that broke away from the English coastline in the medieval period. Lower Horse Lower Horse is a uninhabited island off the English coast, lying in the Thames Estuary between Canvey Island and Stanford-le-Hope, close to . Administratively it is part of Thurrock unitary authority; the border with its ceremonial county namely the administrative county of Essex runs between it and Canvey Island. Smaller than normal markings for an area of saltings (traditional, open air, sea salt extraction through drying) appear in the Ordnance Survey map of 1919, which confirms
Canvey Island Independent Party to form the local government district and borough of Castle Point, ending Canvey Island's existence as a separate entity in local government. The Canvey Island Independents were established in 2004 to campaign for a return to Canvey Island's autonomy, which had been abolished 32 years previously. They argued that the current local government arrangements - which saw more councillors elected to the Borough Council from the mainland - were unfair to the residents of Canvey Island. They also campaigned for more power to be devolved to Canvey Island Town Council, a parish council subordinate to Castle Point which is responsible