Thames Estuary Airport a major International hub at Cliffe which would link in with the HS1 line through Kent to St Pancras. The Cameron government was committed to a full Aviation Review and a scoping study was released in March 2011. The "Marinair" proposal was put forward in the 1990s, in which an airport would be built on an offshore artificial island in the Thames estuary, north east of the Isle of Sheppey. When the proposal was put forward again in the government's 2002 consultation, it was rejected on the grounds of insufficient information and prohibitive expense. The Marinair plans had been developed
Grand Codroy Estuary estuary since 1974. The estuary consists of adjoining marine and intertidal habitats with an elevation no more than one metre. Four islands are located within the estuary, and the intertidal sandbars give way to mudflats "supporting rich growths of Zostera". The site is surrounded by cultivated grasslands. The marine area is shallow, at most two metres deep in intertidal areas, and somewhat deeper in the river channel. It is bounded by privately owned land, the Codroy Valley Provincial Park, and the Gulf of Saint Lawrence. Nearby are the Grand Codroy and Little Codroy rivers, which are popular fishing destinations. The