Abbey River Tideway where there are two larger islands. It is much smaller than Canvey Island and the Isle of Sheppey and narrowly ahead of Andersey Island facing Abingdon-on-Thames, another market town with an abbey which had multiple medieval mills, another of note being Westminster Abbey, the island of which Thorney Island no longer exists. The outfall of the Abbey River is 400 m above Chertsey Bridge, into the weir pool of Chertsey Weir. The manmade strictly-considered "island" the bypass channel forms is outranked in size since the 2002 completion of the Jubilee River by the example containing Dorney and Eton, Berkshire.
Canvey Wick Canvey Wick Canvey Wick is a 93.2 hectare Site of Special Scientific Interest at the south-west corner of Canvey Island in Essex. It is owned by the Land Trust and managed by the Royal Society for the Protection of Birds and Buglife. The site was formerly an oil refinery, and has been transformed into an area of grazing marsh. It has a nationally important population of invertebrates, including 22 which are endangered Red Book species, and three which had been recorded as extinct in Britain. It also has a nationally important population of shrill carder bees. Scrub edges provide additional