The island is covered in extensive woodland in the centre, made up of Scots pine with several small zones of heathland.

The island also has a large salt marsh and several small glades, as well as a beach area.

[1] The island is currently privately owned by Edward Iliffe, a multi-millionaire from Berkshire.

The Green Island Holiday Trust now conducts its activities at Holton Lee (near Upton).

Evidence suggests that at one point Green Island was twice its size and a major place of trading in southern England.