Penton Hook Island, Laleham near Staines, Surrey

In September 1997 OAU undertook a watching brief at Penton Hook Island during excavation of six test pits by the Environment Agency. The natural gravel core of the island was seen in all of the test pits, and their sections displayed overlying silts and clays, masked by a considerable dump of material derived from dredging operations over the years. None of the deposits sen produced any finds.