Thames Chase

Thames Chase is a community forest of 9842 hectares (24,320 acres/38 square miles) [1] located in 47 sites in London and Essex, England.

It has been managed as a community forest since 1990. The forest centre is located near Upminster and is surrounded by 56 hectares (140 acres) of new woodlands, meadows and ponds.

More information on the Wikipedia page