King George's Fields is a 28 hectare Site of Borough Importance for Nature Conservation, Grade II, in Monken Hadley in the London Borough of Barnet. The site consists of a patchwork of fields, intersected by overgrown hedgerows, narrow strips of woodland and small streams. There are a number of magnificent old oaks, and breeding birds include sparrowhawk, stock dove, bullfinch, willow warbler and chaffinch. There are also a number of common butterflies and the uncommon chimney sweeper moth.