Ham Lands is a 72-hectare Local Nature Reserve and Site of Metropolitan Importance for Nature Conservation in Ham in the London Borough of Richmond upon Thames and the Royal Borough of Kingston upon Thames. The area is very popular with walkers, nature lovers, and horse-riders. There is an unofficial off-road BMX track near Teddington Lock.
The site is a large area of grassland and scrub bordering the River Thames. The other boundary is mostly formed by Riverside Drive. The area is divided into two sections by the lagoon and Thames Young Mariners.
Wikipedia https://en.wikipedia.org/wiki/Ham_Lands
Coordinates 51°26'4.96" N -0°19'25.006" E