Leg O Mutton is designated as a Local Nature Reserve, and is jointly managed by Richmond Council and the Leg O Mutton Advisory Group.
Cormorant, heron, tufted duck and even breeding common terns can be seen. Bats roost in the enormous Poplar trees dating back to the 1850s.
Leg O Mutton is accessible at all times. The nearest train station is Barnes Bridge, and the area is also served by the bus route 419.