Rowley Green Common is a six hectare Local Nature Reserve and a Site of Importance Metropolitan for Nature Conservation in Arkley, north London. It is owned by the London Borough of Barnet and according to the Natural England details page it is jointly managed by the Hertfordshire and Middlesex Wildlife Trust and the London Wildlife Trust, but as of August 2015 it is not on the list of reserves of either Trust. It is also registered common land. More information on the Wikipedia page [1].