From the Wikipedia page [1]
Highgate Wood is a 28 hectare (70 acre) area of ancient woodland in North London, lying between East Finchley, Highgate Village, and Muswell Hill. It was originally part of the ancient Forest of Middlesex which covered much of London, Hertfordshire and Essex and was mentioned in the Domesday Book. It lies in the London Borough of Haringey, but is owned and managed by the City of London Corporation.
The City of London Corporation page is [2].