Definitions for "Ancient Woodland"
Areas that have had continuous woodland cover since at least AD1600 and have only been cleared sporadically for scrub and timber production.
Land which has been woodland since at least 1860 [source: General Roy military maps of Scotland].
An area of woodland that has had a continuous cover of native trees and plants since at least 1600 AD and in special circumstances semi-natural woods of post 1600 but pre 1900 origin.