The Surrey Hills is one of the most wooded AONBs, with almost 40% woodland cover, and woodland is perhaps now the defining feature of the Surrey Hills landscape. The woodland is diverse, including shaws, old coppice, wooded ghylls, parkland trees, small carrs and conifer plantations. Ancient semi-natural woodland has particular significance in terms of historic and nature conservation importance with 4564 hectares of Ancient Woodland, covering nearly 12% of the AONB. This is a fragment of what was once in the area but is still a significant amount of species-rich woodland.
The yew and box woodlands of the North Downs are of international importance. The Surrey Hills woodlands have been managed for centuries and hide a wealth of archaeological features. Today they are valued for nature conservation, timber production or recreational pursuits such as shooting, cycling or walking.