Chiddingfold Forest covers a block of woods spanning 840 hectares and lies to the South-East of Chiddingfold village. The woodlands form a core area within the West Weald Landscape Partnership Project which spans a broad swathe of countryside within the Surrey and West Sussex boundary. Small sections of the forest are also located within the South Downs National Park and the Surrey Hills Outstanding Area of Natural Beauty (ANOB). The wood contains a large proportion of broadleaved species including significant numbers of Oak, Birch and Ash trees.

A significant proportion of Chiddingfold is designated a Special Site of Scientific Interest (SSSI), approximately 502 hectares of the total 840 hectares spanned by the whole site. The SSSI areas occur in a fragmented arrangement and cover the predominantly Broadleaf woodlands.

Chiddingfold has a rich birdlife with good populations of British Woodland birds including the Marsh Tit and Lesser-spotted Woodpecker. During the summer migrant passerines such as Blackcaps and Garden Warblers are joined by the ultimate songbird, the Nightingale and the wood has recently been colonised by the Firecrest. Other residents are the declining Turtle Dove and Honey Buzzard has occurred in recent years.

Chiddingfold's rides are amazing places for woodland butterflies and this is a national stronghold of the rare Wood White. Other species such as Grizzled Skipper, Dingy Skipper and Green Hairstreak are present in the spring. During the summer the Purple Emperor is present in good numbers along with healthy populations of White Admiral, Silver-washed Fritillary, White-letter Hairstreak and Purple Hairstreak. Important Moth species include the Drab Lopper and the day flying, Broad-bordered Bee Hawk-moth.

The Forest also supports a wide variety of bat species with both barbastelle (Barbastella barbastellus) and Bechstein’s bat (Myotis bechsteinii) exploiting the diverse woodland habitats for dispersal and foraging.