Chiddingfold Forest

Also within

Surrey CountyWest Sussex County Surrey Hills Scenic Area

Condition (Natural England)

Unit	Feature	Condition	Area (ha)	Assessed
SU977337	—	Unfavourable Recovering	16.97	2009-03-30
SU979356	—	Favourable	3.73	2009-03-30
SU980343	—	Unfavourable Recovering	24.88	2009-03-30
SU980352	—	Unfavourable Recovering	25.92	2009-03-30
SU981332	—	Unfavourable Recovering	9.24	2009-03-30
SU982326	—	Unfavourable Recovering	32.95	2009-03-30
SU984339	—	Unfavourable Recovering	24.88	2009-03-30
SU986326	—	Unfavourable Recovering	15.62	2009-03-30
SU986338	—	Favourable	16.76	2009-03-30
SU986359	—	Favourable	8.3	2009-03-30
SU987359	—	Unfavourable Recovering	18.68	2009-03-30
SU988355	—	Favourable	6.3	2009-03-30
SU991309	—	Unfavourable Recovering	98.7	2009-03-30
SU991340	—	Favourable	16.76	2009-03-30
SU992320	—	Unfavourable Recovering	19.54	2009-03-30
SU992347	—	Unfavourable Recovering	20.93	2009-03-30
SU995315	—	Unfavourable Recovering	12.98	2009-03-30
SU997319	—	Unfavourable Recovering	12.98	2009-03-30
TQ000335	—	Unfavourable Recovering	87.2	2009-03-30
TQ007326	—	Unfavourable Recovering	50.4	2009-03-30
TQ015323	—	Unfavourable Recovering	50.4	2009-03-30
TQ017333	—	Unfavourable Recovering	17.98	2009-03-30
TQ018342	—	Unfavourable Recovering	32.35	2009-03-30
TQ022350	—	Favourable	6.25	2009-03-30
TQ025348	—	Unfavourable Recovering	16.82	2009-03-30

Habitats

Ancient woodland, Bracken scrub, Coppiced woodland, Fast flowing river and stream, Mixed scrub, Montane scrub

Geology & landscape

Rock Type: Limestone

Birds & fish recorded

Birds

Species	Season
nightingale	Breeding
sparrowhawk	Breeding

Description

Description Chiddingfold Forest consists of a number of areas of woodland which together form the largest more or less continuous area of oak woods on the Weald Clay. It consists of a mixture of woodland types ranging from ancient oak woodland to coniferous plantation and includes many semi natural types of woodland supporting a wide range of floristic communities. Many of the streams on the site cut deep into the clay and support a relict gill flora and fauna. The variety of woodland types, the gills and the well maintained rides provide habitats for a rich variety of insects and the site supports many nationally rare invertebrates and a number of regionally scarce bryophytes and lichens. The site is also noted for its diverse community of breeding birds. The forest lies mainly on the Weald Clay which gives rise to neutral to slightly acidic soils, but there are parts, particularly in the gills, which are more basic lime rich with local outcrops of Paludina Limestone. Some of the higher parts are more acidic; these tend to have more silty or sandy soils and heathland species occur on rides in these areas. The site is linked to other woodland areas and forms part of a much larger, but discontinuous, area of forest. The importance of the site principally rests on the variety of woodland types present which provide a complex mosaic of habitats. The oldest semi natural broadleaf areas are dominated by sessile oak Quercus petraea and hornbeam Carpinus betulus, with hazel Corylus avellana forming the bulk of the shrub layer with occasional holly Ilex aquifolium and hawthorn Crataegus monogyna. Silver birch Betula pendula is found in dryer areas. The herb layer is composed of such species as bluebell Hyacinthoides non-scripta, enchanter’s nightshade Circaea lutetiana and honeysuckle Lonicera periclymenum. Other areas are dominated by pedunculate oak Quercus robur and ash Fraxinus excelsior along with some beech Fagus sylvatica over hazel coppice and hawthorn, or by pedunculate oak, hornbeam, silver birch and hazel. On permanently damp ground near streams mature ash is occasionally dominant over hazel coppice with a dense ground flora of false brome Brachypodium sylvaticum, opposite leaved golden saxifrage Chrysosplenium oppositifolium, bluebell and bugle Ajuga reptans. Good specimens of the wild service tree Sorbus torminalis grow in several of the constituent woodlands. The greater butterfly orchid Platanthera chlorantha is found in Kingspark, Ashpark and Sidney Woods. In other parts the forest consists of various combinations of sessile oak, pedunculate oak, birch and hazel forming typical lowland woodland communities with a good ground flora. Interspersed with these and the preceding woodland types, are considerable areas of coniferous plantation consisting of Scot's pine Pinus sylvestris, Corsican pine Pinus nigra subsp. laricio, Norway spruce Picea abies, western hemlock Tsuga heterophylla and others. These plantations are usually dark and have ground floras limited to a few common mosses. The rides through them and the ride fringes, however, are often floristically and entomologically rich. The gills, which are found in several parts of the forest support a flora often characteristic of ancient woodlands. The tree layer is dominated by alder Alnus glutinosa, aspen Populus tremula, ash and downy birch Betula pubescens overlying a rich ground flora of both vascular plants and bryophytes which flourish in the damp conditions. The well developed and well maintained ride system supports a good diversity of plants and insects. False brome, common bent Agrostis capillaris and creeping bent Agrostis stolonifera dominate the grass species but other herbs vary with local conditions. Field horsetail Equisetum arvense, betony Betonica officinalis and heather Calluna vulgaris are locally abundant on drier ground and common spotted orchid Dactylorhiza fuchsii and broad leaved helleborine Epipactis helleborine are also found. The wetter rides support alternate leaved golden saxifrage Chrysosplenium alternifolium, water mint Mentha aquatica, lesser skullcap Scutellaria minor and soft rush Juncus effusus. The woodland along the sides of a number of the rides has been sufficiently disturbed to lead to the development of a fairly dense hazel birch scrub along with occasional aspen Populus tremula, grey willow Salix cinerea, goat willow Salix caprea, blackthorn Prunus spinosa and dogwood Cornus sanguinea. A few mature pedunculate oak standards have been left. Also included are a small number of recently felled areas which are reverting to low scrub. These are dominated by grey willow, hazel, bracken Pteridium aquilinum and bramble Rubus fruticosus. Along with the rides these areas provide good invertebrate habitats. The site generally is noted for its invertebrate interest, particularly Lepidoptera butterflies and moths and Coleoptera beetles. Over 500 species of Lepidoptera have been recorded and these include many rarities. The large tortoiseshell Nymphalis polychloros RDG, Endangered* has been recorded from the Kingspark and Ash Wood areas. The rare moths the rest harrow Aplasta ononaria RDB, Rare* and the orange upperwing Jodia croceago provisionally RDB, Rare* are found at several sites. Many species of Coleoptera have been recorded and these include the two spot wood borer Agrilus biguttatus RDB, Vulnerable*, which is found in thick oak bark and is associated only with ancient woodlands, the pollen beetle Mesosa nebulosa, which is found on dry branches of deciduous trees and the gallery forming beetle Xyleborus dispar both RDG, Rare*. Diptera present include Cheilosia carbonaria and Microdon eggeriboth RDB, Rare* and a parasite of leaf hoppers Nephrocerus scutellatus RDB, Endangered*. The woodland rides enable these invertebrate communities to thrive and the areas of scrub are utilised for breeding and larval development. The Chiddingfold Forest area is noted for its ornithological interest due to its large size, its relatively undisturbed nature and the diversity of woodland types. It supports a rich woodland bird community which includes breeding sparrowhawk Accipiter nisus, long eared owl Asio otus, the lesser spotted woodpecker Dryobates minor, nightingale Luscinia megarhynchos, hawfinch Coccothraustes coccothraustes, and two very rare birds. The abundance of rotting wood, the damp gill areas, the long disused section of the Arun and Wey Canal in Sidney Wood and other damp areas support a rich variety of bryophytes. Parts of the site White Beech, Pockford for example have well over 100 species recorded from them. A number of regionally rare species occur, such as Dicranum flagellare, which grows on rotting stumps and Oxyrrhynchium speciosum. There are several locally rare species including Brachythecium plumosum and Climacium dendroides which grow characteristically around the bases of trees in running water and these, therefore, are found in the gills. Species typical of ancient woodland such as Rhytidiadelphus loreus are also found. NOTE* Nationally rare species are listed in the relevant Red Data Book RDB, two of which have been published, ‘British Red Data Book 1, Vascular Plants’ and ‘British Red Data Book 2, Insects’. The three RDB categories, Rare, Vulnerable and Endangered indicate increasing degrees of threat of extinction in Britain.

Species mentioned

Show the 55 species mentioned in the description, with red-list status ▾

Insects to look out for

These moths, butterflies and beetles are known to feed on plants recorded at this site, and carry a notable UK conservation status — but a host-plant being present doesn't mean the insect has actually been recorded here. Treat this as "worth watching for," not a confirmed sighting.

Species	Status	Via host-plant
Chequered skipper Carterocephalus palaemon	Endangered	Brachypodium sylvaticum
Oak lutestring Cymatophorina diluta	Endangered	Quercus petraea, Quercus robur
Figure of eight Diloba caeruleocephala	Endangered	Crataegus spp., Prunus spinosa, Prunus spp.
Dark bordered beauty Epione vespertaria	Endangered	Populus tremula
The lappet Gastropacha quercifolia	Endangered	Crataegus monogyna, Prunus spinosa, Prunus spp., Salix spp.
Shoulder-striped clover Heliothis maritima	Endangered	Calluna vulgaris
No common name Melanophila acuminata	Endangered	Picea abies
Scarce vapourer Orgyia recens	Endangered	Alnus glutinosa, Betula spp., Corylus avellana, Crataegus spp., Fagus sylvatica, Prunus spinosa, Quercus spp., Rubus fruticosus, Salix spp.
Feathered beauty Peribatodes secundaria	Endangered	Picea abies
Black hairstreak Satyrium pruni	Endangered	Prunus spinosa
Mouse moth Amphipyra tragopoginis	Vulnerable	Crataegus spp., Salix caprea
The sprawler Asteroscopus sphinx	Vulnerable	Betula spp., Corylus avellana, Crataegus spp., Fagus sylvatica, Fraxinus excelsior, Populus spp., Prunus spinosa, Prunus spp., Quercus spp., Salix spp.
Broom moth Ceramica pisi	Vulnerable	Betula spp., Calluna vulgaris, Picea spp., Pinus spp., Pteridium aquilinum, Rubus fruticosus
Scarce chocolate-tip Clostera anachoreta	Vulnerable	Populus spp., Populus tremula, Salix cinerea, Salix spp.
Mottled umber Erannis defoliaria	Vulnerable	Betula spp., Carpinus betulus, Corylus avellana, Crataegus spp., Fagus sylvatica, Lonicera periclymenum, Populus tremula, Prunus spinosa, Quercus spp., Salix spp.
Marsh fritillary Euphydryas aurinia	Vulnerable	Lonicera periclymenum
Satyr pug Eupithecia satyrata	Vulnerable	Calluna vulgaris, Salix spp.
Grayling Hipparchia semele	Vulnerable	Brachypodium sylvaticum
White admiral Limenitis camilla	Vulnerable	Lonicera periclymenum
True lover's knot Lycophotia porphyrea	Vulnerable	Calluna vulgaris
The lackey Malacosoma neustria	Vulnerable	Betula pendula, Corylus avellana, Crataegus monogyna, Prunus spinosa, Prunus spp., Quercus spp., Rubus fruticosus, Salix spp.
Pale brindled Phigalia pilosaria	Vulnerable	Alnus glutinosa, Betula pendula, Betula pubescens, Cornus sanguinea, Corylus avellana, Crataegus monogyna, Fraxinus excelsior, Populus spp., Prunus spinosa, Quercus spp., Salix caprea
Silver studded blue Plebejus argus	Vulnerable	Calluna vulgaris
Grizzled skipper Pyrgus malvae	Vulnerable	Rubus fruticosus
Brown hairstreak Thecla betulae	Vulnerable	Prunus spinosa
Early moth Theria primaria	Vulnerable	Crataegus monogyna, Prunus spinosa, Quercus spp.
Pale eggar Trichiura crataegi	Vulnerable	Betula spp., Calluna vulgaris, Corylus avellana, Crataegus monogyna, Populus spp., Prunus spinosa, Quercus spp., Rubus fruticosus, Salix spp.
Oak hook-tip Watsonalla binaria	Vulnerable	Betula pendula, Quercus petraea, Quercus robur
No common name Zeugophora turneri	Vulnerable	Populus tremula
Flounced chestnut Agrochola helvola	Near Threatened	Betula spp., Calluna vulgaris, Crataegus monogyna, Quercus spp., Salix spp.
Beaded chestnut Agrochola lychnidis	Near Threatened	Crataegus monogyna, Salix spp.
Grey chi Antitype chi	Near Threatened	Crataegus monogyna, Mentha spp., Salix caprea
Purple emperor Apatura iris	Near Threatened	Populus tremula, Salix caprea, Salix cinerea
Garden tiger Arctia caja	Near Threatened	Picea abies, Pinus sylvestris, Prunus spinosa, Pteridium aquilinum, Salix cinerea
Minor shoulder-knot Brachylomia viminalis	Near Threatened	Populus tremula, Salix caprea, Salix cinerea
Light crimson underwing Catocala promissa	Near Threatened	Quercus robur
Dark crimson underwing Catocala sponsa	Near Threatened	Quercus robur
The sallow Cirrhia icteritia	Near Threatened	Populus spp., Salix spp.
Small heath Coenonympha pamphilus	Near Threatened	Agrostis spp.
Dingy mocha Cyclophora pendularia	Near Threatened	Alnus glutinosa, Salix caprea, Salix cinerea
Pine-tree lappet Dendrolimus pini	Near Threatened	Pinus sylvestris
Heart moth Dicycla oo	Near Threatened	Quercus robur
Grey scalloped Dyscia fagaria	Near Threatened	Calluna vulgaris
Kentish glory Endromis versicolora	Near Threatened	Alnus glutinosa, Betula pendula, Betula pubescens
Large thorn Ennomos autumnaria	Near Threatened	Alnus glutinosa, Betula spp., Corylus avellana, Crataegus spp., Populus spp., Prunus spinosa, Prunus spp., Quercus spp., Salix spp.
September thorn Ennomos erosaria	Near Threatened	Betula spp., Fagus sylvatica, Quercus spp.
Dusky thorn Ennomos fuscantaria	Near Threatened	Fraxinus excelsior
Autumnal rustic Eugnorisma glareosa	Near Threatened	Betula spp., Calluna vulgaris, Hyacinthoides non-scripta
Larch pug Eupithecia lariciata	Near Threatened	Picea abies
Grey pug Eupithecia subfuscata	Near Threatened	Betonica officinalis, Crataegus monogyna, Populus tremula, Prunus spinosa, Salix spp.
Double dart Graphiphora augur	Near Threatened	Betula spp., Crataegus spp., Prunus spinosa, Quercus spp., Salix spp.
Weaver's wave Idaea contiguaria	Near Threatened	Calluna vulgaris
Wall Lasiommata megera	Near Threatened	Agrostis spp., Brachypodium sylvaticum
Clay fan-foot Paracolax tristalis	Near Threatened	Quercus spp.
Common fan-foot Pechipogo strigilata	Near Threatened	Quercus robur
Frosted green Polyploca ridens	Near Threatened	Quercus petraea, Quercus robur
White prominent Leucodonta bicoloria	Regionally Extinct	Betula spp.

Host-plant data: Cook et al. (2025), Traits data for the butterflies and macro-moths of Great Britain and Ireland, 2024, UK Centre for Ecology & Hydrology / Butterfly Conservation; and Padovani et al. (2020), Database of Insects and their Food Plants (DBIF), UK Centre for Ecology & Hydrology (both Open Government Licence). Contains data supplied by UK Centre for Ecology & Hydrology.

Plant communities