Ham Street Woods

Site of Special Scientific Interest · 51.0820, 0.8486

Also within

Kent County

Condition (Natural England)

Favourable (2) Unfavourable Declining (1) Unfavourable Recovering (1)
UnitFeatureConditionArea (ha)Assessed
TQ996352 Favourable 3.46 2016-09-08
TR005351 Favourable 43.0 2021-10-06
TR009341 Unfavourable Declining 97.23 2023-03-21
TR016340 Unfavourable Recovering 31.47 2009-01-13

Birds & fish recorded

Birds

SpeciesSeason
nightingale Breeding
sparrowhawk Breeding
spotted flycatcher Breeding

Description

Area, 172.2 ha. 425.5 ac. Description This site forms a nationally important representative of its main woodland type and includes a series of broadleaved woodlands to the north east of Ham Street village. It supports outstanding bird and invertebrate communities. Centuries of traditional management in British woodlands have resulted in semi natural 'ancient' more than 400 years old woodland rich in characteristic plant and animal species. During recent decades modern forestry especially coniferisation, development and conversion to agriculture have led to the loss of much of this natural diversity and richly wooded areas such as this part of the Weald are now rare. This site lies on the edge of a plateau of sands and clays which is cut into by a number of small valleys. The higher parts of the site have acidic soils, supporting woodland mainly dominated by pedunculate and sessile oaks Quercus robur and Q. petraea, downy and silver birches Betula pubescens and B. pendula and hornbeam Carpinus betulus; other trees include wild cherry Prunus avium, wild service Sorbus torminalisan aspen Populus tremula. The ground vegetation includes bracken Pteridium aquilinum, honeysuckle Lonicera periclymenum, wood anemone Anemone nemorosa, bluebell Hyacinthoides non-scripta and in the most acidic areas ling heather Calluna vulgaris, gorse Ulex europaeus and tormentil Potentilla erecta. The soil of the valley sides is damper and more nutrient rich and here the woodland also includes ash Fraxinus excelsior, hazel Corylus avellana, hawthorn Crataegus monogyna, midland hawthorn Crataegus laevigata and in the wettest areas alder Alnus glutinosa. The ground vegetation is often dominated by dog’s mercury Mercurialis perennis and includes greater butterfly orchid Platanthera chlorantha and early purple orchid Orchis mascula. Most of the site has been managed in the past as coppice with standards and in parts the coppice is still cut regularly on rotation. This allows plants such as bluebell, primrose Primula vulgaris and wood anemone to flourish and plants of open areas such as golden rod Solidago virgaurea and heath cudweed Gnaphthalium sylvaticum to colonise. The complex structure of the woodland provides a wealth of microhabitats which together support a large number of specialised and oftenscarce or rare invertebrates. A particularly rich invertebrate fauna is associated with dead and rotting wood and also with wet areas within pools, woodland and shaded streams. Twelve scarce or rare dead wood species are known to occur, including the nationally rare beetle Tomoxiabi guttata; species associated with wet areas include a rare fly Anthomyza bifasciata which breeds in the seed heads of lesser reed mace Typha angustifolia in forest ponds, as well as two scarce dragonflies, and s carce species of fly, water beetle and lacewing. Recently coppiced open areas and rides support a number of scarce species, in particular those associated with aspen. The site supports many breeding bird species characteristic of woodland. These include common species such as treecreeper Certhia familiaris, spotted flycatcher Muscicapa striata and redpoll Carduelis flammea as well as less common ones such as nightingale Luscinia megarhynchos, hawfinch Coccothraustes coccothraustes and sparrowhawk Accipiter nisus. * 'A Nature Conservation Review' Edited by D A Ratcliffe, 1977 Cambridge.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
treecreeper Certhia familiaris LC (Breeding) bird-creeper certhiidae
hawfinch Coccothraustes coccothraustes EN (Breeding) bird-finch fringillidae
sparrowhawk Accipiter nisus NT (Breeding) bird-hawk falconidae
nightingale Luscinia megarhynchos VU (Breeding) bird-robin muscicapidae
spotted flycatcher Muscicapa striata LC (Breeding) bird-robin muscicapidae
redpoll Carduelis flammea Not listed in GB list bird-warbler fringillidae
lesser bulrush Typha angustifolia LC bulrush typhaceae
bracken Pteridium aquilinum LC fern dennstaedtiaceae
fly Anthomyza bifasciata Not listed in GB list fly anthomyzidae
wood anemone Anemone nemorosa LC herb ranunculaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
honeysuckle Lonicera periclymenum LC herb caprifoliaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
early purple orchid Orchis mascula LC herb orchidaceae
greater butterfly orchid Platanthera chlorantha NT herb orchidaceae
tormentil Potentilla erecta LC herb rosaceae
primrose Primula vulgaris LC herb primulaceae
goldenrod Solidago virgaurea VU herb asteraceae
midland hawthorn Crataegus laevigata LC shrub rosaceae
hawthorn Crataegus monogyna LC shrub rosaceae
gorse Ulex europaeus LC shrub leguminosae
bell heather or ling Calluna vulgaris NT shrub dwarf ericaceae
alder Alnus glutinosa LC tree salicaceae
downy birch Betula pubescens LC tree betulaceae
hornbeam Carpinus betulus LC tree betulaceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
aspen Populus tremula LC tree salicaceae
wild cherry Prunus avium LC tree rosaceae
common oak Quercus robur LC tree fagaceae

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.

SpeciesStatusVia host-plant
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Figure of eight
Diloba caeruleocephala
Endangered Crataegus spp., Prunus spp.
Dark bordered beauty
Epione vespertaria
Endangered Populus tremula
The lappet
Gastropacha quercifolia
Endangered Crataegus monogyna, Prunus spp.
Duke of Burgundy
Hamearis lucina
Endangered Primula vulgaris
Shoulder-striped clover
Heliothis maritima
Endangered Calluna vulgaris
Scarce vapourer
Orgyia recens
Endangered Alnus glutinosa, Betula spp., Corylus avellana, Crataegus spp., Quercus spp.
Mouse moth
Amphipyra tragopoginis
Vulnerable Crataegus spp.
The sprawler
Asteroscopus sphinx
Vulnerable Betula spp., Corylus avellana, Crataegus spp., Fraxinus excelsior, Populus spp., Prunus spp., Quercus spp.
Broom moth
Ceramica pisi
Vulnerable Betula spp., Calluna vulgaris, Pteridium aquilinum
Scarce chocolate-tip
Clostera anachoreta
Vulnerable Populus spp., Populus tremula
Mottled umber
Erannis defoliaria
Vulnerable Betula spp., Carpinus betulus, Corylus avellana, Crataegus spp., Lonicera periclymenum, Populus tremula, Quercus spp.
Marsh fritillary
Euphydryas aurinia
Vulnerable Lonicera periclymenum
Satyr pug
Eupithecia satyrata
Vulnerable Calluna vulgaris
White admiral
Limenitis camilla
Vulnerable Lonicera periclymenum
True lover's knot
Lycophotia porphyrea
Vulnerable Calluna vulgaris
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Crataegus monogyna, Prunus spp., Quercus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Alnus glutinosa, Betula pubescens, Corylus avellana, Crataegus laevigata, Crataegus monogyna, Fraxinus excelsior, Populus spp., Quercus spp.
Silver studded blue
Plebejus argus
Vulnerable Calluna vulgaris, Ulex spp.
Grizzled skipper
Pyrgus malvae
Vulnerable Potentilla erecta
Lead belle
Scotopteryx mucronata
Vulnerable Ulex europaeus
Early moth
Theria primaria
Vulnerable Crataegus laevigata, Crataegus monogyna, Quercus spp.
Pale eggar
Trichiura crataegi
Vulnerable Betula spp., Calluna vulgaris, Corylus avellana, Crataegus monogyna, Populus spp., Quercus spp.
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
No common name
Zeugophora turneri
Vulnerable Populus tremula
Flounced chestnut
Agrochola helvola
Near Threatened Betula spp., Calluna vulgaris, Crataegus monogyna, Quercus spp.
Beaded chestnut
Agrochola lychnidis
Near Threatened Crataegus monogyna
Grey chi
Antitype chi
Near Threatened Crataegus monogyna
Purple emperor
Apatura iris
Near Threatened Populus tremula
Garden tiger
Arctia caja
Near Threatened Pteridium aquilinum
Minor shoulder-knot
Brachylomia viminalis
Near Threatened Populus tremula
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.
Dingy mocha
Cyclophora pendularia
Near Threatened Alnus glutinosa
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 pubescens
Large thorn
Ennomos autumnaria
Near Threatened Alnus glutinosa, Betula spp., Corylus avellana, Crataegus spp., Populus spp., Prunus spp., Quercus spp.
September thorn
Ennomos erosaria
Near Threatened Betula spp., Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
Autumnal rustic
Eugnorisma glareosa
Near Threatened Betula spp., Calluna vulgaris, Hyacinthoides non-scripta
Grey pug
Eupithecia subfuscata
Near Threatened Crataegus monogyna, Populus tremula, Solidago virgaurea
White-spotted pug
Eupithecia tripunctaria
Near Threatened Solidago virgaurea
Double dart
Graphiphora augur
Near Threatened Betula spp., Crataegus spp., Quercus spp.
Weaver's wave
Idaea contiguaria
Near Threatened Calluna vulgaris
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 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

W25 — Bracken scrub

Pteridium aquilinum-Rubus fruticosus underscrub

Matches 10 species from the description above: Anemone nemorosa, Crataegus monogyna, Fraxinus excelsior, Hyacinthoides non-scripta, Lonicera periclymenum, Mercurialis perennis, Potentilla erecta, Pteridium aquilinum, Quercus robur, Ulex europaeus

Hedera helix, Acer pseudoplatanus, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Sambucus nigra, Ulex europaeus, Crataegus monogyna, Prunus spinosa, Luzula multiflora, Mnium hornum, Brachythecium rutabulum, Kindbergia praelonga, Angelica sylvestris, Conopodium majus, Heracleum sphondylium, Arum maculatum, Cirsium arvense, Lonicera periclymenum, Silene dioica, Stellaria holostea, Mercurialis perennis, Geranium robertianum, Glechoma hederacea, Teucrium scorodonia, Hyacinthoides non-scripta, Chamerion angustifolium, Circaea lutetiana, Digitalis purpurea, Rumex acetosa, Anemone nemorosa, Ficaria verna, Potentilla erecta, Rosa arvensis, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Galium mollugo sens.lat., Galium saxatile, Urtica dioica, Viola riviniana, Agrostis capillaris, Anthoxanthum odoratum, Arrhenatherum elatius, Dactylis glomerata, Festuca rubra, Holcus lanatus, Holcus mollis, Poa trivialis, Pteridium aquilinum, Dryopteris dilatata, Dryopteris filix-mas