King's Copse

Site of Special Scientific Interest · 51.4314, -1.1718

Condition (Natural England)

Favourable (2)
UnitFeatureConditionArea (ha)Assessed
SU575704 Favourable 0.81 2009-05-01
SU576706 Favourable 12.91 2009-05-01

Description

Area, 13.82 hectares 34.16 ac Description An old coppiced woodland, predominantly on London Clay, but partly on Bagshot Beds and Reading Beds, situated on the south side of the valley of the River Pang. A small stream flows through the lower part of the site. The wood is on sloping ground, ranging from dry acid soils to wet peaty humus. The variation of slope and soil conditions gives rise to a complex intermingling of seven woodland stand types including neutral valley alder wood, wet ash/wych elm, wet ash/maple, acid hazel/oak and birch. Holly, aspen, wild cherry and crack willow are locally frequent, whilst beech, probably of planted origin, occurs on a knoll at the southern extremity. Although some exotic species have been introduced locally, the natural ground flora is rich, ranging from communities with abundant wood anemone Anemone nemorosa, woodsage Teucrium scorodonia, honeysuckle Lonicera periclymenum, bluebell Hyacinthoides non-scripta and tormentil Potentilla erecta on drier acid soil under oak, birch and hazel to flushed areas with sanicle Sanicula europaea, bugle Ajuga reptans, meadowsweet Filipendula ulmaria, figworts Scrophularia nodosa and S. aquatica, ragged-robin Silene flos-cuculi, golden saxifrage Chrysosplenium oppositifolium and sedges Carex sylvatica, Carex remota and C. strigosa. Stands of stinging nettle Urtica dioica and hemlock water dropwort Oenanthe crocata occur under alder and crack willow on nutrient enriched ground along the stream. Other locally abundant species include hairy wood rush Luzula pilosa, moschatel Adoxa moschatellina, wood spurge Euphorbia amygdaloides, primrose Primula vulgaris and violets Viola riviniana and Viola reichenbachiana. tutsan Hypericum androsaemum also occurs. The fauna of this wood may also prove interesting. As well as a good range of bird species, grass snakes Natrix natrix appear to be locally common and there is an active badger sett.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
moschatel Adoxa moschatellina LC herb adoxaceae
bugle Ajuga reptans LC herb lamiaceae
wood anemone Anemone nemorosa LC herb ranunculaceae
opposite-leaved golden- saxifrage Chrysosplenium oppositifolium LC herb saxifragaceae
wood spurge Euphorbia amygdaloides LC herb euphorbiaceae
meadow sweet Filipendula ulmaria LC herb rosaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
tutsan Hypericum androsaemum LC herb hypericaceae
honeysuckle Lonicera periclymenum LC herb caprifoliaceae
hemlock water-dropwort Oenanthe crocata LC herb apiaceae
tormentil Potentilla erecta LC herb rosaceae
primrose Primula vulgaris LC herb primulaceae
sanicle Sanicula europaea LC herb apiaceae
common figwort Scrophularia nodosa LC herb scrophulariaceae
ragged-robin Silene flos-cuculi LC herb carophyllaceae
wood sage Teucrium scorodonia LC herb lamiaceae
nettle Urtica dioica LC herb urticaceae
early dog violet Viola reichenbachiana LC herb violaceae
common dog violet Viola riviniana LC herb violaceae
grass snake Natrix natrix Not listed in GB list reptile lacertidae
hairy wood-rush Luzula pilosa LC rush juncaceae
remote sedge Carex remota LC sedge cyperaceae
wood sedge Carex sylvatica LC sedge cyperaceae

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
High brown fritillary
Fabriciana adippe
Critically Endangered Viola riviniana
Pearl-bordered fritillary
Boloria euphrosyne
Endangered Viola riviniana
Duke of Burgundy
Hamearis lucina
Endangered Primula vulgaris
Heath fritillary
Melitaea athalia
Endangered Teucrium scorodonia
Scarce vapourer
Orgyia recens
Endangered Filipendula ulmaria
Mottled umber
Erannis defoliaria
Vulnerable Lonicera periclymenum
Marsh fritillary
Euphydryas aurinia
Vulnerable Lonicera periclymenum
Satyr pug
Eupithecia satyrata
Vulnerable Filipendula ulmaria, Hypericum spp.
White admiral
Limenitis camilla
Vulnerable Lonicera periclymenum
Grizzled skipper
Pyrgus malvae
Vulnerable Potentilla erecta
Grey chi
Antitype chi
Near Threatened Urtica dioica
Garden tiger
Arctia caja
Near Threatened Urtica dioica
Small pearl-bordered
Boloria selene
Near Threatened Viola riviniana
Autumnal rustic
Eugnorisma glareosa
Near Threatened Hyacinthoides non-scripta

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

A14 — Fast flowing river and stream

Myriophyllum alterniflorum community

Isolepis fluitans, Juncus bulbosus, Fontinalis antipyretica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Lemna minor, Callitriche stagnalis, Littorella uniflora, Potamogeton filiformis, Potamogeton gramineus, Potamogeton natans, Ranunculus peltatus, Chara spp., Nitella hyalina

A17 — Chalk river and stream, Fast flowing river and stream

Ranunculus penicillatus ssp. pseudofluitans community

Berula erecta, Nasturtium officinale, Elodea canadensis, Lemna minor, Callitriche stagnalis, Veronica beccabunga, Polygonum amphibium, Polygonum hydropiper, Potamogeton crispus, Potamogeton pectinatus, Ranunculus penicillatus ssp. pseudofluitans

A18 — Fast flowing river and stream

Ranunculus fluitans community

Fontinalis antipyretica, Fontinalis squamosa var. curnowii, Myriophyllum alterniflorum, Myriophyllum spicatum, Elodea canadensis, Mentha aquatica, Lemna gibba, Lemna minor, Potamogeton perfoliatus, Ranunculus fluitans, Glyceria fluitans, Phalaris arundinacea

A9 — Fast flowing river and stream, Marginal and inundation, Pond ditch and canal, Sluggish river and stream

Potamogeton natans community

Schoenoplectus lacustris, Juncus bulbosus, Sparganium angustifolium, Sparganium erectum, Sparganium minimum, Alisma plantago-aquatica, Lobelia dortmanna, Equisetum fluviatile, Myriophyllum alterniflorum, Elodea canadensis, Lemna minor, Lemna trisulca, Nymphaea alba, Callitriche platycarpa, Callitriche stagnalis, Littorella uniflora, Potamogeton natans, Ranunculus trichophyllus, Glyceria fluitans, Chara subspinosa