| Site | Photograph | Area[b] | Location[b] | Access[b] | Classifications | Description |
| Abberton Reservoir[5] |  | 24.2 hectares (60 acres) | Colchester
51°49′23″N 0°50′46″E / 51.823°N 0.846°E / 51.823; 0.846 (Abberton Reservoir)
TL 962 177 | YES | EWTVC,[5] NCR,[6] Ramsar,[7] SPA,[8] SSSI[9] | The EWT runs the visitor centre for Essex and Suffolk Water's 716 hectare reservoir, which is internationally important for wintering wigeon, and nationally important for twelve other bird species. The small area run by the trust has new woodland with a bird hide, and there are two more hides over the reservoir.[5][9] |
| Abbotts Hall Farm[10] |  | 282.0 hectares (697 acres) | Colchester
51°47′46″N 0°50′42″E / 51.796°N 0.845°E / 51.796; 0.845 (Abbotts Hall Farm)
TL 963 146 | PP | NNR,[11] Ramsar,[12] SAC,[13] SM,[14] SPA,[15] SSSI[16] | This is the headquarters of the EWT, as well as a working farm which is managed to encourage wildlife. New seawalls have been built to create marshland, which has many fish, providing food for migrating birds. A new lake has also been constructed, and fields provide additional habitats for fauna such as skylarks.[10] |
| Aubrey Buxton[17] |  | 9.7 hectares (24 acres) | Elsenham
51°54′54″N 0°12′36″E / 51.915°N 0.210°E / 51.915; 0.210 (Aubrey Buxton)
TL 521 264 | YES | | The site is woodland on a sandy and gravel soil, with meadows and six man-made ponds. Grassland plants include wild strawberries and common spotted orchids. There are birds such as nuthatches and woodpeckers. Black poplars, which are the county's rarest native tree, have been planted to replace trees lost to storm damage.[17] |
| Bedfords Park[18] |  | 87.0 hectares (215 acres) | Havering-atte-Bower
51°36′29″N 0°11′38″E / 51.608°N 0.194°E / 51.608; 0.194 (Bedfords Park)
TQ 520 922 | YES | EWTVC,[18] LNR[19] | The London Borough of Havering owns and manages Bedfords Park, while the EWT manages the visitor centre.[18] The site has wildflower meadows, diverse woodland, several ponds and a lake, as well as a herd of red deer. There are flora such as cuckoo flowers and ragged robins.[19] |
| Belfairs Woodland Centre[20] |  | 36.8 hectares (91 acres)[21] | Leigh-on-Sea
51°33′22″N 0°38′24″E / 51.556°N 0.640°E / 51.556; 0.640 (Belfairs Woodland Centre)
TQ 831 874 | YES | EWTVC,[20] LNR,[22] SSSI[21] | This is a small remnant of the ancient Hadleigh Great Wood. It is coppiced oak woodland on sands, gravels and clay, and one of the largest areas of old woodland in the south of the county. Plants include the rare broad-leaved helleborine.[21] |
| Blue House Farm[23] |  | 242.8 hectares (600 acres) | North Fambridge
51°38′31″N 0°40′52″E / 51.642°N 0.681°E / 51.642; 0.681 (Blue House Farm)
TQ 856 971 | FP | SSSI[24] | This site has been grassland for the last 100 years, and it is grazed by cows and sheep. The site has ponds, creeks and ditches, and a 20 hectare field is flooded during the winter, providing feeding grounds for large numbers of wildfowl and wading birds, including around 2000 Brent geese.[23] |
| Bradwell Shell Bank[25] |  | N/Av | Bradwell-on-Sea
51°44′06″N 0°56′46″E / 51.735°N 0.946°E / 51.735; 0.946 (Bradwell Shell Bank)
TM 035 081 | PP | NCR,[26][27] Ramsar,[28] SAC,[25] SPA,[25] SSSI[25] | The site is a large area of saltmarsh, together with some 12 hectares (30 acres) of shell bank. Birds which breed on the shell bank include little terns and ringed plovers, and there are many species on the saltmarsh. There are flora such as yellow-horned poppies, grass-leaved oraches and rock samphires.[25] |
| Brookes Nature Reserve[29] |  | 24.3 hectares (60 acres) | Halstead
51°54′36″N 0°37′37″E / 51.910°N 0.627°E / 51.910; 0.627 (Brookes Nature Reserve)
TL 808 268 | YES | SSSI[29] | The site is coppice woodland on chalky boulder clay. There is a variety of woodlands types, such as wet ash and maple, pedunculate Oak and hornbeam, and acid birch, ash and lime. The ground flora includes species which are locally uncommon, including greater butterfly-orchid and bird's-nest orchid.[30] There is also a variety of butterflies, and ponds which have frogs and newts.[29] |
| Chafford Gorges Nature Park[31] |  | 80.9 hectares (200 acres) | Grays
51°29′24″N 0°17′10″E / 51.490°N 0.286°E / 51.490; 0.286 (Chafford Gorges)
TQ 588 793 | YES | EWTVC,[31] GCR,[32] SSSI[31][33] | This site has lakes, woodland and meadows. There are common spotted, bee and bird's nest orchids, and long-eared and common pipistrelle bats.[31] Two areas are Sites of Special Scientific Interest: Grays Thurrock Chalk Pit has been designated for its biological interest, and Lion Pit for geological interest.[33] |
| Chigborough Lakes[34] |  | 18.6 hectares (46 acres) | Maldon
51°44′42″N 0°43′01″E / 51.745°N 0.717°E / 51.745; 0.717 (Chigborough Lakes)
TL 876 086 | YES | | This area of former gravel pits has diverse habitats, lakes, marshes, willow carr, grazed grassland and scrub. More than 120 species of bird have been recorded, out of which more than 40 have bred, including great crested grebes, grey herons and little egrets. There are eleven species of willow and several of orchid.[34] |
| Cockaynes Wood[35] |  | 20.2 hectares (50 acres) | Wivenhoe
51°51′22″N 0°58′52″E / 51.856°N 0.981°E / 51.856; 0.981 (Cockaynes Wood)
TM 054 217 | PP | | Cockaynes Wood is ancient, and was listed in the Domesday Book. The nature reserve also includes Villa Wood and more open areas, with heathland, meadows, and water-filled former quarries. Wildlife includes a rare weevil and birds including barn owls.[35] |
| Colne Point[36] |  | 276.4 hectares (683 acres) | St Osyth
51°46′16″N 1°03′14″E / 51.771°N 1.054°E / 51.771; 1.054 (Colne Point)
TM 108 125 | YES | NCR,[27] NNR,[37] Ramsar,[38] SSSI[37] | The site is shingle surrounding saltmarsh, and Ray Creek flows through it. It is a breeding ground for many birds, and a feeding area for migrants. There are many invertebrates which are on the IUCN Red List of Threatened Species, and flora include the nationally rare golden samphire and small cord-grass.[36] |
| Copperas Wood[39] |  | 13.8 hectares (34 acres) | Harwich
51°56′20″N 1°12′00″E / 51.939°N 1.200°E / 51.939; 1.200 (Copperas Wood)
TM 200 315 | YES | SSSI[40] | This is ancient sweet chestnut and hornbeam coppice. The Great Storm of 1987 caused severe damage, and some areas have been left to regenerate naturally. Around 100 bird species have been observed, out of which 43 are nesting, and there are 23 butterfly species and over 300 of moths.[39] |
| Cranham Marsh[41] |  | 13.0 hectares (32 acres) | Cranham
51°32′49″N 0°15′29″E / 51.547°N 0.258°E / 51.547; 0.258 (Cranham Marsh)
TQ 567 856 | YES | LNR[42] | The habitats on the site are woodland, wet meadow, marsh and fen. There are three small woods, including Spring Wood, which has species indicative of ancient woodland. Insects include a rare bee, Macropis europaea, and 23 species of butterfly have been recorded.[43] |
| Crowsheath Wood[44] |  | 8.1 hectares (20 acres) | Downham
51°38′28″N 0°29′38″E / 51.641°N 0.494°E / 51.641; 0.494 (Crowsheath Wood)
TQ 727 964 | YES | | The wood has many mature oak trees, with coppiced areas mainly of hornbeam, together with other trees such as ash and field maple. There are ponds in the centre of the site where lesser spearwort grows. Flowers include bluebell and wood anemone, and there are birds typical of broadleaved woodland.[44] |
| Danbury Ridge[45] |  | 101.2 hectares (250 acres) | Danbury
51°43′44″N 0°35′24″E / 51.729°N 0.590°E / 51.729; 0.590 (Danbury Ridge)
TL 790 065 | YES | SSSI[46][47] | The site includes several areas in two different SSSIs, Danbury Common[46] and Woodham Walter Common.[47] Habitats include woodland, a bog area which has sphagnum moss, marsh, a pond and heathland. Dormice are common in the reserves.[45] |
| Fingringhoe Wick[4] |  | 48.6 hectares (120 acres) | Fingringhoe
51°50′06″N 0°58′16″E / 51.835°N 0.971°E / 51.835; 0.971 (Fingringhoe Wick)
TM 048 193 | YES | EWTVC,[4] NCR,[27] Ramsar,[48] SSSI[37] | These former gravel quarries were the Trust's first reserve, established in 1961. Habitats are the Colne Estuary, gorse heathland, grassland, reedbeds and ponds. There are nearly 200 species of birds and 350 of flowering plants, together with many dragonflies, damselflies and butterflies.[4] |
| Fobbing Marsh[49] |  | 75.7 hectares (187 acres) | Fobbing
51°32′02″N 0°29′42″E / 51.534°N 0.495°E / 51.534; 0.495 (Fobbing Marsh)
TQ 731 846 | YES | | The site is mainly grazing marshes, but there are also areas of rough grassland, saltmarsh, seawalls and reedbed. Flowering plants include hairy buttercup, knotted hedge-parsley and the nationally rare least lettuce. There are breeding birds such as corn buntings and yellow wagtails.[49] |
| Gernon Bushes[50] |  | 32.0 hectares (79 acres) | Epping
51°42′22″N 0°08′17″E / 51.706°N 0.138°E / 51.706; 0.138 (Gernon Bushes)
TL 478 030 | YES | SSSI,[51] NCR[52] | This site is ancient coppice, with old hornbeam pollards, and many ponds which were created for gravel extraction. There are areas of marsh with large patches of the unusual marsh fern, and other plants include marsh marigold and ragged robin.[50] |
| Great Holland Pits[53] |  | 16.2 hectares (40 acres) | Great Holland
51°49′34″N 1°11′49″E / 51.826°N 1.197°E / 51.826; 1.197 (Great Holland Pits)
TM 204 190 | YES | | This area of former gravel pits has grassland, ancient woodland, ponds and wet depressions. There are water birds such as kingfishers, coots and little grebes, and flowering plants include moschatels and carline thistles.[53] |
| Gunners Park and Shoebury Ranges[54] |  | 25.0 hectares (62 acres) | Shoeburyness
51°31′23″N 0°47′06″E / 51.523°N 0.785°E / 51.523; 0.785 (Gunners Park and Shoebury Ranges)
TQ 932 841 | PP | LNR,[55] SM,[56] SSSI[57] | Gunners Park, which is named for its former military use, has over twelve habitats, including coastal grassland and ancient sand dunes. Rare insects include sandwich click beetles, while there are unusual plants such as bulbous meadow-grass. There is a wide range of migrating birds.[54] |
| Hanningfield Reservoir[58] |  | 400 hectares (990 acres) | Chelmsford
51°38′46″N 0°29′31″E / 51.646°N 0.492°E / 51.646; 0.492 (Hanningfield Reservoir)
TQ 725 971 | YES | EWTVC,[58] SSSI[59] | The reservoir has a nationally important population of gadwalls, and it also has significant numbers of pochards, teal, tufted ducks and pintails. The chalk sludge lagoon has several unusual plants, and there is a rare moss Brachythecium mildeanum at the foot of the southern dam.[59] |
| Horndon Meadow[60] |  | 0.8 hectares (2.0 acres) | Stanford-le-Hope
51°32′24″N 0°24′36″E / 51.540°N 0.410°E / 51.540; 0.410 (Horndon Meadow)
TQ 672 851 | YES | | This site is an unimproved hay meadow, which has around eighty flower species, such as green-winged orchids, yellow rattles, musk mallows and black knapweeds. Other plants include adder's tongue ferns.[60] |
| Howlands Marsh[61] |  | 29.9 hectares (74 acres) | St Osyth
51°48′40″N 1°04′01″E / 51.811°N 1.067°E / 51.811; 1.067 (Howlands Marsh)
TM 115 169 | YES | NCR,[27] Ramsar,[38] SPA,[62] SSSI[37] | This site is marshy grassland, which is low lying and hummocky, and divided by water channels. There are also areas of saltmarsh, which have sea wormwood and golden samphire. Breeding birds include reed warblers, skylarks, lapwings and reed buntings.[61] |
| Hunsdon Mead[63][c] |  | 27.5 hectares (68 acres) | Harlow
51°46′59″N 0°03′32″E / 51.783°N 0.059°E / 51.783; 0.059 (Hunsdon Mead)
TL 421 114 | YES | SSSI[64] | This is unimproved grassland which is subject to winter flooding. Notable grass species include meadow brome and the quaking grass Briza media, and there are other unusual flora such as pepper saxifrage and green-winged orchid.[64] |
| Ingrebourne Valley[65] |  | 261 hectares (640 acres) | Hornchurch
51°31′48″N 0°12′29″E / 51.530°N 0.208°E / 51.530; 0.208 (Ingrebourne Valley)
TQ 532 835 | YES | EWTVC,[65] LNR,[66] SSSI[67] | The EWT manages the visitor centre for this site, which is run by Havering Council.[65] The site has a wide range of habitats, rough grassland, woodland, marshes, river, reedbeds and wet grazing. There are fauna such as great crested newts, slowworms and harvest mice.[67] |
| Iron Latch[68] |  | 4.3 hectares (11 acres) | Eight Ash Green
51°53′49″N 0°49′58″E / 51.897°N 0.8328°E / 51.897; 0.8328 (Iron Latch)
TL 950 259 | YES | | The site consists of areas of species-rich grassland and ash woodland. Bird's foot trefoil provides food for common blue butterflies, purple hairstreaks, and other butterflies. Nightingales nest in the trees and hedges.[68] |
| John Weston Nature Reserve[69] |  | 3.6 hectares (8.9 acres) | Walton-on-the-Naze
51°52′23″N 1°17′25″E / 51.873°N 1.2903°E / 51.873; 1.2903 (John Weston Nature Reserve)
TM 266 245 | YES | | This site is named after its former warden, who died in 1984. It has rough grassland, blackthorn and bramble scrub and four ponds. Nesting birds include the lesser and common whitethroat, and there are flora such as slender thistle, pepper saxifrage and fenugreek.[69] |
| Langdon Nature Reserve[70] |  | 210.0 hectares (519 acres) | Basildon
51°33′43″N 0°23′39″E / 51.562°N 0.3942°E / 51.562; 0.3942 (Langdon Nature Reserve)
TQ 660 875 | YES | EWTVC,[70] SSSI[71] | This site has a wildlife garden, woodland, meadows and lakes. Over 350 species of flowering plants have been recorded, and 30 butterflies including white admirals, green hairstreaks, marbled whites and grizzled skippers.[70] |
| Lexden Gathering Grounds[72] |  | 8.9 hectares (22 acres) | Colchester
51°53′35″N 0°51′20″E / 51.893°N 0.8555°E / 51.893; 0.8555 (Lexden Gathering Grounds)
TL 965 254 | YES | | The site is mainly woodland with some marsh, meadow and open rides. One area has semi-natural birch and ash woods, and the marsh has moschatel and mature hazel and alder coppice. There are badgers and foxes, and butterflies including common browns and small coppers.[72] |
| Lion Creek and Lower Raypits[73] |  | 65.2 hectares (161 acres) | Canewdon
51°37′08″N 0°46′34″E / 51.619°N 0.776°E / 51.619; 0.776 (Lion Creek and Lower Raypits)
TQ 923 948 | YES | SSSI[74][75] | The former creek has been cut off from the Crouch Estuary by a seawall, and it has salt marsh plants such as golden samphire and sea-spurrey. Lower Raypits has a variety of pasture, salt marsh and intertidal habitats, with nationally scarce plants such as beaked tasselweed, sea barley, grass vetchling and curved hard-grass. Invertebrates include Roesel's bush-cricket.[73] |
| Little Haven[76] |  | 37.2 hectares (92 acres) | Thundersley
51°34′16″N 0°36′27″E / 51.571°N 0.6075°E / 51.571; 0.6075 (Little Haven)
TQ 808 890 | YES | | This site has diverse habitats of woodland, meadows, scrub and hedges. The main trees are sessile oaks, hornbeams and sweet chestnut, and plants such as wood sorrel and are indicators of ancient woodland. The reserve is one of only 25 in the county where the rare heath fritillary is well established.[76] |
| Little Waltham Meadows[77] |  | 8.9 hectares (22 acres) | Little Waltham
51°46′44″N 0°28′54″E / 51.779°N 0.4818°E / 51.779; 0.4818 (Little Waltham Meadows)
TL 713 119 | YES | | The site is wet and dry meadows on the bank of the River Chelmer, which are grazed to restore them to their previous state. There are grassland plants such as saxifrage, bee orchids and yellow oat-grass. Tawny owls and sparrowhawks hunt in the meadows and ancient hedgerows.[77] |
| Maldon Wick[78] |  | 6.1 hectares (15 acres) | Maldon
51°43′12″N 0°39′55″E / 51.720°N 0.6653°E / 51.720; 0.6653 (Maldon Wick Meadow)
TL 842 057 | YES | | This is a 2.4-kilometre (1.5-mile) linear site along the route of the former railway line between Maldon and Woodham Ferrers, and it is mainly on embankment. There are many breeding birds, and 28 species of butterflies and 17 of dragonfly have been recorded. Flowering plants include moschatels and sweet violets.[78] |
| The Naze[79] |  | 45 hectares (110 acres) | Walton-on-the-Naze
51°52′05″N 1°17′17″E / 51.868°N 1.288°E / 51.868; 1.288 (The Naze)
TM 264 238 | YES | EWTVC,[79] GCR,[80] SSSI[81] | This coastal site has a variety of terrestrial and marine habitats, and many migrating and nesting birds, such as dark bellied brent geese, sedge warblers, barn owls and common whitethroats. The cliff is eroding at one to two metres a year.[79] |
| Newland Grove[82] |  | 3.2 hectares (7.9 acres) | Chelmsford
51°46′12″N 0°29′08″E / 51.770°N 0.4856°E / 51.770; 0.4856 (Newland Grove)
TL 716 108 | YES | | The site is rough grassland on the bank of the River Chelmer, with areas of woodland and thorn thicket. More than 230 plant species have been recorded, including St John's wort, hairy violet and musk mallow. Birds include several species of warbler, and 23 of butterflies.[82] |
| Oakfield Wood[83] |  | 2.8 hectares (6.9 acres) | Wrabness
51°56′24″N 1°09′04″E / 51.940°N 1.151°E / 51.940; 1.151 (Oakfield Wood)
TM 167 315 | YES | | This is former farmland which is being converted into a "green burial ground", overlooking the Stour Estuary. A native broadleaved tree is planted for each burial with a wooden plaque at the base. When the burial ground is full, it will be managed by the trust as a nature reserve.[83] |
| Oxley Meadow[84] |  | 3.2 hectares (7.9 acres) | Tiptree
51°48′04″N 0°46′44″E / 51.801°N 0.779°E / 51.801; 0.779 (Oxley Meadow)
TL 917 149 | YES | | The site has two meadows which are rich in flowers, including many green winged orchids and adderstongue ferns. There is also a variety of common butterfly species, and hedgerows provide nesting sites for birds such as the lesser whitethroat.[84] |
| Phyllis Currie[85] |  | 8.9 hectares (22 acres) | Great Leighs
51°50′10″N 0°29′56″E / 51.836°N 0.499°E / 51.836; 0.499 (Phyllis Currie)
TL 723 182 | YES | | This site is named after Mrs Phyllis Currie, who bequeathed it to the trust. It has diverse habitats, with grassland, a lake, woodland and ditches. Birds include kingfishers and grey herons, and 23 species of butterflies and 13 of dragonflies and damselflies have been recorded.[85] |
| Pound Wood[86] |  | 22.3 hectares (55 acres) | Thundersley
51°34′08″N 0°37′08″E / 51.569°N 0.619°E / 51.569; 0.619 (Pound Wood)
TQ 816 888 | YES | | Much of this site is ancient woodland, with some old secondary woodland. Trees include sweet chestnut, aspen and the wild service tree. There are a number of dells and ponds.[86] |
| Roding Valley Meadows[87] |  | 64.6 hectares (160 acres) | Chigwell
51°37′44″N 0°03′54″E / 51.629°N 0.065°E / 51.629; 0.065 (Roding Valley Meadows)
TQ 430 943 | YES | LNR,[88] SSSI[89] | The meadows are bordered by the River Roding. They form one of the largest areas of grassland in Essex which are traditionally managed as hay meadows, flood meadows and marshland. Plants include the largest beds in Essex of the rare brown sedge.[89] |
| Roman River Valley[90] |  | 17.8 hectares (44 acres) | Layer de la Haye
51°51′11″N 0°51′58″E / 51.853°N 0.866°E / 51.853; 0.866 (Roman River Valley)
TL 975 211 | YES | | This wetland site along the Roman River has ancient woodland and marshes. Aquatic plants include the uncommon small teasel, and there are flowering plants such as yellow archangel and moschatel.[90] |
| Rushy Mead[91] |  | 4.6 hectares (11 acres) | Bishop's Stortford
51°51′18″N 0°10′19″E / 51.855°N 0.172°E / 51.855; 0.172 (Rushy Mead)
TL 497 196 | YES | | The site has areas of sedges and reeds with water near the surface all year. They provide protection for snipe and water rails in the winter, and sedge and reed warblers in the summer. The northern part is alder woodland with some ash and willow. In drier areas there is chalk grassland which supports a wide variety of wild flowers.[91] |
| Sandylay and Moat Woods [92] |  | 7.5 hectares (19 acres) | Great Leighs
51°49′44″N 0°30′50″E / 51.829°N 0.514°E / 51.829; 0.514 (Sandylay and Moat Woods)
TL 733 175 | YES | | These adjacent woods are mainly coppiced small-leaved lime, with a small stream and many flowering plants, including wood anemones, sweet violets, spurge laurel, stinking iris and early purple orchid.[92] |
| Sawbridgeworth Marsh[93] |  | 8.9 hectares (22 acres) | Sawbridgeworth
51°49′16″N 0°09′49″E / 51.821°N 0.1635°E / 51.821; 0.1635 (Sawbridgeworth Marsh)
TL 492 158 | YES | SSSI[94] | The site is a river valley marsh close to the River Stort, which has a varied wetland flora. Grazing and cutting of the marsh in rotation maintains biological diversity.[94] Uncommon plants include marsh willowherb, marsh valerian and marsh arrow-grass, and drainage ditches and two ponds have a rich aquatic life.[93] |
| Sergeants Orchard[95] |  | 3.2 hectares (7.9 acres) | Mount Bures
51°56′35″N 0°46′30″E / 51.943°N 0.775°E / 51.943; 0.775 (Sergeants Orchard)
TL 908 308 | PP | | The site consists of an old orchard in a long narrow field, another narrow field to the west and a larger one to the east. The western field has been planted with fruit trees and the eastern one with a conservation grass mix. A rare bee, bombus muscorum, has been found on the site.[95][96] |
| Shadwell Wood[97] |  | 7.1 hectares (18 acres) | Saffron Waldon
52°02′53″N 0°17′31″E / 52.048°N 0.292°E / 52.048; 0.292 (Shadwell Wood)
TL 572 413 | YES | SSSI[98] | This is oak and ash woodland, interspersed with coppiced hazel and maple. Diverse flowering plants include oxlips, wood anemones, herb paris, and early purple and common spotted orchids.[97] |
| Shotgate Thickets[99] |  | 3.2 hectares (7.9 acres) | Wickford
51°37′05″N 0°33′11″E / 51.618°N 0.553°E / 51.618; 0.553 (Shotgate Thickets)
TQ 768 940 | YES | | This site on the north bank of the River Crouch has oak woodland, two ponds, rough grassland and thorn thickets. Fauna include great crested newts, water voles, and over seventy bird species. More than a hundred plant species have been recorded, such as golden dock and dyer's greenweed.[99] |
| Shut Heath Wood[100] |  | 20.2 hectares (50 acres) | Great Totham
51°47′17″N 0°41′06″E / 51.788°N 0.685°E / 51.788; 0.685 (Shut Heath Wood)
TL 853 133 | YES | | Over half this site is managed as farmland, and the rest is ancient oak woodland with coppiced sweet chestnut and hornbeam. The understorey is ash, elder and hazel. Invertebrates include damselflies, dragonflies, glow-worms and wood ants.[100] |
| Skippers Island[101] |  | 94.3 hectares (233 acres) | Walton-on-the-Naze
51°52′19″N 1°13′16″E / 51.872°N 1.221°E / 51.872; 1.221 (Skippers Island)
TM 218 242 | BPA | | The highest part of the island has thorn thickets, separated by grassy rides. The lowest land is saltmarsh, and there is also extensive rough pasture with brackish pools. Flora include sea hog's fennel and lax-flowered sea-lavender, and there are breeding birds such as shelducks and oystercatchers.[101] |
| Stanford Warren[102] |  | 16.6 hectares (41 acres) | Stanford-le-Hope
51°30′18″N 0°25′44″E / 51.505°N 0.429°E / 51.505; 0.429 (Stanford Warren)
TQ 687 812 | YES | | This former gravel quarry is bisected by the River Hassenbrook. It has one of the largest reedbeds in the county, together with rough grassland and marshes. The bird life is diverse, including water rails, grey wagtails and bearded tits.[102] |
| Stow Maries Halt[103] |  | 2.2 hectares (5.4 acres) | Stow Maries
51°39′40″N 0°39′07″E / 51.661°N 0.652°E / 51.661; 0.652 (Stow Maries Halt)
TQ 835 991 | YES | | The former Stow St Mary Halt railway station has marshes, a pond and scrub, together with adjoining pasture which is also part of the reserve. Butterflies include purple and white-letter hairstreaks, and there are flowers such as common fleabane and wild carrot.[103] |
| Thorndon Countryside Centre[104] |  | 200 hectares (500 acres)[105] | Brentwood
51°33′36″N 0°18′58″E / 51.560°N 0.316°E / 51.560; 0.316 (Thorndon Countryside Centre)
TQ 605 915 | YES | EWTVC,[104] SSSI[106] | The EWT runs the visitor centre for Thorndon Country Park, which is managed by Essex County Council. The park has diverse habitats, with ancient woodland, a meadow, a marsh, parkland and ponds. Mature trees include large oak and hornbeam pollards.[104] |
| Thrift Wood[107] |  | 19.4 hectares (48 acres) | Bicknacre
51°41′06″N 0°35′17″E / 51.685°N 0.588°E / 51.685; 0.588 (Thrift Wood)
TL 790 017 | YES | SSSI[108] | The site is an ancient semi-natural wood on acid soil. Wild service trees and elders are found in the shrub layer, and a pond has a raised sphagnum bog. Twenty species of butterfly have been recorded.[108] |
| Thurrock Thameside Nature Park[109] |  | 50 hectares (120 acres)[d] | Stanford-le-Hope
51°29′56″N 0°26′31″E / 51.499°N 0.442°E / 51.499; 0.442 (Thurrock Thameside Nature Park)
TQ 696 806 | YES | EWTVC[109] | The park is next to the River Thames and it has internationally important numbers of ringed plovers and avocets, and nationally important numbers of grey plovers and dunlins. Mammals include water voles, Britain's fastest declining species, and there are amphibians such as the great crested newt.[109] |
| Tile Wood[110] |  | 6.5 hectares (16 acres) | Thundersley
51°34′16″N 0°37′08″E / 51.571°N 0.619°E / 51.571; 0.619 (Tile Wood)
TQ 816 890 | YES | | The wood is ancient, having been mentioned in the Anglo-Saxon period. The main trees are sessile oak, hornbeam and sweet chestnut. Ground flora include wood sorrel, bluebells and wood-rush.[110] |
| Tiptree Heath[111] |  | 24.3 hectares (60 acres) | Tiptree
51°47′56″N 0°43′44″E / 51.799°N 0.729°E / 51.799; 0.729 (Tiptree Heath)
TL 883 147 | YES | SSSI[112] | This is the largest surviving area of heathland in Essex, and has a number of plants rare in the county. It is dominated by heather and bent grass.[112] A small herd of Dexter cattle help to control the growth of invasive scrub.[111] |
| Tollesbury Wick[113] |  | 242.9 hectares (600 acres) | Tollesbury
51°45′25″N 0°51′11″E / 51.757°N 0.853°E / 51.757; 0.853 (Tollesbury Wick)
TL 970 103 | FP | | This is coastal freshwater marsh which is grazed by sheep, and is worked by traditional methods which encourage wildlife. Areas of ungrazed rough pasture have badgers, and field voles and pygmy shrews are hunted by hen harriers and short-eared owls.[113] |
| Two Tree Island[114] |  | 259 hectares (640 acres) | Leigh-on-Sea
51°32′10″N 0°37′44″E / 51.536°N 0.629°E / 51.536; 0.629 (Two Tree Island)
TQ 824 852 | YES | NCR,[115][116]NNR,[117] SSSI[116] | Mudflats provide food for wildfowl such as Brent geese, and waders such as dunlins and grey plovers. There are also areas of saltmarsh, grassland, lagoons, scrub and reedbeds. Butterflies include the marbled white, small skipper and Essex skipper.[114] |
| Warley Place[118] |  | 10.1 hectares (25 acres) | Brentwood
51°35′31″N 0°17′02″E / 51.592°N 0.284°E / 51.592; 0.284 (Warley Place)
TQ 583 906 | YES | | In the late nineteenth and early twentieth centuries this site was the garden of the leading horticulturalist, Ellen Willmott, who planted many plants from all over the world, some of which still survive. There is a line of mature sweet chestnuts, and flowers including daffodils, snowdrops and crocuses.[118] |
| Weeleyhall Wood[119] |  | 13.6 hectares (34 acres) | Weeley
51°50′42″N 1°07′55″E / 51.845°N 1.132°E / 51.845; 1.132 (Weeleyhall Wood)
TM 158 209 | YES | SSSI[120] | This site has a variety of woodland types, reflecting diverse soils. It is mainly pedunculate oak over a layer of coppice hazel and sweet chestnut planted in the nineteenth century. There are two ponds and species-rich damp, grassy rides.[120] |
| West Wood[121] |  | 23.5 hectares (58 acres) | Thaxted
51°58′30″N 0°21′47″E / 51.975°N 0.363°E / 51.975; 0.363 (West Wood)
TL 623 333 | YES | SSSI[122] | The site is ancient woodland on chalky boulder clay and sandy loam. It was mainly elm, but this has died and the wood regenerated naturally with ash. Bramble and dog's mercury dominate the ground layer, with a rich variety of plants in wetter areas, such as oxlip and meadow-sweet.[122] There are many species of birds and butterflies, and four ponds which have great crested newts, dragonflies and damselflies.[121] |
| Westhouse Wood[123] |  | 2.8 hectares (6.9 acres) | Colchester
51°54′29″N 0°52′08″E / 51.908°N 0.869°E / 51.908; 0.869 (Westhouse Wood)
TL 974 271 | YES | | The wood is mainly coppiced hazel, and other tree include small-leaved lime, crab apple, oak, ash, sweet chestnut, field maple and rowan. There are flowering plants such as wood anemones and foxgloves.[123] |
| Woodham Fen[124] |  | 8.1 hectares (20 acres) | South Woodham Ferrers
51°38′49″N 0°35′49″E / 51.647°N 0.597°E / 51.647; 0.597 (Woodham Fen)
TQ 798 975 | YES | SSSI[74][75] | The site lies between two tidal creeks which run into the River Crouch. It has saltmarsh and rough grassland with an unusual transition zone between them. Birds include reed buntings, yellow wagtails and meadow pipits, and there are common lizards and slowworms.[124] |
| Wrabness[125] |  | 24.3 hectares (60 acres) | Wrabness
51°56′24″N 1°09′04″E / 51.940°N 1.151°E / 51.940; 1.151 (Wrabness)
TM 167 315 | YES | LNR[126] | This site has grassland, marsh, scrub and woodland. It has a diverse bird life, such as yellowhammers, common whitethroats, song thrushes and short-eared owls. There are also winter visitors including black-tailed godwits, grey plovers and turnstones.[125] |
