# List of species occurring in Britain at a single location

The following is a list of native plant and animal species which are found in Britain, but only at a single location.

## Key

Key to conservation designations for species:
* RDB - Red Data Book with three subdivisions
** (cr) - critically endangered
** (en) - endangered
** (vu) - vulnerable
* W&CA 8 - Schedule 8 of the Wildlife and Countryside Act 1981
Key to conservation designations for sites:
* NNR - national nature reserve
* SSSI - Site of Special Scientific Interest

## Currently found at just a single location
### Non-vascular plants

| Species | Conservation designation(s) of species | Location at which found | Conservation designation(s) of location | Date of discovery at this location | Formerly found elsewhere |
| Thamnobryum angustifolium, Derbyshire feathermoss | RDB (CR) | Derbyshire | SSSI | 1886 | No |

### Vascular plants

    This section currently lists non-critical species and critical species in the smaller apomictic genera; many microspecies in the apomictic genera Hieracium (hawkweeds), Rubus (brambles) and Taraxacum (dandelions) are also found at just a single site each.
| Species | Conservation designation(s) of species | Location at which found | Conservation designation(s) of location | Date of discovery at this location | Formerly found elsewhere |
| Diapensia Diapensia lapponica | RDB (vu), W&CA 8 | Glenfinnan | None | 1951 | No |
| Rannoch-rush Scheuchzeria palustris | RDB (vu) | Rannoch Moor | SSSI, NNR | 1910 | Yes |
| Least adder's-tongue Ophioglossum lusitanicum | RDB (vu) | St Agnes, Isles of Scilly | SSSI | 1950 | No |
| Lundy cabbage Coincya wrightii | RDB (vu), W&CA 8 | Lundy, Devon | | | No |
| Alpine rock-cress Arabis alpina | RDB (vu) | Isle of Skye | | | No |
| Bristol rock-cress Arabis scabra | RDB (vu), W&CA 8 | Avon Gorge, Bristol | | | No |
| Lady's-slipper Cypripedium calceolus | RDB (cr), W&CA 8 | Wharfedale | | | Yes |
| Shetland mouse-ear Cerastium nigrescens | RDB (vu) | Unst, Shetland | | 1837 | No |
| Teesdale sandwort Minuartia stricta | | Widdybank Fell, Teesdale | | | No |
| Wild cotoneaster Cotoneaster cambricus | | Great Orme Head | | | No |
| Arran whitebeam Sorbus arranensis | | Isle of Arran | | | No |
| Arran service-tree Sorbus pseudofennica | | Isle of Arran | | | No |
| Catacol whitebeam Sorbus pseudomeinichii | | Isle of Arran | | | No |
| Wilmott's whitebeam Sorbus willmottiana | | Avon Gorge | | | No |
| Bristol whitebeam Sorbus bristoliensis | | Avon Gorge | | | No |
| The sea-lavender Limonium paradoxum | | St David's Head, Pembrokeshire | | | No |
| The sea-lavender Limonium transwallianum | | Giltar Point, Pembrokeshire | | | No |
| The sea-lavender Limonium loganicum | | Logan Rock to Carn Les Boel, Cornwall | | | No |
| The eyebright Euphrasia campbelliae | | Isle of Lewis | | | No |
| Wall germander Teucrium chamaedrys | | Beachy Head, Sussex | | | No |
| Leafless hawk's-beard Crepis praemorsa | | Cumbria | | | No |
| Wood calamint Clinopodium menthifolium | | Isle of Wight | | | No |
| Radnor lily Gagea bohemica | | Radnorshire | | | No |
| Sand crocus Romulea columnae | | Dawlish Warren | | | No |
| Strapwort Corrigiola litoralis | | Slapton Ley, Devon | | | Yes |
| Creeping marshwort Apium repens | | Port Meadow, Oxford | | | Yes |
| Fen ragwort Senecio paludosus | | Ely | | | Yes |
| Holly-leaved Naiad Najas marina | RDB (vu) | Norfolk Broads | | 1883 | Yes (fossil record) |
| Triangular club-rush Scirpus triqueter | | Tamar Estuary, Devon | | | Yes |

### Invertebrates

| Species | Conservation designation(s) of species | Location at which found | Conservation designation(s) of location | Date of discovery at this location | Formerly found elsewhere |
| Geotomus punctulatus – a shield bug | RDB1 | Whitesand Bay, Sennen, Cornwall | none | 1864 | Yes |
| Syncopacma suecicella – a micro moth | | Kynance Cove, Cornwall | SSSI | 1984 | No |
| Common forest looper (Pseudocoremia suavis) | | Great Work, near Tregonning Hill, Breage, Cornwall | none | 2007 | No |
| Fisher’s estuarine moth (Gortyna borelii lunata) | | Hamford Water, northeast Essex | SSSI | | |
| Morris's wainscot (Chortodes morrisii morrisii) | | west Dorset coast | SSSI | | |
| Sphaerius acaroides – a sphaeriusid beetle | | Eype Mouth, Dorset | | | No |
| Sitona gemellatus – a weevil | | Eype Mouth, Dorset | | | Yes |
| Prostoma jenningsi – a ribbon worm | | A lake between Croston and Bretherton, Lancashire | | 1967 | No |
| Trembling sea mat (Victorella pavida) | Schedule 5 of the Wildlife and Countryside Act 1981 and Species Action Plan | Swanpool, Falmouth | SSSI and LNR | 1968 | Yes |
| Megathiris detruncata – a lamp shell | | 35 fathom mark off Men-a-vaur, Isles of Scilly | | 1888 | No |
| Ivell's sea anemone (Edwardsia ivelli) | Schedule 5 of the Wildlife and Countryside Act 1981 | Widewater Lagoon, West Sussex | | 1975 | No |

### Vertebrates
#### Birds

| Species | Conservation designation(s) of species | Location at which found | Conservation designation(s) of location | Date of discovery at this location | Formerly found elsewhere |
| Common crane (Grus grus) (see note 1) | RDB | The Norfolk Broads | | 1979 | Yes |

##### Notes

* Common crane, although occurring in fluctuating numbers as a scarce spring and autumn migrant through Britain, with occasional individuals or pairs wintering or summering, has only established a single breeding population, in the Norfolk Broads (see Cranes in Britain for more details); the species was thought to be quite widespread in the Middle Ages, but the term 'crane' was also often applied to grey heron, making a reliable determination of historical status difficult.