List of endemic species of the British Isles
Bryophytes
. Cornish path-moss Ditrichum cornubicum - endemic to Cornwall
. Dixon's Thread Moss - Scotland only.
. Scottish Thread Moss - Scotland only.
. Scottish Beard Moss - Scotland only.
Plants
. Western Ramping-fumitory Fumaria occidentallis – Cornwall and the Isles of Scilly . Ramping-Fumitory Fumaria muralis subsp. neglecta not seen since 1982 and may be extinct – Cornwall
. Isle of Man Cabbage – Irish Sea coasts of the British Isles only.
. Lundy Cabbage – Lundy Island only.
. Shetland pondweed – Shetland Islands only.
. Wild Cotoneaster – Great Orme and surrounding areas only.
. Radyr Hawkweed - Radyr only.
. Brambles: . Rubus briggsii . Rubus rotundifolius . Rubus turneri
. Apomictic Whitebeams endemic to the British Isles: . Sorbus arranensis – Isle of Arran only.
. Arran Service Tree – Isle of Arran only.
. Sorbus pseudomeinichii - Isle of Arran only.
. Lancaster Whitebeam - Lancaster only.
. English Whitebeam - Great Britain and Ireland only.
. Bristol Whitebeam - Avon Gorge only.
. Devon Whitebeam – Devon, Somerset, Cornwall and Ireland only.
. Ley’s Whitebeam – Brecon Beacons only.
. Lesser Whitebeam – Brecon Beacons only. . Sorbus leptophylla – endemic to UK
. Sorbus wilmottiana – endemic to UK
. Bloody Whitebeam – Exmoor only.
. Sorbus subcuneata – coastal North Devon and Western Somerset only.
. Cheddar Whitebeam – Cheddar Gorge only.
. “No Parking” Whitebeam – North Devon only.
. Llangollen Whitebeam – Llangollen only.
. Irish Whitebeam – Ireland only.
. Leigh Woods Whitebeam, Leigh Woods only.
. Plot’s Elm – English Midlands only.
. Alderney Sea-lavender, Alderney only.
. Scottish Primrose – Orkney, Sutherland and Caithness only.
. Welsh Groundsel – North Wales only.
. Shetland Mouse-ear - island of Unst only
. Dandelion: . Cornish Dandelion – Cornwall only.
Insects
. Eudarcia richardsoni– a micromoth only found on the Dorset coast.
. Piesma quadratum spergulariae a bug – Isles of Scilly
Birds
. Red Grouse – classified either as a distinct species or a subspecies of Willow Grouse– doesn’t change plumage in winter as Willow Grouse does – Upland and Moorland areas of Great Britain and Ireland.
. Pied Wagtail – British subspecies of the Pied / White Wagtail–throughout British Isles.
. Shetland Wren – Shetland Islands, Scotland only.
. Fair Isle Wren – Fair Isle, Scotland only.
. St Kilda Wren – St Kilda Islands, Scotland only.
. Scottish Crossbill – Highlands, Scotland only.
. British Isles subspecies of White-throated Dipper
Mammals
. Irish Hare or the Irish subspecies of the Mountain Hare – Mountain Hares are also found in other locations of the British Isles, but in Ireland have the distinction of not turning white in winter.
. "Scottish" Wildcat – Formerly also found in Northern England and Wales, this subspecies of the Wildcat is now restricted to a few locations in Scotland largely due to hunting and hybridisation with Domestic Cats.
. St Kilda Field Mouse – St Kilda Islands, only.
. Orkney Vole – Orkney, only.
. Skomer Vole - Skomer Island only. A subspecies of Bank Vole.
Fish
. Gwyniad – Snowdonia only.
. Schelly – Lake District only.
. Vendace – Lake District and Dumfries and Galloway only.
. Pollan – Ireland only.
. Powan – Scotland only.
Extinct
. Presumed British subspecies of Grey Wolf
. Essex Emerald Moth (British Subspecies)
. St Kilda House Mouse
. Jersey Toadflax