List of extinct animals of the British Isles

This is a list of extinct animals of the British Isles. Only a small number of these are globally extinct, most famously the Irish elk, great auk and woolly mammoth. Most of the remainder survive to some extent outside the islands. The list includes introduced species only in cases where they were able to form self-sustaining colonies for a time. Only species extinct since Great Britain was separated from mainland Europe are included. The date beside each species is the last date when a specimen was observed in the wild or, where this is not known, the approximate date of extinction. The list is complete for mammals, reptiles, freshwater fish and amphibians.

General reference: Waring et al., 2009.

† – Species is extinct worldwide

The white-tailed eagle has been successfully re-established on the west coast of Scotland.Red kites have been successfully re-established in parts of England and Scotland. Ongoing projects involve both these species: the corncrake into parts of England and Scotland, and the great bustard on Salisbury Plain.

European beavers have been reintroduced to parts of Scotland, and there are plans to bring them back to other parts of Britain. A five-year trial reintroduction at Knapdale in Argyll started in 2009 and concluded in 2014. A few hundred beavers live wild in the Tay river basin, as a result of escapes from a wildlife park. A similar reintroduction trial is being undertaken on the River Otter in Devon, England. In 2016, beavers were recognised as a British native species, and will be protected under law.

...
Wikipedia