A thread of extinct British animals, because I feel like it:

Straight-tusked Elephant (Palaeoloxodon antiquus) https://en.wikipedia.org/wiki/Straight-tusked_elephant

Woolly Mammoth (Mammuthus primigenius)

Remains have been found at West Runton, on the North Norfolk coast. https://en.wikipedia.org/wiki/Woolly_mammoth

Barbary Macaque (Macaca sylvanus)

Still exists on Gibraltar and NW Africa

Neanderthal (Homo neanderthalensis)

Eurasian Beaver (Castor fiber)

Reintroduced, with a pair in North Essex and several individuals in Devon.

Arctic Lemming (Dicrostonyx torquatus)

Still exists in Arctic Russia. English population died out 10,000 years ago