Title: 1683
Content: Wild boars are hunted to extinction in Britain. 
Title: Eurasian wolf
Content:  The extermination of Northern Europe's wolves first became an organized effort during the Middle Ages, and continued until the late 1800s. In England, wolf persecution was enforced by legislation, and the last wolf was killed in the early 16th century during the reign of Henry VII. Wolves survived longer in Scotland, where they sheltered in vast tracts of forest, which were subsequently burned down. Wolves managed to survive in the forests of Braemar and Sutherland until 1684. The extirpation of wolves in Ireland followed a similar course, with the last wolf believed to have been killed in 1786. A wolf bounty 
Title: Bears in Ireland
Content:  Bears were once common in Ireland but are now extinct on the island, dying out in the 1st millennium BC.
Title: Domestic sheep predation
Content:  Brown bears are thought to have become extinct in the British Isles in the year 500, while the last wolves were wiped out in 1786. Today the only wild animals remaining as a tangible threat to lambs in the British Isles are the red fox, badger, and eagles. Domestic dogs are also a common cause of predation of lambs and sheep (they can also sometimes die of shock after any attempted predation or attack). There are many anecdotal reports of badgers predating sheep or lambs, but very little solid evidence of attacks. Badgers will scavenge carcasses of animals that have died of other 
Title: Ungava brown bear
Content:  It is not known exactly when the Ungava brown bear died out, but reports of their sightings slowly declined throughout the 19th and 20th centuries, and the population was most likely extinct by the latter part of the 20th century, at least partly due to persecution by fur trappers.
Title: Nissedal
Content:  a total of eight bears at Horgevika. The last bear to be shot in this area was by Landtaksdammen in 1920 by Jon Kraakenes of Vrådal. The last certified observation of bears in Nissedal happened in the summer of 2000 at Lauvlunden. The last documented person to be killed by bear in Nissedal was Hæge Kyrkjebø in July 1832. A felling license is required by the municipality for wildlife such as Moose, Red deer, Roe deer, and Mountain reindeer. Hunting is particularly popular among Nissedal's southern border to Gjerstad where small game, deer and beavers are regularly hunted. Rabbit hunting is common in Ljosvassteigen on the border to Gjerstad and Vegårshei. Gjerstadskogene by Solhomfjell is a popular destination for those hunting birds, rabbits, beavers, and deer.
Title: Fauna of Scotland
Content:  The common crane and great bittern were exterminated by hunters and the draining of marshes in the 18th century. The last great auk seen in Britain was killed on Stac an Armin, a rocky pinnacle in the St Kilda archipelago in July 1840.
Title: Bear hunting
Content:  for ranching, bears were becoming increasingly more hunted as threats to livestock. In 1818, a “War of Extermination” against wolves and bears was declared in Ohio. Bear pelts were usually sold for 220 dollars in the 1860s. Between 1850 and 1920 grizzly bears were eliminated from 95% of their original range, with extirpation occurring earliest on the Great Plains and later in remote mountainous areas. Unregulated killing of bears continued in most places through the 1950s and resulted in a further 52% decline in their range between 1920 and 1970. Grizzly bears managed to survive this last period of hunting only in remote wilderness areas larger than 26,000 km2 (10,000 mi2). Overall, grizzly bears were eliminated from 98% of their original range 
Title: Wolves in Great Britain
Content:  Queen of Scots is known to have hunted wolves in the forest of Atholl in 1563. The wolves later caused such damage to the cattle herds of Sutherland that in 1577, James VI made it compulsory to hunt wolves three times a year. Stories of the killing of the alleged last wolf of Scotland vary. Official records indicate that the last Scottish wolf was killed by Sir Ewen Cameron in 1680 in Killiecrankie (Perthshire), but there are reports that wolves survived in Scotland up until the 18th century, and a tale even exists of one being seen as late as 1888.
Title: Kodiak bear
Content:  Both incidents involved hunters who were hunting by themselves, and were returning to game they had killed previously, and left alone in order to continue hunting. One of the attacks was fatal, with the hunter being killed by the bear, and occurred on Uganik Island (November 3, 1999), which is part of the Kodiak archipelago. In the other incident, after being attacked by the bear, the hunter stabbed it with a knife, then recovered their rifle and killed the attacking bear. This occurred on Raspberry Island, home to two full-service wilderness lodges. Prior to that, the last fatality was in 1921. About once every other year, a bear injures a person on Kodiak.

Question: when was the last bear killed in the uk?
Answer: c. 1000 AD.