WElections to Cornwall County Council were held on 7 May 1981.
WThe 1985 Cornwall County Council election for the Cornwall County Council were held on 2 May 1985, as part of the wider 1985 local elections.
WThe Truro by-election, 1987, was caused by the death of David Penhaligon, the Liberal Member of Parliament (MP) for Truro on 22 December 1986 in a car crash near the city. The election was held on 12 March 1987. The constituency was renamed Truro and St Austell in 1997.
WThe 1989 Cornwall County Council election to the Cornwall County Council was held on 4 May 1989, as part of the wider 1989 local elections.
WOn 16 July 1983 a British Airways Helicopters commercial Sikorsky S-61 helicopter, Oscar November (G-BEON), crashed in the southern Celtic Sea, in the Atlantic Ocean, while en route from Penzance to St Mary's, Isles of Scilly in poor visibility. Only six of the twenty-six people on board survived. It was Britain's worst helicopter civil aviation accident at the time.
WThe Camelford water pollution incident involved the accidental contamination of the drinking water supply to the town of Camelford, Cornwall, in July 1988. Twenty tonnes of aluminium sulphate was inadvertently added to the water supply, raising the concentration to 3,000 times the admissible level. As the aluminium sulphate broke down it produced several tonnes of sulphuric acid which "stripped a cocktail of chemicals from the pipe networks as well as lead and copper piping in people's homes." Many people who came into contact with the contaminated water experienced a range of short-term health effects, and many victims suffered long-term effects whose implications remained unclear as of 2012. There has been no rigorous examination or monitoring of the health of the victims since the incident, which is Britain's worst mass poisoning event. Inquests on people who died many years later found very high levels of aluminium in the brain. Dame Barbara Clayton led a Royal Commission on Environmental Pollution enquiry into the incident.
WThe Penlee lifeboat disaster occurred on 19 December 1981 off the coast of Cornwall. The lifeboat Solomon Browne, based at the Penlee Lifeboat Station near Mousehole, went to the aid of the vessel Union Star after its engines failed in heavy seas. After the lifeboat had rescued four people, both vessels were lost with all hands; in all, sixteen people died including eight volunteer lifeboatmen.