Coins minted in the Year 1984

What happended in 1984?
Monarch is Queen Elizabeth II. Prime Minister is Margaret Thatcher (Conservative). US President is Ronald Reagan. Year of the Miners strike. Nissan to build cards in Britain. First Virgin Atlantic flight. The Brighton hotel bombing. Chancellor Nigel Lawson announces the halfpenny will be demonetised and withdrawn from circulation. The Olympics are in Los Angeles, USA. Winter Olympics in Sarajevo, Yugoslavia, where Torvill and Dean win gold. Band Aid's "Do They Know It's Christmas?" gets Christmas number one.