| 19th January 1966 | Indira Gandhi is elected Prime Minister of India; she is sworn in on 24th January 1966. |
| 9th March 1966 | Ronnie Kray murders George Cornell in East London's Blind Beggar pub. He is convicted of the crime three years later, in 1969. |
| 20th March 1966 | The Jules Rimet Trophy, the original prize for winning the FIFA World Cup, is stolen at an exhibition. It is later found by a dog named "Pickles" and his owner David Corbett. |
| 31st March 1966 | The Labour Party wins the general election under leader Harold Wilson. |
| 21st April 1966 | The opening of Parliament is televised for the first time. |
| 30th April 1966 | Regular hovercraft service begins over the English Channel. It runs until 2000 and is then discontinued due to the emergence of the Channel Tunnel. |
| 6th May 1966 | The Moors Murder trial comes to a close with Ian Brady being found guilty on all three counts of murder. He is sentenced to three concurrent terms of life imprisonment. Myra Hindley is convicted on two counts of murder and of being an accessory in the third murder committed by Brady; she receives two concurrent terms of life imprisonment and a seven-year fixed term for being an accessory. |
| 29th June 1966 | A sailors' strike, organised by the National Union of Seamen, ends in the United Kingdom. |
| 16th July 1966 | Prime Minister Harold Wilson flies to Moscow for peace negotiations over the Vietnam War. A meeting with Russian leaders is unsuccessful, as the Soviet government refutes his ideas. |
| 30th July 1966 | England beats West Germany 4-2 after extra time to win the 1966 FIFA World Cup at Wembley. |
| 5th August 1966 | The Beatles release the legendary “Revolver” album. |
| 8th September 1966 | “Star Trek“ is shown on television for the first time. The opening episode is titled "The Man Trap". |
| 19th September 1966 | Scotland Yard arrests Ronald Edwards, a suspect in the Great Train Robbery. |
| 21st October 1966 | A landslide devastates the town of Aberfan in South Wales. 144 people are killed and 116 of these victims are children between the ages of seven and ten. Many of these children had attended Pantglas Junior School, which had been destroyed in the landslide. |
| 22nd October 1966 | British spy George Blake escapes from Wormwood Scrubs prison; he is next seen in Moscow. |
| 9th November 1966 | John Lennon meets Yoko Ono at the Indica Gallery. |
| 15th December 1966 | Walt Disney, American animated film producer (b. 1901) dies from lung cancer. |
31st December 1966 | Thieves steal millions of pounds-worth of paintings from the Dulwich Art Gallery in London. |