1968

1968 was an important year for the Time Lords. Cuthbert Simpson learned the randomiser code for the Doctor's TARDIS from Susan Seymour, (PROSE: The Banquo Legacy) allowing the Time Lords to track down the Eighth Doctor. (PROSE: The Ancestor Cell)

Paul VI was the Pope of the Catholic Church in this year. (PROSE: Revolution Man)

The United Nations had established protocols for first contact with alien life by this time. (TV: The Sound of Drums)

Igrix intended to stop the Vietnam War in 1968. (COMIC: The Love Invasion)

According to some accounts, the London Event occurred in 1968, (PROSE: Downtime, Revolution Man, HOMEVID: Global Conspiracy?) leading to the formation of UNIT by the end of the year. (PROSE: The Left-Handed Hummingbird, Revolution Man)

January - June
On 14 February, the San Francisco Chronicle reported that Revolution Man's symbol had appeared on both towers of the Golden Gate Bridge. (PROSE: Revolution Man)

On 21 February, the Sixth Doctor left Henry Gordon Jago and Professor George Litefoot in the Red Tavern in London, mistakenly believing that it was the 1890s. (AUDIO: Voyage to the New World)

On 15 March, La Stampa reported the Revolution Man's symbol had appeared on the floor of St Peter's Cathedral. Pope Paul VI claimed that this was "the most serious of crimes."

On 28 April, the Revolution Man's symbol appeared in the Red Square. In response to this, Leonid Brezhnev said that the "forces of imperialist and capitalist aggression" would be punished for their "provocative action" against the "heroic Soviet people."

On 29 April, the Pravda reported about the Red Square's vandalism. (PROSE: Revolution Man)

According to one account, (PROSE: Revolution Man) the Great Intelligence invaded London sometime before June. It took over most of the London Underground with a deadly web and began spreading upwards into the streets. The city was evacuated and the military were sent into the Underground to stop the web at its source. The Second Doctor, Jamie McCrimmon, and Victoria Waterfield were brought to Earth by the Intelligence. With the help of Alistair Gordon Lethbridge-Stewart, the Doctor was able to defeat the Intelligence. (TV: The Web of Fear)

Before June, the United Nations Intelligence Taskforce was formed in response to the London Event. (PROSE: Revolution Man)

In June, India and East Pakistan were damaged by a series of extreme tidal waves. (PROSE: Revolution Man)

On 3 June, Andy Warhol was shot by Valerie Solanis. The Eighth Doctor, Samantha Jones, and Iris Wildthyme were present for the events surrounding the shooting. (PROSE: Femme Fatale)

On 5 June, the Eighth Doctor and Samantha Jones came to England and met up with Jean-Pierre Rex. After their visit, Rex was psychically attacked by Ed Hill and decapitated and drowned in a pond. Hill then took Rex's place as the Revolution Man.

Also on 5 June, the Chinese army came to Tibet to steal the psychic drug Om-Tsor from a group of monks. Fitz Kreiner and Madeline Burton were with the Monks the time of the attack. Madeline managed to escape with the help of the Eighth Doctor, but Fitz was taken by the Chinese. For the rest of the year, Fitz was brainwashed into becoming loyal to the Chinese. (PROSE: Revolution Man)

July - December
On 1 July, the Times of India reported that the Indian government had accused China of a deliberate attack on Indian territory. The Indian army was mobilised along in the provinces of Assam and Bengal. (PROSE: Revolution Man)

On 18 July, Lucia Moretti, a lover of Jack Harkness and the eventual mother of his daughter, began her work as a Torchwood agent. (TV: Children of Earth: Day Three)

In early August, the Great Mother came to London with Sanjaya Starr to impregnate people with her eggs. The children of the great mother secreted mind-altering hormones which the Great Mother used to make cooks put her eggs into their food. She decided to impregnate Henry Gordon Jago with the next Great Mother. Jago was almost eaten from the inside by the next Great Mother, but George Litefoot made Jago drink a medicine that killed the new Great Mother. Litefoot then did the same thing for the rest of the Great Mother's victims.

After Jago recovered, he was shown his new studio for Those Were the Days: the Palace Theatre. (AUDIO: The Case of the Gluttonous Guru)

On 11 November, Ed Hill used his powers to destroy US aircraft carrier Constitution. He then carved the Revolution Man symbol on the broken metal of the ship.

On 12 November, The Times reported on the destruction of the Constituition and its implications for the future of the Vietnam War. (PROSE: Revolution Man)

In December, the BBC science fiction series Nightshade starring Edmund Trevithick as the title character was rebroadcast on BBC2. (PROSE: Nightshade, PROSE: The Left-Handed Hummingbird)

During the filming of the Those Were the Days Christmas special, Guinevere Godiva reconstituted the mind of Magnus Greel using a Venusian crystal. He took possession of Detective Inspector Dave Sacker to continue living. When Greel was killed by Jago and Litefoot, Jago and Litefoot used the preprogrammed time cabinet to travel from 1968 to 1893 again. (AUDIO: The Final Act)

On 20 December, Cristián Alvarez met the Seventh Doctor in London. At this time, the Doctor began transforming into Huitzilin. Hamlet Macbeth found the Doctor and, with the help of Ace and Bernice Summerfield, he brought the Doctor to a UNIT laboratory. The Doctor spent the next three weeks recovering. (PROSE: The Left-Handed Hummingbird)

On 23 December, the Sentience began stirring in Crook Marsham. (PROSE: Nightshade)

On 24 December, the Seventh Doctor and Ace arrived in Crook Marsham and became involved in the fight against the Sentience. (PROSE: Nightshade)

On 25 December, the final battle against the Sentience took place. It departed Crook Marsham. Actor Edmund Trevithick died in the incident. (PROSE: Nightshade)

Unknown dates
The Monk deposited £200 in a London bank, and collected a fortune with compound interest by travelling forward in time to 2168. (TV: The Time Meddler)

The 1968 Olympic Games were held in Mexico. (TV: The Underwater Menace)

An attempt by the Cybermen to build a Cyber City on Earth was defeated by the Second Doctor, John and Gillian. (COMIC: The Cyber Empire)

The Master planted the Necronomicon on Jamie McCrimmon in London. It then took the Doctor's TARDIS to the Nameless City. (PROSE: The Nameless City)

The London police announced that they would be scrapping all police boxes. (PROSE: The Nameless City)

Martin Luther King was assassinated. This led to many riots in the United States of America. (AUDIO: The Age of Revolution)

Simon Jenkins was born. (PROSE: Damaged Goods)

Colin, Helen, Mikey and Janine were born. (AUDIO: And You Will Obey Me)

Jack Harkness was present for the Parisian student riots. (PROSE: The Book of Jahi)

Ross Bevan was born. (AUDIO: One Rule)

Shirley1968 was born. (PROSE: Lonely)

Linda Grainger was born. (PROSE: Childhood Living)

The space capsule Apollo 7 was launched. It orbited the Earth. It was later an exhibit in the Time Museum visited by the Second Doctor, John and Gillian. (COMIC: The Time Museum)

The cryogenically frozen World War I soldier Tommy Brockless was revived. Exploring the outside world, he was intrigued by the short skirts worn by young women. He later claimed it was as if all of his Christmases had come at once. (TV: To the Last Man)

Alternate timelines
In an aborted timeline, the Eighth Doctor prevented Valerie Solanis from shooting Andy Warhol by jumping into the line of fire because he was unaware that Warhol was supposed to be shot. The Doctor and Samantha Jones became trapped on Earth. Iris Wildthyme travelled back in time and prevented this version of history from occurring. (PROSE: Femme Fatale)

Behind the scenes
The history section on the UNIT website also states that UNIT was formed in this year shortly after the London Incident.