1980s

The 1980s was, due to numerous visits by the Doctor's faulty TARDIS, a temporally complicated decade in history to the point that it merged with the preceding 1970s, resulting in the placing of events becoming distorted and disputed. In light of this, the Accord, foreseeing a "great war spreading through time", reinforced the vulnerable decades by altering the DNA of every single person who lived within them on a temporal level so that they subconsciously realised that there were inconsistencies with history. In response to the temporal discrepancies, a dating protocol was established by the United Nations on 1 January 1990, (PROSE: The Enfolded Time) which would be used as a reference by the Unified Intelligence Taskforce. (TV: The Day of the Doctor)

Charlie Flecknoe invented and built a quantum link from Earth to the Moon at some point in the 1980s. (PROSE: Apollo 23)

During the latter half of the decade, Mikhail Gorbachev, the General Secretary of the Communist Party of the Soviet Union, instigated reform within the Soviet Union through the policies of "" and "". (AUDIO: Thin Ice) This ultimately led to the fall of the Berlin Wall on 9 November 1989 and the collapse of the Soviet Union in the early 1990s. (AUDIO: Protect and Survive)

In the late 1980s, three or four years prior to 1992, the Cybermen attacked the planet Veridia, where they killed or converted tens of thousands of the native Veridians. (AUDIO: Hour of the Cybermen)

In the late 1980s and the early 1990s, Brendan Richards studied at the University of Cambridge. (PROSE: Housewarming)