The New World (Alien takeover)

The decolonization and recolonization of earth
In 2023 the doctor was fighting a group of rogue cyber men who were attacking the British Museum the north side of London. during this mission to Dr. discovers a secret base under the British Museum full of cyber man who were plotting to destroy the world. The doctor attempts to use in EMP they kill the cyber man however instead of the cyber men see him coming and detonated a nuclear reactor that levels the city of London and kills the doctor. The doctor cannot regenerate and dies. The surviving members of the British government can see in the city of Birmingham however they believe that the city of London was  was destroyed in a nuclear attack perpetrated by Pakistan as retaliation for decades of colonialism. There is that a nuclear war that destroys much of Western Europe. The nuclear winter lasts for 50 years finally ending in the 2050s. By then much of the world had fallen to economic collapse and financial ruin. However in 2063 Iceland, Greenland and the province of Ontario newly independent as of 2067 recover their economy and reestablish space going vessels. By 2100 a series multi generational ships leave the planet to establish a colony on the newly discovered earthlike planet in Proxima Centauri. By 2150 years population is approximately 1,000,000,000 people approximately the population of 1800 Earth. by 2300 remaining human population of Earth live in the former region of eastern Europe and in massive geodesic domes and Antarctica. Many of the other continents were emptied out as a result of famine and disease of colonization. by 2324 the moon is colonized at Earth loses half of its original population. By 2400 years human population is approximately at the same level it was at in the 13th century. Most of North America, Asia Africa and South America are devoid of human life. on May 1, 2024 the torchwood Institute formally a British government department that protected humans from alien life establishes the torchwood Republic in Eastern Europe. in January the Middle East and part of Africa or resettled by a group of  of colonists from new Babylon. New Babylon was made up of African and Middle Eastern immigrants who left in the 22nd century. The Pacific islands also become known as the human states as a result of their resettlement by a group of Icelandic colonists from the north side of the moon.