British Umplanians

In 1984 an alien spacecraft containing 100,000 aliens called Umplanians landed in Hyde Park in the UK. Although there was at first hopes the aliens could help humanity, it soon became clear that the Umplanians did not operate the spacecraft. They were in fact slaves being transported to another planet. On their planet whole swathes of their populace has been exterminated and the remainder shipped away as slaves. This ships engines broke and the ships computer directed it to a random habitable planet in the galaxy. The slaves had been put into hibernation. When they arrived the slaves were set free as the computer assumed that the planet was occupied by its creators. Her Majesty's Government agreed to grant the aliens asylum. Seven months afterwards the ship partly self-destructed. There was now no hope of the aliens leaving. The aliens were granted British citizenship and were given citizenship classes.