A parallel universe was the first which was explored by Rose Tyler in her search for the Doctor in N-Space. Originally from N-Space herself, Rose was sent to this universe from Pete's World via the dimension cannon. (AUDIO: The Endless Night)
The 2005 Auton attack in London, the destruction of Big Ben by Slitheen craft, and the invasion of the Sycorax on Christmas Day 2006 had not occurred. Subsequently, Clive Finch had not been killed by Autons and was still alive; unlike his N-Space counterpart, he was unmarried and had no children.
Shortly after Rose arrived in this universe, the Sun was extinguished without warning. Mass riots began in London, as well as Tokyo, Moscow, and India. The BBC's final broadcast had the Prime Minister announce that the Sun had indeed burnt out and there was no hope of humanity being saved. Rose was able to escape this universe, taking this Earth's version of Clive Finch with her back to Pete's World. (AUDIO: The Endless Night)