London
London was a big city. In one universe, it was located an hour's train ride away from a South Coast city, Right-On By The Sea, and was home to the H.Q. of Apollo Coffee. (COMIC: Damn Fine Hostile Takeover)
In Reality Z-25 31-H, Takako Yoshida's failed assassination of Sir James Carey took place in London. (PROSE: Battle Angel Yoshida Bio)
Victorian London existed in several universes and was a favourite Christmas-time hangout of Jenny Everywhere, who enjoyed the Dickensian atmosphere. In the Prime Universe's Victorian London, “clockwork automata were not unheard of, but they would have attracted attention”. (PROSE: The Time of the Toymaker)
In at least one universe, London was home to a bookshop in Soho that belonged to the eccentric angel Aziraphale. (PROSE: You've Been To Eden, I Perceive)