Nobody truly remembers the moment our gravity reversed, partly owed to the fact that the vast population of mammals were wiped from the bewildered frown of the Earth's face, but mainly because those remaining hit the ceiling with their heads. The thing that really got to the surviving populace of Britain was that it occurred precisely at midday, whilst many were outdoors or departing for their lunch. They were just plucked like ants from their mound. Many of the more religious surviving groups believed that it was the second coming of Jesus and instead of 'coming' to us, it was our turn to...