Flood made Britain into an island 'in 24 hours' By Tim Hall (Filed: 25/09/2006) Britain may have become an island after a Biblical-style flood split it from Europe in less than 24 hours, according to new geological research. The flood would have taken place between 400,000 and 200,000 years ago, sweeping away hills between Britain and what is now France. The theory could rewrite British prehistory, as current text-books teach that Britain - once a peninsula of continental Europe - split from the great land mass after a long process of erosion and rises in sea levels. However, surveys of...