World financial markets dived as nearly complete results showed a 51.8/48.2 percent split for leaving. Sterling suffered its biggest one-day fall of more than 10 percent against the dollar, hitting a 31-year low on market fears the decision will hit investment in the world's 5th largest economy.
The vote will initiate at least two years of messy divorce proceedings with the EU, raise questions over London's role as a global financial capital and put huge pressure on Prime Minister David Cameron to resign, though he pledged during the campaign to stay on whatever the result.
