London traders brace for biggest night since 'Black Wednesday'

London

THE world's biggest banks, including Citi and Goldman Sachs, will draft in senior traders to work through the night following Britain's referendum on EU membership, set to be among the most volatile 24 hours for markets in a quarter of a century.

A vote to leave the European Union on June 23 would spook investors by undermining post-World War II attempts at European integration and placing a question mark over the future of the United Kingdom and its US$2.9 trillion economy.