Shares in battered BP plunge 11%

Shares in battered oil giant BP plunged as much as 11% today after hitting a 14-year low in New York trading overnight, amid intensifying political attacks on the group in the United States.

BP shares in London plummeted to levels not seen since 2003 in the sell-off, despite assurances from the firm it was “not aware of any reason” for the sudden slump on Wall Street yesterday.