The pound is heading for its biggest drop in nearly seven years against the dollar amid uncertainty about a possible British exit from the EU.
At one stage it was down 2.1% at $1.41020, the biggest one-day drop since March 2009.
The
move follows London Mayor Boris Johnson joining the campaign to leave
the EU after Prime Minister David Cameron set a June referendum date.
The steep fall adds to losses made by the pound over recent months.
