LONDON (AFP) -- Prime Minister Gordon Brown's approval ratings have hit their lowest level since he took over as premier in June, a Sunday Times/YouGov poll said.

Brown has slumped 40 percentage points in the poll within a month -- in October's poll, 59 percent thought he was doing a good job, while 29 percent said he was doing badly, giving him a 30 percent net approval rating.
But now only 33 percent think he is doing well and 43 percent say he is doing badly, taking his overall figure to minus ten percent.
The statistics come after political opponents branded Brown a ""bottler"" when he pulled back from calling a general election this year and as the strength of the economy has come under question in the aftermath of the crisis at Northern Rock bank.
The poll also reflects the growing strength of the main opposition Conservatives, whose fortunes under leader David Cameron have turned around since Brown decided not to call an election.
The Conservatives have 41 percent of support, compared to 35 percent for Labor.
Pollsters YouGov questioned some 2,000 people for the poll.