BBC News - Climate scepticism 'on the rise', BBC poll shows

The findings, based on interviews carried out on 3-4 February, show that only 26% of people think "climate change is happening and is now established as largely man-made", only 1% more than those who think there is no global warming.

In November 2009, a similar poll by Populus - commissioned by the Times newspaper - showed that 41% agreed that climate change was happening and it was largely the result of human activities.

"It is very unusual indeed to see such a dramatic shift in opinion in such a short period," Populus managing director Michael Simmonds told BBC News.

"The British public are sceptical about man's contribution to climate change - and becoming more so," he added.

"More people are now doubters than firm believers."