Dimmock's lawyer Paul Downes told the High Court that the Oscar-winning film, "An Inconvenient Truth", contained "serious scientific inaccuracies.

"Given the serious inaccuracies in the film and the misrepresentations it contains, the film is irredeemable," he said.

He added that only half the film related to scientific material, 30 percent was political and the remaining 20 percent was "sentimental mush -- mush there to soften up the viewer for persuasion."

Dimmock, a father of two, believes the government's decision contravenes sections of the Education Act which prohibit the political indoctrination of children, his lawyers have said.

They add that these provisions of the act have never been challenged in court before.

The British government has long been convinced by the scientific arguments that human activity is a major cause of global warming and has led the diplomatic campaign to persuade doubters to agree.

However, while the majority of climate scientists agree on human-induced climate change, there is still some debate in the scientific community about the degree and consequences of global warming, although few reject it outright.