So many problems with the film. I list a few:
"The Great Global Warming Swindle does not represent the current state of knowledge in climate science… Many of the hypotheses presented in the Great Global Warming Swindle have been considered and rejected by due scientific process. This documentary is far from an objective, critical examination of climate science. Instead the Great Global Warming Swindle goes to great lengths to present outdated, incorrect or ambiguous data in such a way as to grossly distort the true understanding of climate change science, and to support a set of extremely controversial views.[29]"
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en.wikipedia.org]
"Carl Wunsch, professor of Physical Oceanography at MIT, is featured in the Channel 4 version of the programme. Afterwards he said that he was "completely misrepresented" in the film and had been "totally misled" when he agreed to be interviewed.[7][31] He called the film "grossly distorted" and "as close to pure propaganda as anything since World War Two",[32] and he lodged a complaint with Ofcom. He particularly objected to how his interview material was used:"