The IPCC was formed by the UN, not the Royal Society and IPCC stands for Intergovernmental Panel on Climate Change. In "Statecraft", Thatcher says:
The doomsters’ favourite subject today is climate change. This has a number of attractions for them. First, the science is extremely obscure so they cannot easily be proved wrong. Second, we all have ideas about the weather: traditionally, the English on first acquaintance talk of little else. Third, since clearly no plan to alter climate could be considered on anything but a global scale, it provides a marvellous excuse for worldwide, supra-national socialism. All this suggests a degree of calculation. Yet perhaps that is to miss half the point. Rather, as it was said of Hamlet that there was method in his madness, so one feels that in the case of some of the gloomier alarmists there is a large amount of madness in their method. --Margaret Thatcher, Statecraft, HarperCollins 2002
Thatcher's comment here can be boiled down to:
1) The science was obscure
2) Everyone talks about the weather
3) The problem could only be considered globally
4) It provides an excuse for socialism.
If anyone here thinks this solidly refutes all the science supporting AGW theory, they're out of their minds.