The GWPF are an organized group of AGW denialists based in the UK. They are fronted by the notorious Benny Peiser, and are known more widely for the fact that one of their money men and spokespeople is Nigel Lawson, dad to the sweet and buxom Nigella.
Earlier this year they were called out, by Bob Ward among others, for being a lobby group and not, as they have always claimed, "an educational charity", as this term is defined by British law.
Earlier this week they basically admitted this charge to be true, and offered to rejig their website so that a part of it would be separated off and proffer the straight-up lies you are allowed to peddle as a lobby group. The other portion, would, presumably, offer misinformation that didn't quite make the straight-up lie standard.