The groups believe that the consultation is, "mere window dressing", and that the Government will plough ahead with new nuclear build whatever the outcome of the consultation.
Greenpeace, the Green Alliance, WWF and Friends of the Earth have now joined CND in pulling out of the Government's consultation into nuclear power.
The government had to re-start its nuclear consultation in February, after Greenpeace won a high court ruling from Mr. Justice Sullivan, who said the first consultation was "seriously flawed".
Greenpeace have compiled a dossier of quotes from prominent Government figures, which they say show that the Government's mind is already made up.
According to Greenpeace, Gordon Brown told MPs In July, “we have made the decision to continue with nuclear power," while the consultation was ongoing.
Greenpeace executive director John Sauven said, "This new consultation is a sham and a fraud. It manages somehow to be just as skewed as the last, and seems to have been designed to ignore the views of the public while simultaneously telling people what they should think.
"This government can’t get nuclear power past a fair consultation because the policy is environmentally, financially and scientifically flawed. That’s why ministers have gone for a stitch-up.
“A glance at the consultation document and Gordon Brown’s promise of a new kind of politics looks like a joke. Compared to Blair it’s the same style, different sofa. It’s not too late for ministers to salvage this process and avoid another legal showdown.
But if they won’t listen to the public they might once again be forced to listen to a legal mauling from the High Court," he said.
Last week, Atkins executive board director Ivor Catto last week outlined a case for nuclear power to be cassified as green. "Nuclear power is an environmental technology," he said.