Four senior ministers today made one of the most embarrassing admissions of the Labour Government's nine years in office - that the official policy for fighting climate change has failed. Yet, as they did so, a group of MPs will offer a different way forward in the struggle to combat global warming, one which they think is the only alternative. It will mean turning established principles of British economic life upside down. It will mean sacrifices from everyone. Therefore, they say, it will have to be taken out of politics.