Pre-Budget Report

My understanding of the background to the PBR on this point is that the Treasury wanted to put in credible figures for two or three years ahead to show how all this was going to be paid for before returning to stable policy, but Downing street did not. Is it not the case that more tax increases were originally going to be put in than eventually appeared and that they have been replaced by wholly incredible growth forecasts, supposedly getting us back to 3 per cent. growth by 2012?